Model No: OPA2140AIDGKR
Texas Instruments OPA2140AIDGKR
Manufacturer: Texas Instruments
SEMICON NO.: OPA2140AIDGKR
Package: 8-VSSOP
Stock: In stock
Description: Amplifier Dual-Channel JFET 11 MHz
SEMICON NO.: OPA2140AIDGKR
Package: 8-VSSOP
Stock: In stock
Description: Amplifier Dual-Channel JFET 11 MHz
Quantity :
| Mfr | Texas Instruments |
| Product Series | OPAx140 (OPA140 / OPA2140 / OPA4140) |
| Device Type | Dual-Channel, JFET-Input Operational Amplifier |
| Number of Channels | 2 (Dual) |
| Amplifier Type | J-FET |
| Output Type | Rail-to-Rail |
| Gain Bandwidth Product (GBP) | 11 MHz |
| Slew Rate (SR) | 20 V/µs |
| Precision Input Offset Voltage | 120 µV (Max) |
| Input Offset Voltage Drift | 1 µV/°C (Max) |
| Common-Mode Rejection Ratio (CMRR) | 126 dB (typical) |
| Power Supply Rejection Ratio (PSRR) | 120 dB (typical) |
| Supply Voltage | Single: 4.5 V to 36 V, Dual: ±2.25 V to ±18 V |
| Operating Temperature | –40°C to +125°C |
| Package | 8-VSSOP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
OPA2140AIDGKR | Texas Instruments op amp, TI amplifier, JFET amp VSSOP-8
The OPA2140AIDGKR from Texas Instruments is a dual-channel, high-precision, low-noise JFET-input operational amplifier in a compact VSSOP-8 (DGK) package. As the dual member of the OPA140/OPA2140/OPA4140 family, it combines 11-MHz unity-gain bandwidth with a 20-V/µs slew rate while drawing only 1.8 mA of quiescent current per channel. Built on Burr-Brown JFET technology, the device delivers a maximum input offset of 120 µV with 1-µV/°C drift, ultra-low 10-pA input bias current, and 5.1-nV/√Hz voltage noise (250-nVpp 1/f noise from 0.1 Hz to 10 Hz). Its rail-to-rail output swing and input common-mode range that extends to the V– rail enable single-supply operation from 4.5 V to 36 V (or ±2.25 V to ±18 V), and every parameter is fully specified over the extended industrial range of –40°C to +125°C.
Applications
The OPA2140AIDGKR dual op amp targets battery-powered instruments, industrial controls, medical instrumentation, photodiode amplifiers, active filters, data acquisition systems, and automatic test equipment. Its JFET inputs and 1/f noise performance make it a preferred low-noise amplifier front-end for sensor conditioning in precision analog front ends, while its 36-V capability suits process-control and 4-20 mA loop interfaces.
Frequently Asked Questions
Q: Is the OPA2140AIDGKR pin-compatible with the SOIC-8 OPA2140AID? A: Yes, both share the standard industry dual-op-amp pinout; only the body size differs (3 mm x 3 mm VSSOP vs. 4.9 mm x 3.9 mm SOIC), so PCB footprints must match accordingly.
Q: Can it replace legacy FET amplifiers like the OPA2134 or OPA2132? A: In most precision and audio paths yes, offering lower offset, lower drift, and higher bandwidth (11 MHz), though designers should verify the OPA2140's 5.1-nV/√Hz noise against each design's SNR budget.
Q: Is the device suitable for photodiode transimpedance amplifiers? A: Yes, the femtoampere-level bias current and 250-nVpp 1/f noise are specifically optimized for high-sensitivity photodiode and electrochemical sensor front ends.
Alternative / Replacement Low-noise Amplifier Models
● OPA2205AIDGKR (TI): 36-V low-noise (2.2-nV/√Hz) zero-drift-precision dual bipolar op amp in the same VSSOP-8 footprint, offering tighter offset for DC-critical designs.
● OPA1642AIDGKR (TI): SoundPlus JFET dual audio op amp with 5.1-nV/√Hz noise, wider ±2.75-V to ±18-V supply range, and rail-to-rail output for premium audio signal paths.
● OPA2277AIDGKR (TI): Ultra-precision 20-µV-offset bipolar dual op amp with lower drift but higher input bias current, a classic drop-in for instrumentation-grade DC paths.
● ADA4622-2ARZ (Analog Devices): 36-V rail-to-rail JFET dual amplifier with 18-MHz bandwidth, a competitive cross-vendor alternative for high-voltage industrial designs.
The OPA2140AIDGKR from Texas Instruments is a dual-channel, high-precision, low-noise JFET-input operational amplifier in a compact VSSOP-8 (DGK) package. As the dual member of the OPA140/OPA2140/OPA4140 family, it combines 11-MHz unity-gain bandwidth with a 20-V/µs slew rate while drawing only 1.8 mA of quiescent current per channel. Built on Burr-Brown JFET technology, the device delivers a maximum input offset of 120 µV with 1-µV/°C drift, ultra-low 10-pA input bias current, and 5.1-nV/√Hz voltage noise (250-nVpp 1/f noise from 0.1 Hz to 10 Hz). Its rail-to-rail output swing and input common-mode range that extends to the V– rail enable single-supply operation from 4.5 V to 36 V (or ±2.25 V to ±18 V), and every parameter is fully specified over the extended industrial range of –40°C to +125°C.
Applications
The OPA2140AIDGKR dual op amp targets battery-powered instruments, industrial controls, medical instrumentation, photodiode amplifiers, active filters, data acquisition systems, and automatic test equipment. Its JFET inputs and 1/f noise performance make it a preferred low-noise amplifier front-end for sensor conditioning in precision analog front ends, while its 36-V capability suits process-control and 4-20 mA loop interfaces.
Frequently Asked Questions
Q: Is the OPA2140AIDGKR pin-compatible with the SOIC-8 OPA2140AID? A: Yes, both share the standard industry dual-op-amp pinout; only the body size differs (3 mm x 3 mm VSSOP vs. 4.9 mm x 3.9 mm SOIC), so PCB footprints must match accordingly.
Q: Can it replace legacy FET amplifiers like the OPA2134 or OPA2132? A: In most precision and audio paths yes, offering lower offset, lower drift, and higher bandwidth (11 MHz), though designers should verify the OPA2140's 5.1-nV/√Hz noise against each design's SNR budget.
Q: Is the device suitable for photodiode transimpedance amplifiers? A: Yes, the femtoampere-level bias current and 250-nVpp 1/f noise are specifically optimized for high-sensitivity photodiode and electrochemical sensor front ends.
Alternative / Replacement Low-noise Amplifier Models
● OPA2205AIDGKR (TI): 36-V low-noise (2.2-nV/√Hz) zero-drift-precision dual bipolar op amp in the same VSSOP-8 footprint, offering tighter offset for DC-critical designs.
● OPA1642AIDGKR (TI): SoundPlus JFET dual audio op amp with 5.1-nV/√Hz noise, wider ±2.75-V to ±18-V supply range, and rail-to-rail output for premium audio signal paths.
● OPA2277AIDGKR (TI): Ultra-precision 20-µV-offset bipolar dual op amp with lower drift but higher input bias current, a classic drop-in for instrumentation-grade DC paths.
● ADA4622-2ARZ (Analog Devices): 36-V rail-to-rail JFET dual amplifier with 18-MHz bandwidth, a competitive cross-vendor alternative for high-voltage industrial designs.
