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LT1635CS8#PBF
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Analog Devices Operational Amplifier, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownLT1635CS8#PBF
Analog Devices · Operational Amplifier · SO-8
LT1635CS8#PBF from Analog Devices, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | REFOUT | output | Reference amplifier output providing the 200mV reference (referred to V-) when pin 1 is tied to REF FB pin 8; it can source 2mA and sink 10µA and swings only to within 0.8V (typ) of the positive rail. |
| 2 | OP AMP IN (-) | input | Inverting input of the rail-to-rail output op amp, with phase reversal protection and protective input resistors. |
| 3 | OP AMP IN (+) | input | Noninverting input of the op amp, whose common mode range includes ground (0V to 4V at VS = 5V). |
| 4 | V- | power_in | Negative supply (ground in single-supply operation); the 200mV reference is referenced to this pin. |
| 5 | BALANCE | passive | Offset null pin, connected to a variable voltage derived from the reference output to adjust the op amp offset by typically -2mV to 8mV. |
| 6 | OP AMP OUT | output | Rail-to-rail op amp output that swings within 15mV of each rail with no load, delivers 20mA min, and drives up to 1000pF. |
| 7 | V+ | power_in | Positive supply pin (1.2V to ±5V total up to 14V max), to be bypassed with about 0.1µF. |
| 8 | REF FB | input | Reference amplifier feedback input, tied to pin 1 for a 200mV (189mV to 211mV) sense voltage, with feedback current of 3.5nA typ into the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SO-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Total Supply Voltage (V+ to V-) | 14 | V | 2 | ||||
| Input Differential Voltage | 14 | V | 2 | ||||
| Input Current | -25 | 25 | mA | 2 | |||
| Operating Temperature Range | -40 | 85 | °C | (Note 2) | 2 | ||
| Junction Temperature | 150 | °C | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Thermal Resistance Junction-to-Ambient (S8 package) | θJA | 190 | °C/W | S8 package | 2 | ||
| Input Offset Voltage | VOS | 0.3 | 1.3 | mV | 2 | ||
| Input Offset Voltage | VOS | 0.5 | 1.6 | mV | 0°C ≤ TA ≤ 70°C ● | 2 | |
| Offset Voltage Adjust Range, Positive Adjust | VOS ADJ | 6 | 8 | mV | Positive Adjust ● | 2 | |
| Offset Voltage Adjust Range, Negative Adjust | VOS ADJ | -1.4 | -2 | mV | Negative Adjust ● | 2 | |
| Input Offset Current | IOS | 0.2 | 0.6 | nA | ● | 2 | |
| Input Bias Current | IB | 2 | 4.5 | nA | 2 | ||
| Input Bias Current | IB | 2.5 | 5.5 | nA | ● | 2 | |
| Input Resistance Differential | RIN | 7 | 25 | MΩ | Differential ● | 2 | |
| Input Voltage Range | 0 | 4 | V | ● | 2 | ||
| Common Mode Rejection Ratio | CMRR | 92 | 110 | dB | VCM = 0V to 4V | 2 | |
| Common Mode Rejection Ratio | CMRR | 85 | 97 | dB | ● | 2 | |
| Large-Signal Voltage Gain | AVOL | 100 | 450 | V/mV | VO = 200mV to 4.5V, No Load ● | 2 | |
| Large-Signal Voltage Gain | AVOL | 45 | 200 | V/mV | VO = 200mV to 4.5V, RL = 1.1k ● | 2 | |
| Large-Signal Voltage Gain | AVOL | 35 | 150 | V/mV | VO = 200mV to 4.5V, RL = 500Ω ● | 2 | |
| Shunt Gain | 15 | 25 | V/mV | IOUT = 0.1mA to 5mA; VO = 1.5V to 6.45V | 2 | ||
| Shunt Gain | 8 | 20 | V/mV | (Note 5) ● | 2 | ||
| Output Voltage Swing Low | VOL | 2 | 10 | mV | VS = 5V, No Load ● | 2 | |
