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The MAX4162/MAX4163/MAX4164 are single/dual/quad, micropower operational amplifiers that combine an exceptional bandwidth to power consumption ratio with true rail-to-rail inputs and outputs. They consume a mere 25μA quiescent current per amplifier, yet achieve 200kHz gain-bandwidth product and are unity-gain stable while driving any capacitive load. The MAX4162/MAX4163/MAX4164 operate from either a single supply (2.5V to 10V) or dual supplies (±1.25V to ±5V), with an input common-mode voltage range that extends 250mV beyond either supply rail. These amplifiers use a proprietary architecture to achieve a very high input common-mode rejection ratio without the midswing nonlinearities present in other rail-to-rail op amps. This architecture also maintains high open-loop gain and output swing while driving substantial loads.
The combination of excellent bandwidth/power performance, single-supply operation, and miniature footprint makes these op amps ideal for portable equipment and other low-power, single-supply applications. The single MAX4162 is available in 8-pin SO and space-saving 5-pin SOT23 packages. The MAX4163 is available in an 8-pin ultra chip-scale package (UCSP™) and an 8-pin μMAX® or SO package. The MAX4164 is available in a 14-pin SO package.
UCSP Package (MAX4163)
1.0pA Typical Input Bias Current
Single-Supply Operation from 2.5V to 10V
Input Common-Mode Voltage Range Extends 250mV Beyond Either Supply Rail
Rail-to-Rail Output Swing
200kHz Gain-Bandwidth Product
25μA Quiescent Current per Amplifier
Excellent CMRR, PSRR, and Gain Linearity
No Phase Reversal for Overdriven Inputs
Unity-Gain Stable
Stable with Any Capacitive Load
Internally Short-Circuit Protected to Either Rail
PART | TEMP RANGE | PIN- PACKAGE | TOP MARK |
MAX4162ESA+ | -40°C to +85°C | 8 SO | — |
MAX4162EUK+ | -40°C to +85°C | 5 SOT23 | AABX |
MAX4163EBL+T* | -40°C to +85°C | 8 UCSP | AAX |
MAX4163ESA+ | -40°C to +85°C | 8 SO | — |
MAX4163EUA+ | -40°C to +85°C | 8 µMAX | — |
MAX4164ESD+ | -40°C to +85°C | 14 SO | — |
Battery-Powered Devices
pH Probes
Portable Equipment
Low-Power, Low-Voltage Equipment
Medical Instruments
Ionization Detectors
Cellular Phones
+Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel.
*UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. Refer to the UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information.
MAX152
+1.2V VREF+ V
R
GND
1/2 MAX4163
VSS
IN-
VOUT
VIN
MAX6120 VOUT
DD
V
VDD
INB-
MAX4163
INA-
B
VSS 2
MAX4162
A OUTA VDD OUTB
5 VDD
TOP VIEW
TOP VIEW (BUMPS SIDE DOWN)
1 2 3
3V
OUT 1
+
IN+
C INA+
VSS INB+
IN-
MICROPOWER 1.2V REFERENCE
VSS
-3V
VOUT
1/2 MAX4163
IN+
VSS
VDD
REF-
-1.2V
R
SOT23
UCSP
Pin Configuration appears at end of data sheet.
4 IN-
IN+ 3
UCSP is a trademark and μMAX is a registered trademark of Maxim Integrated Products, Inc.
