Micropower Rail-to-Rail Op Amp and Reference
U
FEATURES DESCRIPTIO
Industrial Temperature Range SO-8 Packages
Rail-to-Rail Output
High Output Current: 20mA Min
Output Drives 1000pF
Capable of Floating Mode Operation
Specified for 5V and 5V Supplies
Low Reference Drift: 30ppm/C
Industry Standard LM10 Pinout
APPLICATIO S
Battery- or Solar-Powered Systems Portable Instrumentation
Sensor Conditioning
Precision Current Regulators
Precision Voltage Regulators
Battery Level Indicator
Thermocouple Transmitter
The LT®1635 is a new analog building block that includes a rail-to-rail output op amp, a precision reference and reference buffer. The device operates from supplies as low as a single 1.2V or up to 5V, yet it consumes only 130A of supply current.
The input common mode range of the op amp includes ground and incorporates phase reversal protection to pre- vent false outputs from occurring when the input is below the negative supply. The rail-to-rail output stage can swing to within 15mV of each rail with no load and can swing to within 250mV of each rail while delivering 10mA of output current. The gain bandwidth of the op amp is 175kHz and it is unity- gain stable with up to 1000pF load capacitance.
The 0.2V reference is referred to V– and includes a buffer amplifier to enhance flexibility. The reference and buffer combine to achieve a drift of 30ppm/C, a line regulation of 20ppm/ V and a load regulation of 150ppm/mA.
The LT1635 is available in 8-pin PDIP and SO packages, and has the industry standard LM10 pinout.
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
C1 0.01F
R1 100k
25
PERCENT OF UNITS
VS = 5V, 0V | |||||||||
TA = 25 | C | ||||||||
VIN > 5.2V 20
15
2
3
R2 3.9k
VOUT
ADJ
7
LT1635
8
1
R3
5k
6 VOUT
4 0V TO 5V
10
5
0
– 1.0 – 0.6 – 0.2 0.2
0.6
1.0
1635 TA01
INPUT OFFSET VOLTAGE (mV)
1635 TA02
Total Supply Voltage (V + to V–) .............................. 14V
Input Differential Voltage ......................................... 14V
Input Current ...................................................... 25mA
Output Short-Circuit Duration ....................... Continuous Operating Temperature Range
(Note 2) .............................................. – 40C to 85C
Junction Temperature ........................................... 150C
Storage Temperature Range ................. – 65C to 150C
Lead Temperature (Soldering, 10 sec).................. 300C
TOP VIEW REFOUT 1 – 8 REF FB OP AMP IN (–) 2 + 7 V+ OP AMP IN (+) 3 + 6 OP AMP OUT V– 4 5 BALANCE N8 PACKAGE S8 PACKAGE 8-LEAD PDIP 8-LEAD PLASTIC SO TJMAX = 150C, JA = 130C/ W (N8) TJMAX = 150C, JA = 190C/ W (S8) | ORDER PART NUMBER |
LT1635CN8 LT1635CS8 LT1635IN8 LT1635IS8 | |
S8 PART MARKING | |
1635 1635I |
Consult LTC Marketing for parts specified with wider operating temperature ranges.
