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OPA4991/-Q1 40 V Low-Offset-Voltage Low Noise Op-Amp
Texas Instruments' dual 4.5 MHz, RRIO op-amps are suitable for high-voltage industrial/automotive industrial applications
Texas Instruments' OPA4991 and OPA4991-Q1 are high-voltage (40 V) general-purpose op-amps that offer exceptional DC precision and AC performance including rail-to-rail input/output, a low offset voltage of ±125 µV, low offset drift of ±0.3 µV/°C, low noise (10.8 nV/√ Hz and 1.8 µVPP), and 4.5 MHz bandwidth.
The devices include unique features such as differential and common-mode input-voltage range to the supply rail, high output current of ±75 mA, a high slew rate of 21 V/µs, high capacitive load drive of 1 nF, and shutdown functionality make the OPA4991 a robust, high-performance op-amp for high-voltage industrial and high-voltage automotive industrial (-Q1) applications. The op-amps are available in microsize packages such as X2QFN, WSON, and SOT-553, as well as standard packages such as SOT-23, SOIC, VSSOP (-Q1 only), and TSSOP, and are specified from -40°C to +125°C.
- AEC-Q100 qualified for automotive applications (-Q1):
- Temperature Grade 1 TA: -40°C to +125°C
- HBM ESD Classification Level 2A
- CDM ESD Classification Level C6
- Low offset voltage: ±125 µV (typ.)
- Low offset voltage drift: ±0.3 µV/°C (typ.)
- Low noise: 10.8 nV/√ Hz at 1 kHz
- High common-mode rejection: 130 dB
- Low bias current: ±10 pA
- Rail-to-rail input and output
- Wide bandwidth: 4.5 MHz GBW
- High slew rate: 21 V/µs
- High capacitive load drive: 1 nF
- MUX-friendly/comparator inputs
- Amp operates with differential inputs up to supply rail
- Amp can be used in open-loop or as a comparator
- Low quiescent current: 560 µA per amp
- Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
- Robust EMIRR performance: EMI/RFI filters on input and supply pins
- Differential and common-mode input voltage range to supply rail
- OPA4991:
- Low-power audio preamps
- Multiplexed data-acquisition systems
- Test and measurement equipment
- ADC driver amps
- SAR ADC reference buffers
- Programmable logic controllers
- High-side and low-side current sensing
- High-precision comparators
- OPA4991-Q1:
- Optimized for AEC-Q100 Grade 1 applications
- Infotainment and clusters
- Passive safety
- Body electronics and lighting
- HEV/EV inverters and motor controls
- Onboard (OBC) and wireless chargers
- Powertrain current sensors
- Advanced driver assistance systems (ADAS)
- High-side current sensing
OPA4991 40 V Low Noise Op-Amps
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | OPA4991IRUCR | IC OPAMP GP 4 CIRCUIT 14X2QFN | 6208 - Immediate | $2.75 | View Details |
|  | OPA4991IDR | IC OPAMP GP 4 CIRCUIT 14SOIC | 3542 - Immediate | $2.60 | View Details |
|  | OPA4991IPWR | IC OPAMP GP 4 CIRCUIT 14TSSOP | 2532 - Immediate | $2.60 | View Details |
OPA4991-Q1 Automotive 40 V Low Noise Op-Amp
| Image | Manufacturer Part Number | Description | Number of Circuits | Output Type | Slew Rate | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|---|
| | OPA4991QPWRQ1 | IC OPAMP GP 4 CIRCUIT 14TSSOP | 4 | Rail-to-Rail | 21V/µs | 5045 - Immediate | $3.01 | View Details |
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