19-1195; Rev 4; 8/19
Supply Voltage (VDD to VSS) ................................................ 11V IN+, IN-, OUT Voltage ................... (VDD + 0.3V) to (VSS - 0.3V)
Short-Circuit Duration (to either rail) .........................Continuous
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23 (derate 3.9mW/°C above +70°C) ..........312mW
8-Pin SO (derate 7.4mW/°C above +70°C).................588mW
8-Pin UCSP (derate 4.7mW/°C above +70°C)............379mW
8-Pin μMAX (derate 4.8mW/°C above +70°C) ............387mW
14-Pin SO (derate 12.3mW/°C above +70°C).............987mW Operating Temperature Range........................... -40°C to +85°C
Storage Temperature Range ............................ -65°C to +150°C Junction Temperature ...................................................... +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow, UCSP) ...........................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
(VDD = 3V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RL connected to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
SYMBOL | CONDITIONS | MIN TYP MAX | UNITS | ||
Operating Voltage Range | VDD | Inferred from PSRR test | 2.5 10.0 | V | |
Supply Current (Per Amplifier) | IDD | 25 40 | µA | ||
Input Bias Current (Note 2) | IB | 1.0 100 | pA | ||
Input Offset Voltage | VOS | MAX4162 | TA = +25°C | ±0.5 ±3 | mV |
TA = -40°C to +85°C | ±4 | ||||
MAX4163 | TA = +25°C | ±0.5 ±4 | |||
TA = -40°C to +85°C | ±5 | ||||
MAX4164 | TA = +25°C | ±0.5 ±5 | |||
TA = -40°C to +85°C | ±6 | ||||
Input Offset Voltage Tempco | TCVOS | 2 | µV/°C | ||
Differential Input Resistance | RIN | >10 | TΩ | ||
Input Common-Mode Voltage Range | VCM | Inferred from CMRR test | VSS - VDD + 0.25 0.25 | V | |
Common-Mode Rejection Ratio | CMRR | VCM = (VSS - 0.25V) to (VDD + 0.25V) | 70 100 | dB | |
Large-Signal Voltage Gain | AV | RL = 10kΩ | 85 120 | dB | |
Output Voltage Swing | VOUT | RL = 10kΩ | VDD - VOH | 30 180 | mV |
VOL - VSS | 30 180 | ||||
RL = 100kΩ | VDD - VOH | 3 25 | |||
VOL - VSS | 3 25 | ||||
Output Short-Circuit Current | ISC | To either supply rail | 15 | mA | |
Closed-Loop Output Resistance | ROUT | AV = 1V/V | 0.1 | Ω | |
Power-Supply Rejection Ratio | PSRR | VDD = 2.5V to 10V | 80 110 | dB | |
Gain-Bandwidth Product | GBWP | 200 | kHz | ||
Phase Margin | M | 60 | ° | ||
Gain Margin | GM | 12 | dB | ||
Total Harmonic Distortion | THD | f = 1kHz, VOUT = 2VP-P, RL = 100kΩ, AV = 1V/V | 0.02 | % | |
Slew Rate | SR | 115 | V/ms | ||
Settling Time to 0.1% | VOUT = 1V to 2V step | 50 | µs | ||
Turn-On Time | tON | VDD = 0 to 3V step, VIN = VDD/2, AV = 1V/V | 20 | µs |
(VDD = 3V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RL connected to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS |
Input Voltage-Noise Density | en | f = 1kHz | 80 | nV/√Hz |