VOS Input Offset Voltage 0.3 1.3 mV
0C TA 70C ● 0.5 1.6 mV
– 40C TA 85C ● 1.8 mV
Input Offset Voltage Drift – 40C TA 85C (Note 4) ● 3.0 7.0 V/C VOS ADJ Offset Voltage Adjust Range Positive Adjust ● 6 8 mV
Negative Adjust ● – 1.4 – 2 mV
IOS Input Offset Current ● 0.2 0.6 nA
IB Input Bias Current 2.0 4.5 nA
2.5 5.5 nA
Input Noise Voltage 0.1Hz to 10Hz 1 VP-P
en Input Noise Voltage Density f = 1kHz 50 nV/Hz
in Input Noise Current Density f = 1kHz 0.05 pA/Hz
RIN Input Resistance Differential ● 7 25 M Common Mode, VCM = 0V to 4V 6 G
Input Voltage Range ● 0 4 V
CMRR Common Mode Rejection Ratio VCM = 0V to 4V 92 110 dB
85 97 dB
AVOL Large-Signal Voltage Gain VO = 200mV to 4.5V, No Load ● 100 450 V/mV
VO = 200mV to 4.5V, RL = 1.1k ● 45 200 V/mV
VO = 200mV to 4.5V, RL = 500 ● 35 150 V/mV
Shunt Gain IOUT = 0.1mA to 5mA V/mV
VO = 1.5V to 6.45V 15 25 V/mV
(Note 5) ● 8 20 V/mV
VOL Output Voltage Swing Low VS = 5V, No Load ● 2 10 mV
VS = 5V, ISINK = 5mA ● 125 250 mV
VS = 5V, ISINK = 10mA ● 200 500 mV
VOH Output Voltage Swing High VS = 5V, No Load ● 4.975 4.985 V
VS = 5V, ISOURCE = 5mA ● 4.65 4.8 V
VS = 5V, ISOURCE = 10mA ● 4.55 4.75 V
SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNITS | |
ISC | Short-Circuit Current | VS = 5V, Short to GND VS = 5V, Short to VCC | ● ● | 20 20 | 40 40 | mA mA | |
PSRR | Power Supply Rejection Ratio | VS = 1.2V to 12V, VCM = VO = 0.2V | ● | 93 90 | 100 97 | dB dB | |
Minimum Operating Supply Voltage | (Note 3) | ● | 1.1 | 1.2 | V | ||
IS | Supply Current | ● | 130 150 | 200 260 | A A | ||
GBW | Gain Bandwidth Product | f = 1kHz | 175 | kHz | |||
SR | Slew Rate | AV = – 1, RL = | 0.045 | V/s |
SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNITS | |
VREF | Feedback Sense Voltage | Voltage at Pin 1 with Pin 1 Connected to Pin 8 (Note 6) | ● | 189 | 200 | 211 | mV |
TC VREF | Reference Drift | (Note 4) | ● | 30 | 100 | ppm/C | |
Feedback Current | Current into Pin 8 | ● | 3.5 5.0 | 10 15 | nA nA | ||
Line Regulation | 0 IREF 1mA, VREF = 200mV VS = 1.2V to 5V VS = 1.3V to 5V (Note 3) | ● | 20 30 | 100 200 | ppm/V ppm/V | ||
Load Regulation | IREF = 0 to 1mA | ● | 150 200 | 300 500 | ppm/mA ppm/mA | ||
Reference Amplifier Gain | VO = 0.2V to 3.5V | ● | 45 25 | 90 50 | V/mV V/mV |
SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNITS | |
VOS | Input Offset Voltage | 0C TA 70C – 40C TA 85C | ● ● | 0.3 0.5 | 1.5 1.9 2.1 | mV mV mV | |
Input Offset Voltage Drift | 0C TA 85C (Note 4) | ● | 4.5 | 10.0 | V/C | ||
VOS ADJ | Offset Voltage Adjust Range | Positive Adjust Negative Adjust | ● ● | 6 – 1.4 | 8 – 2 | mV mV | |
IOS | Input Offset Current | ● | 0.2 | 0.6 | nA | ||
IB | Input Bias Current | ● | 2.0 2.5 | 4.5 5.5 | nA nA | ||
Input Noise Voltage | 0.1Hz to 10Hz | 1 | VP-P | ||||
en | Input Noise Voltage Density | f = 1kHz | 50 | nV/Hz | |||
in | Input Noise Current Density | f = 1kHz | 0.05 | pA/Hz | |||
RIN | Input Resistance | Differential Common Mode, VCM = – 5V to 4V | ● | 7 | 35 9 | M G | |
Input Voltage Range | ● | –5 | 4 | V | |||
CMRR | Common Mode Rejection Ratio | VCM = – 5V to 4V | ● | 94 91 | 115 110 | dB dB |
SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNITS | |
