OPA2192IDGKR - 36V Precision RRIO Dual Op Amp | Texas Instruments
料号： OPA2192IDGKR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $2.85 | $285.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.05 | $2,050.00 |
| 2,500 | $1.78 | $4,450.00 |
OPA2192IDGKR 概述
An operational amplifier (op amp) is a high-gain DC-coupled analog circuit block that amplifies differential input voltages. The OPA2192 belongs to the precision amplifier sub-class, where DC accuracy (low offset, low drift) and rail-to-rail signal swing matter more than raw speed. It sits in the broader hierarchy of linear ICs -> amplifiers -> operational amplifiers -> precision RRIO op amps -> semiconductor, and competes with parts such as the ADA4522 and OPA2188. Its main role in a system is to condition small analog signals (sensor bridges, shunt currents, thermocouples) with minimal added error and to drive ADC reference or output stages up to the supply rails.
Distinctive features include differential input-voltage range to the supply rail, high-output current drive with no phase reversal, low-input-bias current with e-trim, and integrated EMI/RFI rejection at 1 GHz. The OPA2192 also offers independent short-circuit protection on the outputs and a wide 4.5-V to 36-V supply headroom that lets a single device serve both 5-V analog rails and 24-V industrial transducers.
Architecturally, the OPA2192 uses a bipolar input stage with chopper-free e-trim post-package calibration, preserving low noise while achieving 10-MHz GBW at 20 V/µs. The RRIO output stage swings within millivolts of either rail at moderate loads, eliminating headroom loss in low-voltage ADC interfaces and giving designers full dynamic range on 5-V or 12-V rails.
Typical applications include precision analog input modules, 4-20 mA loop transmitters, multi-channel data acquisition front ends, test and measurement instruments, and active filtering in audio paths. Designers favor it where both 5-V digital-rail operation and 24-V industrial transducers must share one BOM line.
When using the OPA2192, observe the maximum differential input-voltage limit and add an input-series resistor for true over-voltage protection; a 2-kΩ resistor on each input typically prevents fault-current damage during 36-V transients. This page also synthesizes distributor pricing, drop-in alternates, and practical design notes that the TI datasheet alone does not surface.
直接替换替代料： OPA2192IDGKR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： OPA2192IDGKR （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package, Slew Rate, Input Offset Voltage (max), MSL Level.
快速对比工具——选择替代料号进行并排对比：
OPA2192IDGKT
✅ 直接替换✓ 有现货
$1.38 / 个
查看数据手册 →OPA2192IDGKR-Q1
✅ 直接替换📋 参考替代料（不在目录中）
OPA2192IDGK
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →OPA2192IDGKR 最大额定值与电气特性
| Number of Channels | 2 (dual) |
| Supply Voltage Range (Single) | 4.5 V to 36 V |
| Supply Voltage Range (Dual) | ±2.25 V to ±18 V |
| Input Offset Voltage (typ) | ±5 µV |
| Input Offset Voltage (max) | ±25 µV |
| Input Offset Drift (typ) | ±0.2 µV/°C |
| Unity-Gain Bandwidth | 10 MHz |
| Slew Rate | 20 V/µs |
| Input Bias Current (typ) | ±5 pA |
| Common-Mode Rejection Ratio (CMRR) | 120 dB (typ) |
| Power-Supply Rejection Ratio (PSRR) | 120 dB (typ) |
| Open-Loop Gain (AOL) | 120 dB |
| Output Swing (rail-to-rail) | Within 100 mV of rails at 10 kΩ |
| Short-Circuit Current | ±65 mA (typ) |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 8-pin VSSOP (DGK) |
| 安装类型 | Surface Mount |
| MSL 等级 | 2 (1 year floor life) |
| RoHS 状态 | Compliant |
| Technology | e-trim CMOS/bipolar input |
OPA2192IDGKR 引脚配置
| 引脚 1 | OUT A — Channel A amplifier output |
| 引脚 2 | IN- A — Channel A inverting input |
| 引脚 3 | IN+ A — Channel A non-inverting input |
| 引脚 4 | V- — Negative supply (or GND for single supply) |
| 引脚 5 | IN+ B — Channel B non-inverting input |
| 引脚 6 | IN- B — Channel B inverting input |
| 引脚 7 | OUT B — Channel B amplifier output |
| 引脚 8 | V+ — Positive supply |
典型应用
OPA2192IDGKR 适用于 6 应用s: Precision Analog Input Module for 24-V Industrial Sensors, 4-20 mA Current Loop Transmitter Output Stage, Multi-Channel 16-/18-Bit Data Acquisition Front End, Active Filter and Analog Signal-Conditioning Block, Test and Measurement Instrumentation Input Buffer, Sensor Signal Conditioning for Portable/Battery-Powered Devices.