Differential Input Capacitance | 0.7 | pF | ||
Input Common-Mode Capacitance | 1.5 | pF | ||
Internal Charge-Pump Frequency | 700 | kHz | ||
Charge-Pump Output Feedthrough | 100 | µVP-P |
(VDD = 5V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RL connected to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
SYMBOL | CONDITIONS | MIN TYP MAX | UNITS | ||
Operating Voltage Range | VDD | Inferred from PSRR test | 4.5 10.0 | V | |
Supply Current (Per Amplifier) | IDD | 25 45 | µA | ||
Input Bias Current (Note 2) | IB | 1.0 100 | pA | ||
Input Offset Voltage | VOS | MAX4162 | TA = +25°C | ±0.5 ±3 | mV |
TA = -40°C to +85°C | ±4 | ||||
MAX4163 | TA = +25°C | ±0.5 ±4 | |||
TA = -40°C to +85°C | ±5 | ||||
MAX4164 | TA = +25°C | ±0.5 ±5 | |||
TA = -40°C to +85°C | ±6 | ||||
Input Offset Voltage Tempco | 2 | µV/°C | |||
Differential Input Resistance | >10 | TΩ | |||
Input Common-Mode Voltage Range | VCM | Inferred from CMRR test | VSS - VDD + 0.25 0.25 | V | |
Common-Mode Rejection Ratio | CMRR | VCM = (VSS - 0.25V) to (VDD + 0.25V) | 70 100 | dB | |
Large-Signal Voltage Gain | AV | RL = 10kΩ | 85 120 | dB | |
Output Voltage Swing | VOUT | RL = 10kΩ | VDD - VOH | 50 300 | mV |
VOL - VSS | 50 300 | ||||
RL = 100kΩ | VDD - VOH | 5 40 | |||
VOL - VSS | 5 40 | ||||
Output Short-Circuit Current | ISC | To either supply rail | 15 | mA | |
Closed-Loop Output Resistance | ROUT | AV = 1V/V | 0.1 | Ω | |
Power-Supply Rejection Ratio | PSRR | VDD = 4.5V to 10V | 80 110 | dB | |
Gain-Bandwidth Product | GBWP | 200 | kHz | ||
Phase Margin | M | 60 | ° | ||
Gain Margin | GM | 12 | dB |
(VDD = 5V, VSS = 0V, VCM = VDD/2, VOUT = VDD/2, RL connected to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS |
Total Harmonic Distortion | THD | f = 1kHz, VOUT = 2VP-P, RL = 100kΩ, AV = 1V/V | 0.02 | % |
Slew Rate | SR | 115 | V/ms | |
Settling Time to 0.1% | VOUT = 1V to 2V step | 70 | µs | |
Turn-On Time | tON | VDD = 0 to 3V step, VIN = VDD/2, AV = 1V/V | 40 | µs |
Input Voltage-Noise Density | en | f = 1kHz | 80 | nV/√Hz |
Differential Input Capacitance | 0.7 | pF | ||
Input Common-Mode Capacitance | 1.5 | pF | ||
Internal Charge-Pump Frequency | 700 | kHz | ||
Charge-Pump Output Feedthrough | 100 | µVP-P |
Note 1: All device specifications are 100% tested at TA = +25°C. Limits over the extended temperature range are guaranteed by design, not production tested.
Note 2: Input bias current guaranteed by design, not production tested.
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4162-01
30
SUPPLY CURRENT (µA)
25
20
15
10
5
0
1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
MAX4162-02
28
26
VCC = 3V
SUPPLY CURRENT (µA)
24 VCC = 5V
22
20
18
16
14
12
10
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
50
30
10
-10
VOS (µV)
-30
-50
-70
-90
-110
-130
-150
INPUT OFFSET VOLTAGE VARIATION vs. SUPPLY VOLTAGE
MAX4162-03
1 2 3 4 5 6 7 8 9 10