AVOL | Large-Signal Voltage Gain | VO = – 4.5V to 4.5V, No Load VO = – 4.5V to 4.5V, RL = 1.1k VO = – 4.5V to 4.5V, RL = 500 | ● ● ● | 175 15 10 | 300 100 60 | V/mV V/mV V/mV | |
VO | Output Voltage Swing | VS = 5V, No Load VS = 5V, ISINK = 5mA VS = 5V, ISINK = 10mA | ● ● ● | 4.975 4.65 4.5 | 4.985 4.75 4.6 | mV mV mV | |
ISC | Short-Circuit Current | VS = 5V | 20 | 40 | mA | ||
PSRR | Power Supply Rejection Ratio | VS = 1V to 6V, VCM = VO = 0V | ● | 90 88 | 100 98 | dB dB | |
IS | Supply Current | ● | 135 160 | 215 280 | A A | ||
GBW | Gain Bandwidth Product | f = 1kHz | 175 | kHz | |||
SR | Slew Rate | AV = –1, RL = | 0.05 | V/s |
SYMBOL | PARAMETER | CONDITIONS | MIN | TYP | MAX | UNITS | |
VREF | Feedback Sense Voltage | Voltage at Pin 1 with Pin 1 Connected to Pin 8 (Note 6) | ● | 189 | 200 | 211 | mV |
TC VREF | Reference Drift | (Note 4) | ● | 40 | 120 | ppm/C | |
Feedback Current | Current into Pin 8 | ● | 3.5 5.0 | 10 15 | nA nA | ||
Line Regulation | 0 IREF 1mA, VREF = 200mV VS = 0.6V to 5V VS = 0.65V to 5V (Note 3) | ● | 20 30 | 100 200 | ppm/V ppm/V | ||
Load Regulation | IREF = 0 to 1mA | ● | 150 200 | 300 500 | ppm/mA ppm/mA | ||
Reference Amplifier Gain | VO = 0.2V to 8.5V VS = 10V, 0V | ● | 45 25 | 90 50 | V/mV V/mV |
Note 2: The LT1635C is guaranteed to operate over the commercial temperature range of 0C to 70C. It is designed, characterized and expected to meet these extended temperature limits, but is not tested at
– 40C and 85C. The LT1635I is guaranteed to meet the industrial temperature range.
Note 5: Shunt gain defines the operation in floating applications when the output is connected to the V+ terminal and input common mode is referred to V –.
220
200
SUPPLY CURRENT (A)
180
160
TA = – 55C
100
OFFSET CURRENT (pA)
50
0
0
VS = 5V, 0V
INPUT BIAS CURRENT (nA)
–1 TA = 125C
TA = 25C
–2
140
120
TA = 25C
BIAS CURRENT (nA)
–1
TA = – 55C
–3
100
80
60
TA = 125C –2 4
VS = 5V, 0V | ||||||||
IOS | ||||||||
IB | ||||||||
–3 –5
2 3 4 5 6 7
8 9 10
–50
–25 0
25 50 75
100 125
–1 0 1 2 3 4
SUPPLY VOLTAGE (V)
1635 G01
TEMPERATURE (C)
1635 G02
COMMON MODE VOLTAGE (V)
1635 G03
VS = 2.5V TA = 25C
INPUT NOISE VOLTAGE DENSITY (nV/Hz)
80
70
60
50
40
0.5
INPUT NOISE CURRENT DENSITY (pA/Hz)
0.4
0.3
0.2
0.1
VS = 2.5V TA = 25C
0 1 2 3 4
5 6 7
30
NOISE VOLTAGE (1V/DIV)
VS = 5V TA = 25C | |||||||||
8 9 10 1
0
10 100 1000 1
10 100 1000
TIME (SEC)
1635 G04
FREQUENCY (Hz)
1635 G05
FREQUENCY (Hz)
1635 G06
25
VS = 5V, 0V
PERCENT OF UNITS
20
15
200
CHANGE IN INPUT OFFSET VOLTAGE (V)
0
– 200
– 400
TA = 125C
140
CHANGE IN OFFSET VOLTAGE (V)
120
100
80
10
– 600
60
VS = 5V TA = 25C |
TA = 25C
40
5
0
–6 –4 –2 0 2 4 6
– 800
–1000
0
TA = – 55C
1 2
20
0
0 1 2 3
4 5 6
7 8 9 10
TCVOS (V/C)
1635 G07
TOTAL SUPPLY VOLTAGE (V)
1635 G08
TIME AFTER POWER ON (MINUTES)
1635 G09
120
60
VS
50
= 2.5V
100
60
VS = 5V
RL =
100
VOLTAGE GAIN (dB)
80
PHASE MARGIN
VOLTAGE GAIN (dB)
40
30 70
TA = 25C
PHASE
120
PHASE SHIFT (DEG)
140
160
50 TA = 25C
AV = 5
OVERSHOOT (%)
40
60
40
20
0
–20
20
10
0
–10
–20
–30
GAIN
180
30
200
220 20
240
10
260
280 0
AV = 10 AV = 1
VS = 2.5V TA = 25C | ||||||||
0.01
0.1 1
10 100 1k
10k 100k 1M 10
100 1000
10 100 1000 10000
