Packaging information
| Package | Pins SOIC (D) | 8 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,500 | LARGE T&R |
Features for the OPA862
- Wide Supply Range: 3 V to 12.6 V
- High Input Impedance: 325 MΩ
- Voltage Noise:
- Input-Referred (f ≥ 5 kHz): 2.3 nV/√ Hz
- Output-Referred (f ≥ 10 kHz): 8.3 nV/√ Hz
- Differential Output Offset: ±700 µV (Maximum)
- Output Offset Drift: ±1.5 µV/°C (Typical)
- A2 Bias Current Cancellation, IB: ±5 nA (Typical)
- Gain-Bandwidth Product: 400 MHz
- Small-Signal Bandwidth: 44 MHz (G = 2 V/V)
- Slew Rate: 140 V/µs
- HD2, HD3 (VOD = 10 VPP, 50 kHz): –122 dBc, –140 dBc
- Rail-to-Rail Output:
- High Linear Output Current: 60 mA (Typical)
- Quiescent Current: 3.1 mA
- Disable mode: 12-µA Quiescent Current
- Extended Temperature Operation: –40°C to +125°C
Description for the OPA862
The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driver with high input impedance for directly interfacing with sensors. The device only consumes 3.1-mA quiescent current for an output-referred noise density of 8.3 nV/√ Hz in a gain of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩ resistors must be less than 1 nV/√ Hz to achieve the OPA862 equivalent output-referred noise density of 8.3 nV/√ Hz. The OPA862 can be configured for other gains using external resistors. The device has a large gain-bandwidth product of 400 MHz and a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bit performance over comparable single-ended-to-differential ADC drivers. The device includes a reference input pin for setting the output common-mode voltage.
The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V, and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortion performance for 18-bit systems. The device includes a disable mode that consumes only 12-µA quiescent current in power-down state.
The OPA862 is rated to work over the extended industrial temperature range of –40°C to +125°C.