SUPPLY VOLTAGE (V)
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
1000
750
500
VOS (µV)
250
0
-250
-500
-750
-1000
130
110
PSRR (dB)
90
70
50
30
10
10,000
OUTPUT IMPEDANCE (Ω)
1000
100
10
1
0.1
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX4162-04
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MAX4162-09
POWER-SUPPLY REJECTION RATIO vs. TEMPERATURE
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4162-12a
AV = 1
6
4
2
0
VOS (mV)
-2
-4
-6
-8
-10
-12
-14
120
COMMON-MODE REJECTION (dB)
110
100
90
80
70
60
50
40
30
20
10
0
COMMON-MODE INPUT CAPACITANCE (pF)
2.00
1.75
1.50
1.25
1.00
INPUT OFFSET VOLTAGE VARIATION vs. COMMON-MODE VOLTAGE
MAX4162-05
-0.5 0.5 1.5 2.5 3.5 4.5 5.5
COMMON-MODE VOLTAGE (V)
MAX4162-10
COMMON-MODE REJECTION vs. TEMPERATURE
VDD = 3V OR 5V
VCM = -0.25V TO VDD + 0.25V
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
COMMON-MODE INPUT CAPACITANCE vs. COMMON-MODE VOLTAGE
130
110
PSRR (dB)
90
70
50
30
10
160
140
OPEN-LOOP GAIN (dB)
120
100
80
60
40
20
0
MAX4162-12b
SHORT-CIRCUIT OUTPUT CURRENT (mA)
40
35
30
25
20
15
10
5
0
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
AV = 1 | ||||||
MAX4162-08
0.1 1 10 100 1k 10k 100k 1M FREQUENCY (Hz)
OPEN-LOOP GAIN vs. TEMPERATURE
MAX4162-11
VDD = 3V OR 5V
RL = 100kΩ
RL = 10kΩ
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MAX4162-13
SHORT-CIRCUIT OUTPUT CURRENT vs. TEMPERATURE
VDD = 3V OR 5V | |||||||
SHORT TO EITHER SUPPLY RAIL | |||||||
0.1 1 10 100 1k 10k 100k 1M
0 1.25
2.50 3.75
5.00
-40 -20 0 20 40 60 80 100
FREQUENCY (Hz)
COMMON-MODE VOLTAGE (V)
TEMPERATURE (°C)
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
MAXIMUM OUTPUT VOLTAGE
300
VDD - VOUT(MAX) (mV)
250
200
150
100
50
0
140
120
VOUT(MIN) (mV)
100
80
60
40
20
0
120
NOISE VOLTAGE DENSITY (nV√Hz)
100
80
60
40
20
0
MAXIMUM OUTPUT VOLTAGE vs. LOAD CURRENT
VD LO
D = 3 AD T
V OR O VD
5V
D/2
MAX4162-14
0 0.4 0.8 1.2 1.6 2.0
LOAD CURRENT (mA)
MINIMUM OUTPUT VOLTAGE vs. TEMPERATURE
MAX4162-17
(VDD = 5V)
VDD = 5V
LOAD TO VDD/2 RL = 5kΩ
RL = 10kΩ
RL = 100kΩ
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MAX4162-20
NOISE VOLTAGE DENSITY vs. COMMON-MODE VOLTAGE
100Hz
1kHz
10kHz
300
250
VOUT(MIN) (mV)
200
150
100
50
0
60
50
VDD - VOUT(MAX) (mV)
40
30
20
10
0
100
NOISE VOLTAGE DENSITY (nV√Hz )
90
80
70
60
50
40
30
20
10
0
MINIMUM OUTPUT VOLTAGE vs. LOAD CURRENT
VD LO
D = 3 AD T
V OR O VD
5V
D/2
MAX4162-15
0 0.4 0.8 1.2 1.6 2.0
LOAD CURRENT (mA)
MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE
MAX4162-18
(VDD = 3V)
VDD = 3V
RL = 5kΩ
LOAD TO VDD/2
RL = 10kΩ
RL = 100kΩ
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
NOISE VOLTAGE DENSITY vs. FREQUENCY
100
90
80
VDD - VOUT(MAX) (mV)
70
60
50
40
30
20
10
0
90
80
70
VOUT(MIN) (mV)
60
50
40
30
20
10
0
MAX4162-21a
1
THD + N (%)
0.1
0.01
0.001
vs. TEMPERATURE (VDD = 5V)
VDD = 5V
LOAD TO VDD/2