FREQUENCY (Hz)
1635 G10
FREQUENCY (kHz)
1635 G11
CAPACITIVE LOAD (pF)
1635 G12
0.10
0.09
SLEW RATE (V/s)
0.08
0.07
0.06
0.05
350
GAIN-BANDWIDTH PRODUCT (kHz)
300
250
200
150
75
VS = 2.5V
70
PHASE MARGIN
65
60
GAIN-BANDWIDTH
UCT
PROD 55
1M
VS = 5V, 0V
PHASE MARGIN (DEG)
VOLTAGE GAIN (V/V)
TA = – 55C
TA = 25C
TA = 125C
VS = 5V | ||||||
FALLING SLEW RATE | ||||||
RISING SLEW RATE | ||||||
0.04
–50
–25 0
25 50
75 100 125
100
–50 –25 0
25 50 75
50
100 125
100k
0.1 1
10 100
1000
TEMPERATURE (C)
1635 G13
TEMPERATURE (C)
1635 G14
LOAD RESISTANCE TO GROUND (k)
1635 G15
0.5
TA = 25C
INPUT VOLTAGE CHANGE (mV)
0.4
0.3
0.2
+
VIN
–
0V
IOUT = 20mA
2V/DIV
1V/DIV
+
VOUT 0V
IOUT
0.1
–
IOUT = 1mA
AV = 1, NO LOAD
200s/DIV
1635 G17
100s/DIV
AV = 1, NO LOAD
1635 G18
0
0 1 2
3 4 5
6 7 8
INPUT 8VP-P
INPUT PULSE 0V TO 4V
OUTPUT VOLTAGE (V)
1635 G16
VS = 2.5V, NO LOAD TA = 25C | |||||
OUTPUT HIGH | |||||
OUTPUT LOW | |||||
16 1000
VS
OUTPUT SATURATION VOLTAGE (mV)
OUTPUT SATURATION VOLTAGE (mV)
V
= 2.5V
= 30mV
1
OUTPUT SATURATION VOLTAGE (V)
VS = 2.5V V = 30mV
14 OD
12
OD
TA = 25C
100
10
8
6 10
4
2
0 1
TA = 125C
TA = – 55C
0.1
0.01
TA = 25C TA = 125C
TA = – 55C
0 5 10
15 20
25 30
0.001
0.01
0.1 1 10
0.001
0.01
0.1 1 10
INPUT OVERDRIVE (mV)
1635 G19
SINKING LOAD CURRENT (mA)
1635 G20
SOURCING LOAD CURRENT (mA)
1635 G21
COMMON MODE RANGE (V)
V+ V+ – 0.5 V+ – 1
V –
V – – 0.5
COMMON MODE REJECTION RATIO (dB)
120
100
80
60
40
20
VS = 2.5V TA = 25C
POWER SUPPLY REJECTION RATIO (dB)
120
100
80
60
40
20
V – – 1
–50
–25 0
25 50
75 100 125
0
1 10 100 1k 10k
100k
0
VS = 2.5V TA = 25C | |||||
POSITIVE SUPPLY | |||||
NEGATIVE SUPPLY | |||||
0.1
1 10 100 1k
10k 100k
TEMPERATURE (C)
1635 G22
FREQUENCY (Hz)
1635 G23
FREQUENCY (Hz)
1635 G24
10000
OUTPUT IMPEDANCE ()
1000
100
VS = 2.5V TA = 25C
AV = 100
AV = 10 AV = 1
10mV/DIV
10mV/DIV
0V
10
AV = 1
1 CL = 15pF
50s/DIV
1635 G26
AV = 1
CL = 15pF
50s/DIV
1635 G27
0.1 1
10 100 1000
FREQUENCY (kHz)
INPUT 50mV TO 100mV
1635 G25
VS = 5V, 0V | |||||||||||
TA | = 25C | ||||||||||
20
18
16
PERCENT OF UNITS
14
12
10
8
6
4
2
0
208
207
REFERENCE OUTPUT (mV)
206
205
204
203
202
201
200
VS = 5V, 0V
TA = – 55C
TA = 125C
TA = 25C
200
REFERENCE CHANGE (ppm)
0
– 200
– 400
– 600
VS = 5V, 0V TA = 25C | ||||||||
194
196 198 200 202
204
206
0 2 4
6 8 10 12 14
0 1 2 3 4
REFERENCE VOLTAGE (mV)
1635 G28
SUPPLY VOLTAGE (V)
1635 G29
SOURCING CURRENT (mA)
1635 G30
205
REFERENCE OUTPUT (mV)
204
203
202
201
VS = 5V
1.5
OUTPUT SATURATION VOLTAGE (V)
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
VS = 5V, 0V | |||||
TA = – 55C | |||||
TA = 25C | |||||
TA = 125C | |||||
120
100
80
GAIN (dB)
60
40
20
0
–20
–40
VS = 5V, 0V | ||||||
TA = 25C
–50
–25
0 25 50
75 100
125
0 1 2 3
1 10 100
1k 10k
100k 1M 10M
TEMPERATURE (C)
1635 G31
SOURCING CURRENT (mA)
1635 G32
FREQUENCY (Hz)
1635 G33
BALANCE 2 5
OUTPUT
6
REFERENCE
FEEDBACK V+
8 7
INPUTS
3
OP AMP
200mV +
REFERENCE
REF AMP
1 REFERENCE
OUTPUT
4 1635 BD
V–
The LT1635 is fully specified with V+ = 5V, V– = 0V and VCM = 2.5V. The op amp offset voltage is internally trimmed to a minimum value at these supply voltages. A unique feature of this device is that it operates from a single 1.2V supply up to 5V. A full set of specifications is provided at 5V supply voltages. The positive supply pin of the LT1635 should be bypassed with a small capacitor (about 0.1F), as well as the negative supply pin when