Precision Analog Input Module for 24-V Industrial Sensors
The OPA2192IDGKR fits 24-V industrial analog-input modules because it accepts a 4.5-V to 36-V single supply and provides ±5 µV typical input offset, removing the need for a negative rail just to bias a bridge sensor. Its 120-dB CMRR rejects 50-Hz/60-Hz power-line common-mode noise, and the e-trim low offset drift of ±0.2 µV/°C holds calibration across -40°C to +125°C. Place the op amp in a unity-gain or gain-of-10 instrumentation front-end, then drive a 16-bit ADC; the 10-MHz GBW leaves ample headroom for closed-loop bandwidth at gain 10. Unlike chopper amplifiers, the OPA2192IDGKR avoids chopping sidebands that can alias into downstream ADCs.
推荐
4-20 mA Current Loop Transmitter Output Stage
The OPA2192IDGKR is a strong output-stage choice for 4-20 mA current-loop transmitters because of its ±65-mA short-circuit output current, rail-to-rail output swing, and 36-V supply tolerance for HART-modulated signals. Used as a Howland-current-pump or as the output of a XTR-style loop driver, the op amp's 20-V/µs slew rate supports HART 1200-baud/2200-Hz FSK without distortion. The wide supply headroom lets a single BOM line drive 24-V loop compliance. Designers should add input series-resistance for loop-fault protection.
推荐
Multi-Channel 16-/18-Bit Data Acquisition Front End
In multi-channel data-acquisition boards the OPA2192IDGKR serves as the per-channel input buffer and ADC driver thanks to its rail-to-rail input/output and very low ±5-µV input offset. Two channels in one VSSOP-8 package shrink the BOM for 8-channel boards, where four OPA2192 devices replace eight SOT-23 singles. Its 10-MHz GBW and 20-V/µs slew rate let the same part drive SAR ADCs at full throughput. Low bias current prevents ADC-input load errors, and e-trim calibration avoids the auto-zero glitches of chopper amplifiers that could couple into ADC sampling windows.
推荐
Active Filter and Analog Signal-Conditioning Block
The OPA2192IDGKR is well-suited to active low-pass, high-pass, and band-pass filters in precision signal paths because its 10-MHz GBW comfortably supports multi-kHz cutoff filters at moderate Q. Rail-to-rail input/output preserves dynamic range on 5-V rails, and the 120-dB CMRR rejects supply-borne noise in mixed-signal boards. Designers commonly build Sallen-Key or multiple-feedback low-pass stages for sensor-signal conditioning, where the op amp's 20-V/µs slew rate limits distortion on transient peaks. The dual package delivers both halves of a fourth-order filter in one VSSOP-8 footprint.
推荐
Test and Measurement Instrumentation Input Buffer
Inside test-and-measurement equipment such as bench multimeters, oscilloscope front ends, and laboratory data loggers, the OPA2192IDGKR provides a wide-supply, low-offset input buffer that scales signals from µV to tens of volts. The 36-V supply tolerance handles 10:1 / 100:1 probe-attenuator nodes directly. Two channels per VSSOP-8 package allow differential-input buffering for floating measurements. ±0.2-µV/°C typical drift means annual recalibration cycles are realistic for bench instruments. The e-trim offset keeps gain-error budgets small for 5½-digit measurement systems.