MAX4162-16
RL = 5kΩ
RL = 10kΩ
RL = 100kΩ
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MINIMUM OUTPUT VOLTAGE vs. TEMPERATURE
VDD = 3V
LOAD TO VDD/2
MAX4162-19
(VDD = 3V)
RL = 5kΩ
RL = 10kΩ
RL = 100kΩ
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MAX4162-21b
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
AV = 1
RL = 100kΩ
VP-P = 4.99V
VP-P = 1V
-0.5 0.5 1.5 2.5 3.5 4.5 5.5
10 100 1k 10k
100k 1M
10 100
1k 10k
COMMON-MODE VOLTAGE (V)
FREQUENCY (Hz)
FREQUENCY (Hz)
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT VOLTAGE SWING
MAX4162-21c
1
AV = 1
RL = 100kΩ
GAIN AND PHASE vs. FREQUENCY (CL = 0)
R | L = | 10 | 0k | Ω | ||||||||||
C A | L = V | 0 = 10 | 00 | |||||||||||
G | AI | N | ||||||||||||
PH | AS | E | ||||||||||||
60 MAX4162-22
180
144
THD + N (%)
0.1
0.01
60
40
GAIN (dB)
20
0
-20
-40
f = 5kHz
f = 1kHz
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
PEAK-TO-PEAK OUTPUT VOLTAGE SWING (V)
GAIN AND PHASE vs. FREQUENCY (CL = 500pF)
MAX4162-23
RL = 100kΩ CL = 500pF AV = 1000
GAIN
PHASE
1 100 1k 10k 100k 1M FREQUENCY (Hz)
NONINVERTING
SMALL-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 0)
MAX4162-25
180
144
108
72
36
0
-36
-72
-108
-144
-180
40
GAIN (dB)
20
0
-20
-40
60
PHASE (degrees)
40
GAIN (dB)
20
0
-20
-40
1 100 1k 10k 100k 1M FREQUENCY (Hz)
GAIN AND PHASE vs. FREQUENCY (CL = 0.01µF)
MAX4162-24
AIN
G
RL = 100kΩ CL = 0.01µF AV = 1000
PH
AS
E
1 100 1k 10k 100k 1M FREQUENCY (Hz)
NONINVERTING
SMALL-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 1500pF)
MAX4162-26
108
PHASE (degrees)
72
36
0
-36
-72
-108
-144
-180
180
144
108
PHASE (degrees)
72
36
0
-36
-72
-108
-144
-180
IN
50mV/div
OUT
50mV/div
IN
50mV/div
OUT
50mV/div
100µs/div
VDD = 3V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 0
100µs/div
VDD = 3V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 1500pF
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
NONINVERTING
SMALL-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 0)
MAX4162-27
NONINVERTING
SMALL-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 1500pF)
MAX4162-28
NONINVERTING
LARGE-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 0)
MAX4162-29
IN
50mV/div
OUT
50mV/div
IN
50mV/div
OUT
50mV/div
IN
1V/div
OUT
1V/div
100µs/div
VDD = 5V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 0
100µs/div
VDD = 5V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 1500pF
100µs/div
VDD = 3V, VIN = 2V, RL = 100kΩ to VDD/2, CL = 0
NONINVERTING
LARGE-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 1500pF)
MAX4162-30
NONINVERTING
LARGE-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 0)
MAX4162-31
IN
1V/div
OUT
1V/div
IN
2V/div
OUT
2V/div
100µs/div
VDD = 3V, VIN = 2V, RL = 100kΩ to VDD/2, CL = 1500pF
100µs/div
VDD = 5V, VIN = 4V, RL = 100kΩ to VDD/2, CL = 0
(VDD = 5V, VSS = 0V, VCM = VDD/2, TA = +25°C, unless otherwise noted.)