should be taken to keep the output from saturating. For example, a 1mV input signal will cause the amplifier to set up in its linear region in the gain 100 configuration as shown in Figure 2a. However, 1mV is not enough to make the amplifier function properly in the voltage follower mode (Figure 2b).
99R
using split supplies.
The LT1635 is fully specified for single supply operation, i.e., when the negative supply is 0V. Input common mode
R
1mV
5V
LT1635 OP AMP
100mV
1mV
5V
LT1635 OP AMP
OUTPUT SATURATED
2mV
1635 F02
range of the op amp includes ground and the output swings within a few millivolts of ground while sinking current. The input stage of the op amp incorporates phase reversal protection to prevent false outputs from occur- ring when the input is below the negative supply. Protec- tive resistors have been included in the input leads so that current does not become excessive when the inputs are forced below the negative supply.
The op amp also includes an offset nulling feature, this is accomplished by connecting the BALANCE pin (Pin 5) to a variable voltage derived from the reference output. The offset adjust range is asymmetrical, typically – 2mV to 8mV. At room temperature the input offset voltage of the LT1635 is within the null range, thus the offset voltage can be adjusted to zero. Figure 1 shows the standard offset adjustment.
V+
2 4
LT1635 6
3
(a) (b)
There are two main contributors of distortion in op amps: distortion caused by nonlinear common mode rejection and output crossover distortion as the output transitions from sourcing to sinking current. The common mode rejection ratio of the LT1635 is very good, typically 110dB. Therefore, as long as the input operates in normal com- mon mode range, there will be very little common mode induced distortion. Crossover distortion will increase as the output load resistance decreases. For the lowest dis- tortion, the LT1635 should be operated with the output always sourcing current.
The reference of the LT1635 consists of a 200mV precision bandgap and a reference amplifier. As shown in the block
1 8
5
R1
10k
VREF
V– 1635 F01
diagram, the 0.2V precision bandgap is referred to V– and
is internally connected to the noninverting input of the ref- erence amplifier. This configuration offers great flexibility in that the reference voltage can be amplified or the reference amplifier can be used as a comparator. Unlike the op amp,
the output of the reference amplifier can only swing within 0.8V (typ) of the positive rail. To guarantee that the reference amplifier does not saturate over the industrial temperature
The output voltage swing of the LT1635 is a function of input overdrive as shown in the typical performance curves. When monitoring voltages within 15mV of either rail, gain
range, the minimum operating supply should be 1.3V. The reference amplifier can source 2mA of load current and can sink 10A over the industrial temperature range.