| Output Voltage Swing Low | VOL | 125 | 250 | mV | VS = 5V, ISINK = 5mA ● | 2 | |
| Output Voltage Swing Low | VOL | 200 | 500 | mV | VS = 5V, ISINK = 10mA ● | 2 | |
| Output Voltage Swing High | VOH | 4.975 | 4.985 | V | VS = 5V, No Load ● | 2 | |
| Output Voltage Swing High | VOH | 4.65 | 4.8 | V | VS = 5V, ISOURCE = 5mA ● | 2 | |
| Output Voltage Swing High | VOH | 4.55 | 4.75 | V | VS = 5V, ISOURCE = 10mA ● | 2 | |
| Short-Circuit Current (short to GND) | ISC | 20 | 40 | mA | VS = 5V, Short to GND ● | 3 | |
| Short-Circuit Current (short to VCC) | ISC | 20 | 40 | mA | VS = 5V, Short to VCC ● | 3 | |
| Power Supply Rejection Ratio | PSRR | 93 | 100 | dB | VS = 1.2V to 12V, VCM = VO = 0.2V | 3 | |
| Power Supply Rejection Ratio | PSRR | 90 | 97 | dB | ● | 3 | |
| Minimum Operating Supply Voltage | 1.1 | 1.2 | V | ● (Note 3) | 3 | ||
| Supply Current | IS | 130 | 200 | µA | 3 | ||
| Supply Current | IS | 150 | 260 | µA | ● | 3 | |
| Input Offset Voltage (±5V) | VOS | 0.3 | 1.5 | mV | 3 | ||
| Input Offset Voltage (±5V) | VOS | 0.5 | 1.9 | mV | 0°C ≤ TA ≤ 70°C ● | 3 | |
| Offset Voltage Adjust Range, Positive Adjust (±5V) | VOS ADJ | 6 | 8 | mV | Positive Adjust ● | 3 | |
| Offset Voltage Adjust Range, Negative Adjust (±5V) | VOS ADJ | -1.4 | -2 | mV | Negative Adjust ● | 3 | |
| Input Offset Current (±5V) | IOS | 0.2 | 0.6 | nA | ● | 3 | |
| Input Bias Current (±5V) | IB | 2 | 4.5 | nA | 3 | ||
| Input Bias Current (±5V) | IB | 2.5 | 5.5 | nA | ● | 3 | |
| Input Resistance Differential (±5V) | RIN | 7 | 35 | MΩ | Differential ● | 3 | |
| Input Voltage Range (±5V) | -5 | 4 | V | ● | 3 | ||
| Common Mode Rejection Ratio (±5V) | CMRR | 94 | 115 | dB | VCM = -5V to 4V | 3 | |
| Common Mode Rejection Ratio (±5V) | CMRR | 91 | 110 | dB | ● | 3 | |
| Large-Signal Voltage Gain (±5V) | AVOL | 175 | 300 | V/mV | VO = -4.5V to 4.5V, No Load ● | 4 | |
| Large-Signal Voltage Gain (±5V) | AVOL | 15 | 100 | V/mV | VO = -4.5V to 4.5V, RL = 1.1k ● | 4 | |
| Large-Signal Voltage Gain (±5V) | AVOL | 10 | 60 | V/mV | VO = -4.5V to 4.5V, RL = 500Ω ● | 4 | |
| Output Voltage Swing (±5V) | VO | -4.975 | 4.985 | mV | VS = ±5V, No Load ● | 4 | |
| Output Voltage Swing (±5V) | VO | -4.65 | 4.75 | mV | VS = ±5V, ISINK = 5mA ● | 4 | |
| Output Voltage Swing (±5V) | VO | -4.5 | 4.6 | mV | VS = ±5V, ISINK = 10mA ● | 4 | |
| Short-Circuit Current (±5V) | ISC | -20 | 40 | mA | VS = ±5V | 4 | |
| Power Supply Rejection Ratio (±5V) | PSRR | 90 | 100 | dB | VS = ±1V to ±6V, VCM = VO = 0V | 4 | |
| Power Supply Rejection Ratio (±5V) | PSRR | 88 | 98 | dB | ● | 4 | |
| Supply Current (±5V) | IS | 135 | 215 | µA | 4 | ||
| Supply Current (±5V) | IS | 160 | 280 | µA | ● | 4 | |
| Feedback Sense Voltage (5V reference) | VREF | 189 | 200 | 211 | mV | ● Voltage at Pin 1 with Pin 1 Connected to Pin 8 (Note 6) | 3 |
| Reference Drift (5V reference) | TC VREF | 30 | 100 | ppm/°C | (Note 4) ● | 3 |
CAD (KiCad official)
- Symbol:
LT1635CS8#PBF - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
lt1635cs8-pbf-etched.step/lt1635cs8-pbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt1635cs8-pbf.step/lt1635cs8-pbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (12 pp, sha256
246f850a2f4ebb5c, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).