IN
2V/div
OUT
2V/div
NONINVERTING
LARGE-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 1500pF)
MAX4162-32
100µs/div
0
-20
CROSSTALK (dB)
-40
-60
-80
-100
-120
-140
-160
MAX4163/MAX4164 CROSSTALK vs. FREQUENCY
MAX4162-33
0.1 1 10 100 1000
VDD = 5V, VIN = 4V, RL = 100kΩ to VDD/2, CL = 1500pF
FREQUENCY (kHz)
PIN | NAME | FUNCTION | ||||
MAX4162 | MAX4163 | MAX4164 | ||||
SO | SOT23 | SO/µMAX | UCSP | SO | ||
1, 5, 8 | – | – | – | – | N.C. | No Connection. Not internally connected. |
2 | 4 | – | – | – | IN- | Amplifier Inverting Input |
3 | 3 | – | – | – | IN+ | Amplifier Noninverting Input |
4 | 2 | 4 | C2 | 11 | VSS | Negative Power Supply |
6 | 1 | – | – | – | OUT | Amplifier Output |
7 | 5 | 8 | A2 | 4 | VDD | Positive Power Supply |
– | – | 1 | A1 | 1 | OUTA | Amplifier A Output |
– | – | 2 | B1 | 2 | INA- | Amplifier A Inverting Input |
– | – | 3 | C1 | 3 | INA+ | Amplifier A Noninverting Input |
– | – | 5 | C3 | 5 | INB+ | Amplifier B Noninverting Input |
– | – | 6 | B3 | 6 | INB- | Amplifier B Inverting |
– | – | 7 | A3 | 7 | OUTB | Amplifier B Output |
– | – | – | – | 8 | OUTC | Amplifier C Output |
– | – | – | – | 9 | INC- | Amplifier C Inverting Input |
– | – | – | – | 10 | INC+ | Amplifier C Noninverting Input |
– | – | – | – | 12 | IND+ | Amplifier D Noninverting Input |
– | – | – | – | 13 | IND- | Amplifier D Inverting Input |
– | – | – | – | 14 | OUTD | Amplifier D Output |
a)
RAIL-TO-RAIL INPUT/OUTPUT VOLTAGE RANGE
(VDD = 3V)
MAX4162-35
b)
RAIL-TO-RAIL INPUT/OUTPUT VOLTAGE RANGE
(VDD = 2V)
MAX4162-34
IN
1V/div
3V
2V
0
3V 2V
OUT
1V/div
OUT
0.667V/div
0
200µs/div 200µs/div
VDD = 3V, VP-P = 3V, f = 1kHz, RL = 10kΩ VDD = 2V, VP-P = 2V, f = 1kHz, RL = 10kΩ
0
0
IN
0.667V/div
Figure 1. Rail-to-Rail I/O: a) VDD = 3V; b) VDD = 2V
LARGE CAPACITIVE-LOAD DRIVE
MAX4162-36
500mV
IN
200mV/div
0
500mV
OUT
200mV/div
0
5µs/div AV = 1, CL = 1µF, RL = 100kΩ
Insert caption here and position to the layout.
Rail-to-Rail Inputs and Outputs
The MAX4162/MAX4163/MAX4164 input common-mode range extends 250mV beyond each of the supply rails, providing a substantial increase in dynamic range over other op amps (even many of those referred to as rail-to- rail). Although the minimum operating voltage is specified at 2.5V, the devices typically provide full rail-to-rail operation below 2.0V (Figure 1). These amplifiers do not suffer from midswing common-mode-rejection degradation or cross- over nonlinearity often encountered in other rail-to-rail
op amps. Extremely low, 1.0pA input bias current makes these devices ideal for applications such as pH probes, electrometers, and ionization detectors. They are also protected against phase reversal (inferred from CMRR test) and latchup for input signals extending beyond the supply rails. The output stage achieves a lower output impedance than traditional rail-to-rail output stages, providing an output voltage range that typically swings within 150mV of the supply rails for 1mA loads. This architecture also maintains high open-loop gain and output swing while driving substantial loads.
Output Loading and Stability
These devices drive 1mA loads to within 150mV of the supply rails while consuming only 25μA of quiescent current. Internal compensation allows these amplifiers to remain unity-gain stable while driving any capacitive load (Figure 2).
Internal Charge Pump
An internal charge pump provides two internal supplies typically 2V beyond each rail. These internal rails allow the MAX4162/MAX4163/MAX4164 to achieve true rail-to- rail inputs and outputs, while providing excellent common- mode rejection, power-supply rejection ratios, and gain linearity.
These charge pumps require no external components, and in most applications are entirely transparent to the user. Two characteristics may be visible to the user, depending on the application:
The on-board charge pumps generate a small amount of 700kHz switching noise at the op amp’s output. The amplitude of this noise is typically 100μVP-P. The noise is not referred to the input, and is independent of amplifier gain. The charge-pump switching frequency is well beyond the amplifier’s 200kHz bandwidth, and is therefore unnoticeable in most applications.
