Texas Instruments OPA1688IDRGR, General Purpose Amplifier, 2 Circuits, Rail-to-Rail, 10 MHz Gain Bandwidth, 8 V/µs Slew Rate, 4.5 V to 36 V Supply, 8-WFDFN Exposed Pad / 8-SON (3x3), -40°C to 85°C.
| Parameter | Value |
|---|---|
| Output type | Rail-to-Rail |
| Mounting | Surface Mount |
| Amplifier type | General Purpose |
| Voltage - input offset | 250 µV |
| Voltage - supply span | 4.5 V |
| Current - supply | 1.6mA (x2 Channels) |
| Current - input bias | 10 pA |
| Current - output (Channel) | 75 mA |
| Operating temperature | -40°C ~ 85°C |
| Gain bandwidth product | 10 MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Slew rate | 8V/µs |
| Case | 8-WFDFN Exposed Pad |
| Number of circuits | 2 |
The 1.6 mA quiescent supply per amplifier (both channels) keeps the power budget lean for multi-channel boards. Input bias current is 10 pA, so high-impedance sensor inputs won't see significant loading.
The pad is also the ground connection, so the PCB layout should match the datasheet's recommended land pattern.
Yes, the output is rail-to-rail. The input common-mode range is not rail-to-rail — it extends 1.1 V below the positive rail at 3.3 V single supply, so high-side sensing at low voltages needs a different part.
It is not pin-compatible — the footprint differs.