# OPA1642AQDGKRQ1

**Texas Instruments** · Audio Amplifiers · VSSOP-8

OPA1642AQDGKRQ1 from Texas Instruments, in a VSSOP-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 | OUT A | output | Output of amplifier channel A. |
| 2 | -IN A | input | Inverting input of channel A. |
| 3 | +IN A | input | Noninverting input of channel A. |
| 4 | V- | power_in | Negative (lowest) power supply pin. |
| 5 | +IN B | input | Noninverting input of channel B. |
| 6 | -IN B | input | Inverting input of channel B. |
| 7 | OUT B | output | Output of amplifier channel B. |
| 8 | V+ | power_in | Positive (highest) power supply pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Amplifiers/Comparators |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VS |  |  | 40 | V |  | 4 |
| Input current | IIN | -10 |  | 10 | mA |  | 4 |
| Operating temperature | TA | -55 |  | 125 | °C |  | 4 |
| Junction temperature | TJ | -65 |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Supply voltage, single supply | VS | 4.5 |  | 36 | V | Single supply | 4 |
| Supply voltage, dual supply | VS | 2.25 |  | 18 | V | Dual supply | 4 |
| Specified temperature |  | -40 |  | 125 | °C |  | 4 |
| Input offset voltage | VOS |  | 1 | 3.5 | mV | VS = ±18 V | 5 |
| PSRR, VOS vs power supply | PSRR |  | 0.14 | 2 | μV/V | VS = ±2.25 V to ±18 V | 5 |
| Input bias current | IB | -20 | 2 | 20 | pA | VCM = 0 V | 5 |
| Input offset current | IOS | -20 | 2 | 20 | pA | VCM = 0 V | 5 |
| Common-mode rejection ratio | CMRR | 120 | 126 |  | dB | VCM = (V–) – 0.1 V to (V+) – 3.5 V, VS = ±18 V | 5 |
| Open-loop voltage gain, OPA1642-Q1, RL = 10 kΩ | AOL | 114 | 134 |  | dB | OPA1642-Q1: (V–) + 0.2 V ≤ VO ≤ (V+) – 0.2 V, RL = 10 kΩ | 6 |
| Open-loop voltage gain, OPA1642-Q1, RL = 2 kΩ | AOL | 111 | 126 |  | dB | OPA1642-Q1: (V–) + 0.35 V ≤ VO ≤ (V+) – 0.35 V, RL = 2 kΩ | 6 |
| Specified supply voltage | VS | 2.25 |  | 18 | V |  | 6 |
| Quiescent current (per amplifier) | IQ |  | 1.8 | 2.3 | mA | IOUT = 0 A | 6 |
| Specified temperature range |  | -40 |  | 125 | °C |  | 6 |
| Operating temperature range |  | -55 |  | 125 | °C |  | 6 |
| Junction-to-ambient thermal resistance (DGK, VSSOP-8) | RθJA |  | 180 |  | °C/W | DGK (VSSOP) 8 pins | 4 |
| Junction-to-case (top) thermal resistance (DGK, VSSOP-8) | RθJC(top) |  | 55 |  | °C/W | DGK (VSSOP) 8 pins | 4 |
| Junction-to-board thermal resistance (DGK, VSSOP-8) | RθJB |  | 130 |  | °C/W | DGK (VSSOP) 8 pins | 4 |
| Junction-to-board characterization parameter (DGK, VSSOP-8) | ψJB |  | 120 |  | °C/W | DGK (VSSOP) 8 pins | 4 |

## CAD (KiCad official)

- Symbol: `OPA1642AQDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `opa1642aqdgkrq1-etched.step` / `opa1642aqdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa1642aqdgkrq1.step` / `opa1642aqdgkrq1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/opa1641-q1) (34 pp, sha256 `bd47a111667d2ec0`, retrieved 2026-10-10, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/opa1642aqdgkrq1-datasheet.pdf)