The charge pumps typically require up to 20μs on power-up to fully energize the internal supply rails (Figure 3).
Power Supplies and Layout
The MAX4162/MAX4163/MAX4164 are guaranteed to operate from a single 2.5V to 10.0V power supply, but full rail-to-rail operation typically extends below 2V. For single-supply operation, bypass the power supply with a 1μF capacitor in parallel with a 0.1μF ceramic capacitor. If operating from dual supplies, bypass each supply to ground.
Good layout improves performance by decreasing the amount of stray capacitance at the op amp’s inputs and output. To decrease stray capacitance, minimize both trace and external component lead lengths, and place external components close to the op amp’s pins.
UCSP Package Consideration
For general UCSP package information and PC layout considerations, please refer to the Maxim Application Note (Wafer-Level Ultra-Chip-Board-Scale-Package).
The UCSP represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP. Performance through operating life test and moisture resistance remains uncompromised as it is primarily determined by the wafer-fabrication process. Mechanical stress performance is a greater consideration for a UCSP package. UCSPs are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be considered.
TEST | CONDITIONS | DURATION | NO. OF FAILURES PER SAMPLE SIZE |
Temperature Cycle | -35°C to +85°C, -40°C to +100°C | 150 cycles, 900 cycles | 0/10, 0/200 |
Operating Life | TA = +70°C | 240h | 0/10 |
Moisture Resistance | -20°C to +60°C, 90% RH | 240h | 0/10 |
Low-Temperature Storage | -20°C | 240h | 0/10 |
Low-Temperature Operational | -10°C | 24h | 0/10 |
Solderability | 8h steam age | — | 0/15 |
ESD | ±2000V, Human Body Model | — | 0/5 |
High-Temperature Operating Life | TJ = +150°C | 168h | 0/45 |
a)
POWER-UP TRANSIENT (VDD = 3V)
b)
3V
5V
IN
1.5V/div
IN
2V/div
0
0
1.5V
2.5V
OUT
750mV/div
OUT
1V/div
0
0
100µs/div
VDD = 3V, VIN = VDD/2, RL = 10kΩ, CL = 1500pF
100µs/div
VDD = 5V, VIN = VDD/2, RL = 10kΩ, CL = 1500pF
MAX4162-39
MAX4162-38
POWER-UP TRANSIENT (VDD = 5V)
Figure 3. Power-Up Transient: a) VDD = 3V; b) VDD = 5V
+ + +
TOP VIEW
N.C.
N.C.
OUTA
VDD
OUTA
OUTD
1
IN- 2
IN+ 3
VSS 4
MAX4162
SO
8
7 VDD
6 OUT
5 N.C.
1
INA- 2
INA+ 3
VSS 4
MAX4163
SO/µMAX
8 1 14
INA- INA+ VDD | 2 3 4 | MAX4164 | 13 12 11 | IND- IND+ V |
INB+ | 5 | 10 | INC+ | |
INB- | 6 | 9 | INC- | |
OUTB | 7 | 8 | OUTC | |
SO |
7 OUTB
6 INB-
SS
5 INB+
PROCESS: BiCMOS
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE | PACKAGE CODE | DOCUMENT NO. |
8 SO | S8-2, S8-4 | |
5 SOT23 | U5-1 | |
8 UCSP | B9-5 | |
8 µMAX | U8-1 | |
14 SO | S14M-5 |
REVISION NUMBER | REVISION DATE | DESCRIPTION | PAGES CHANGED |
2 | 5/09 | Changed operating supply voltage from 2.7V to 2.5V | 1, 2, 3, 10, 11 |
3 | 1/10 | Updated PSRR condition for 5V operation, added lead-free designation to Ordering Information, and added UCSP soldering temperature | 1–9, 12 |
4 | 8/19 | Updated Pin Configurations | 1 |
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
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