推荐
Sensor Signal Conditioning for Portable/Battery-Powered Devices
In battery-powered portable devices the OPA2192IDGKR draws low quiescent current per channel and tolerates a single lithium-cell supply down to 4.5 V, making it useful for sensor signal chains such as gas, optical, or electrochemical sensors. Rail-to-rail input/output preserves ADC dynamic range on 5-V USB or 3.7-V lithium rails (when followed by a charge pump). The small VSSOP-8 footprint preserves board area in wearables and handheld analyzers. Designers pair it with low-power ADCs such as the ADS131A02 for sub-mW multi-channel sensor modules that still need precision DC.
推荐
推荐产品汇总
工程参考数据： OPA2192IDGKR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | OPA2192IDGKT | OPA2192IDGKR-Q1 | OPA2192IDGK |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same |
| Number of Channels | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V |
| Unity-Gain Bandwidth | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Slew Rate | 20 V/µs | 20 V/µs | 20 V/µs | 20 V/µs |
| Input Offset Voltage (typ) | ±5 µV | ±5 µV | ±5 µV | ±5 µV |
| Offset Drift (typ) | ±0.2 µV/°C | ±0.2 µV/°C | ±0.2 µV/°C | ±0.2 µV/°C |
| Rail-to-Rail | Input and Output | Input and Output | Input and Output | Input and Output |
| Automotive Grade (AEC-Q100) | No | No | Yes | No |
关键差异点
- Higher bandwidth and slew rate than typical precision RRIO op amps （对比 ADA4522-2)
- E-trim precision without chopper side-effects （对比 OPA2188)
- 36-V supply headroom for industrial 24-V rails （对比 OPA2333)
- AEC-Q100 grade option in same VSSOP-8 footprint （对比 OPA2192IDGKR-Q1)
设计说明
Estimated: place a 0.1 µF X7R ceramic bypass capacitor within 5 mm of the V+ pin and route the V- (GND) plane directly to the VSSOP thermal pad. Keep input trace lengths matched for both channels, since mismatched source impedances convert input bias current into offset mismatch. A solid ground plane beneath the device reduces EMI coupling; the VSSOP exposed pad should be soldered to the ground plane for thermal relief even at moderate dissipation levels under 100 mW per channel.
Estimated: never drive the inputs beyond the supply rails without current-limiting input series resistance. A 2 kΩ series resistor on each input limits input fault current to roughly 18 mA at a 36-V over-voltage, well within the OPA2192IDGKR's ±10-mA input rating. Also avoid output capacitive loads exceeding 1 nF without an isolation resistor - the OPA2192 can drive large capacitance but with reduced phase margin. If using the device in a unity-gain buffer, place a 10-50 Ω isolation resistor between output and load.
Estimated: the e-trim calibration achieves ±5 µV typical offset without chopper artifacts, but at high gains the input offset voltage is multiplied along with the signal. For a gain-of-100 stage a 5-µV offset appears as 500 µV at the output, which can be 5 LSBs at 16-bit resolution. To retain full 16-bit DC accuracy at high gains, add a downstream zero-calibration routine in software or use a precision instrumentation amplifier such as the INA828 in front of the OPA2192IDGKR. The 120-dB CMRR and PSRR ensure these calibration constants stay stable across supply and temperature variations.
Estimated: total quiescent current per channel is roughly 1 mA at 36 V (about 36 mW per channel). For battery-powered applications, evaluate the lower-IQ OPA202 or OPA2333 instead. Always decouple the supply with both a 0.1 µF ceramic high-frequency bypass and a 1-10 µF tantalum or polymer bulk capacitor to handle output-step current transients. Place the bulk capacitor within 1 cm of the V+ pin to suppress voltage-rail droop during large-signal output transitions.
合规信息
RoHS and REACH compliant per TI product page. The -Q1 suffix variant (OPA2192IDGKR-Q1) is AEC-Q100 qualified for automotive applications. Halogen-free package per TI environmental compliance statements.
