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ADA4938-1ACPZ-R7
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Analog Devices Differential OpAmps, LFCSP-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownADA4938-1ACPZ-R7
Analog Devices · Differential OpAmps · LFCSP-16(3x3)
ADA4938-1ACPZ-R7 from Analog Devices, in a LFCSP-16(3x3). 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 | −FB | passive | Negative output feedback pin, connected through the external feedback resistor to the summing node. |
| 2 | +IN | input | Positive input summing node. |
| 3 | −IN | input | Negative input summing node. |
| 4 | +FB | passive | Positive output feedback pin, connected through the external feedback resistor to the summing node. |
| 5 | +VS | power_in | Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum. |
| 6 | +VS | power_in | Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum. |
| 7 | +VS | power_in | Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum. |
| 8 | +VS | power_in | Positive supply voltage (pins 5 to 8 are all +VS); supply range +5 V to ±5 V, 12 V absolute maximum. |
| 9 | VOCM | input | Output common-mode voltage pin that sets the output common-mode level. |
| 10 | +OUT | output | Positive output for load connection. |
| 11 | −OUT | output | Negative output for load connection. |
| 12 | PD | input | Power-down pin. |
| 13 | −VS | power_in | Negative supply voltage (pins 13 to 16 are all −VS). |
| 14 | −VS | power_in | Negative supply voltage (pins 13 to 16 are all −VS). |
| 15 | −VS | power_in | Negative supply voltage (pins 13 to 16 are all −VS). |
| 16 | −VS | power_in | Negative supply voltage (pins 13 to 16 are all −VS). |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | LFCSP-16(3x3) |
| Category | Amplifiers |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Offset Voltage (dual supply) | VOS, dm | 1 | 4 | mV | VOS, dm = VOUT, dm/2; VDIN+ = VDIN− = 0 V | 3 | |
| Offset Voltage (single supply) | VOS, dm | 1 | 4 | mV | VOS, dm = VOUT, dm/2; VDIN+ = VDIN− = VOCM = 2.5 V | 5 | |
| Supply Operating Range (dual supply) | 4.5 | 11 | V | 4 | |||
| Supply Operating Range (single supply) | 4.5 | 11 | V | 6 | |||
| Quiescent Current (dual supply) | IQ | 37 | 40 | mA | Per amplifier | 4 | |
| Quiescent Current Powered down (dual supply) | IQ | 2 | 3 | mA | Powered down | 4 | |
| Quiescent Current (single supply) | IQ | 34 | 36.5 | mA | 6 | ||
| Quiescent Current Powered down (single supply) | IQ | 1 | 1.7 | mA | Powered down | 6 | |
| VOCM Gain (dual supply) | 0.95 | 1 | 1.05 | V/V | ΔVOUT, cm/ΔVOCM; ΔVOCM = ±1 V | 4 | |
| VOCM Gain (single supply) | 0.95 | 1 | 1.05 | V/V | ΔVOUT, cm/ΔVOCM; ΔVOCM = ±1 V | 6 | |
| PD Input Voltage Powered down | 2.5 | V | Powered down | 4 | |||
| PD Input Voltage Enabled | 3 | V | Enabled | 4 | |||
| Operating Temperature Range | -40 | 85 | °C | 4 | |||
| Supply Voltage | 12 | V | 7 | ||||
| Storage Temperature Range | -65 | 125 | °C | 7 | |||
| Lead Temperature | 300 | °C | Soldering, 10 sec | 7 | |||
| Junction Temperature | 150 | °C | 7 | ||||
| Thermal Resistance 16-Lead LFCSP | θJA | 95 | °C/W | Exposed pad soldered, 4-layer board | 7 | ||
| -3 dB Small Signal Bandwidth (dual supply) | 1000 | MHz | VOUT = 0.1 V p-p | 3 | |||
| Slew Rate (dual supply) | 4700 | V/µs | VOUT = 2 V p-p | 3 | |||
| Input Voltage Noise | 2.6 | nV/√Hz | f = 10 MHz | 3 | |||
| CMRR (dual supply) | -75 | dB | ΔVOUT, dm/ΔVIN, cm; ΔVIN, cm = ±1 V, f = 1 MHz | 3 | |||
| Power Supply Rejection Ratio (dual supply) | -80 | dB | ΔVOUT, dm/ΔVS; ΔVS = ±1 V | 4 | |||
| Linear Output Current (dual supply) | 75 | mA | Per amplifier, RL, dm = 20 Ω, f = 10 MHz; printed as ±75 | 3 |
CAD (KiCad official)
- Symbol:
ADA4938-1ACPZ-R7 - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: LFCSP-16(3x3) (KiCad packages3D, STEP)
- 3D model files:
ada4938-1acpz-r7-etched.step/ada4938-1acpz-r7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ada4938-1acpz-r7.step/ada4938-1acpz-r7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (26 pp, sha256
4aac21d38044c837, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).