C1 0.01F
VIN > 6V
R1
28k
2
R2 3
2k
VIN > 3.2V
7
LT1635 6
4
8 +
1
VOUT 3V
OPTIONAL*
2
3
R2
48k
7
LT1635 6
4
8
1
R1
2k
VOUT 5V
*USE ELECTROLYTIC OUTPUT CAPACITORS
1635 TA03
1635 TA04
2 7
LT1635
+
IOUT
6
= (R2 + R3)VREF (R1)(R3)
C1* 0.01F
R2
+ V =
R2V
3 4
1
R1 8
R2 R3 –
1635 TA05
2 7
LT1635 6
3 4
R1 1
8
OUT
–
1 + R1
REF
*REQUIRED FOR CAPACITIVE LOADING
1635 TA06
R2 2 7
+ C1
47F
GROUND
R1 680k
R3 680k
+
R4 1.5k
49.9k
1%
Q1 2N3904
LT1635 6
3 4
8
1
R1
2k
ELECT
VOUT
–5V
R2
12k
2 7 D1
LT1635 6
3 4
8
1
–
1% VIN – 5.5V
1635 TA07
LED DIMS BELOW 7V
1635 TA08
7 V+
C2
R1
6k
Q1
INPUTS R2
6k
Q2
Q13
Q15
Q20
Q21
Q19
Q26
Q27
Q28
6
OUTPUT
Q4 Q7 Q17 Q18
300k
5
Q3 Q5 Q6
Q14
Q16
Q24
Q25
BALANCE
V–
+
1635 SSOA
C1
V+ 7
16
1
REF FB 8
1 REFOUT
V– 4
1635 SSREF
(Reference LTC DWG # 05-08-1510)
(10.160) MAX | |||||||||
8 | 7 | 6 | 5 | ||||||
5 0.015* 77 0.381) | |||||||||
1 | 2 | 3 | 4 |
0.400*
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
0.130 0.005
(3.302 0.127)
0.009 – 0.015
(0.229 – 0.381)
0.065
(1.651)
TYP
0.125
0.25
(6.4
0.325
+0.035
8.255
–0.015
+0.889
–0.381
0.100 (2.54)
BSC
(3.175) MIN
0.018 0.003
(0.457 0.076)
0.020
(0.508) MIN
N8 1098
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
11
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
100nF
1M
2A
3 + 7 220
1A SOLAR ARRAY
200mV
8
+
LT1635 REF
–
7V
LT1635 6
OP AMP
– 4 TIP121
68k
1M
7.5*
2k
10W
12V
5A GELCEL
*DALE HLM-10 1635 TA09
(Reference LTC DWG # 05-08-1610)
0.010 – 0.020 45
(0.254 – 0.508)
0.008 – 0.010
(0.203 – 0.254)
0.016 – 0.050
(0.406 – 1.270)
0– 8 TYP
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483) TYP
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270) BSC
0.228 – 0.244
(5.791 – 6.197)
0.189 – 0.197*
(4.801 – 5.004)
8 7 6 5
0.150 – 0.157**
(3.810 – 3.988)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1 2 3 4
SO8 1298
RELATED PARTS
PART NUMBER | DESCRIPTION | COMMENTS |
LT1178/LT1179 | Dual/Quad 17A Max, Single Supply Precision Op Amps | 70V VOS Max and 2.5V/C Drift Max, 85kHz GBW, 0.04V/s Slew Rate, Input/Output Common Mode Includes Ground |
LT1490A/LT1491A | Dual/Quad Micropower Rail-to-Rail Input and Output Op Amps | Single Supply Input Range: – 0.4V to 44V, Micropower 50A Amplifier, Rail-to-Rail Input and Output, 200kHz GBW |
LT2178/LT2179 | Dual/Quad 17A Max, Single Supply Precision Op Amps | SO-8 and 14-Lead Standard Pinout, 70V VOS Max, 85kHz GBW |
LT1078/LT1079 | Dual/Quad Micropower, Single Supply Precision Op Amps | 70V VOS Max and 0.4V/C Drift, 200kHz GBW, 0.07V/s Slew Rate, Input/Output Common Mode Includes Ground |
LT2078/LT2079 | Dual/Quad Micropower, Single Supply Precision Op Amps | SO-8 and 14-Lead Standard Pinout, 70V VOS Max, 200kHz GBW |
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417● (408)432-1900
FAX: (408) 434-0507 ● TELEX: 499-3977 ● www.linear.com
1635fa LT/TP 0901 1.5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1997
Mouser Electronics
Authorized Distributor
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Analog Devices Inc.:
LT1635IS8#PBF LT1635IN8 LT1635CS8 LT1635IS8#TR LT1635CS8#PBF LT1635CN8 LT1635IS8#TRPBF LT1635IN8#PBF LT1635CS8#TR LT1635CS8#TRPBF LT1635IS8 LT1635CN8#PBF