TLV2452AIDGKR - Dual 23uA RRIO Op Amp 220kHz | Texas Instruments
料号： TLV2452AIDGKR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.05 | $1.05 |
| 10 | $0.95 | $9.50 |
| 100 | $0.78 | $78.00 |
| 500 | $0.66 | $330.00 |
| 1,000 | $0.55 | $550.00 |
TLV2452AIDGKR 概述
An operational amplifier is a high-gain differential-to-single-ended voltage amplifier and a fundamental building block of analog signal chains, used as buffers, active filters, comparators, and transimpedance amplifiers. Op amps sit within the linear IC hierarchy alongside comparators and voltage regulators; the TLV2452 belongs to the low-power (micropower) op amp family, which prioritizes ultra-low quiescent current for battery-operated systems.
Key features include true rail-to-rail input common-mode range and rail-to-rail output swing to within 5mV of each rail at light loads, maximizing dynamic range in low-voltage designs. The A-grade version guarantees a maximum input offset voltage of 1.5mV, and CMOS inputs deliver 1pA typical input bias current for high-impedance sensor interfaces. Micropower 23uA-per-channel consumption directly extends battery life in always-on circuits.
Fabricated on a CMOS process, the TLV2452 offers high input impedance with internal ESD protection and is specified from -40C to +125C. The dual-channel DGK-8 package saves board space versus two single amplifiers. According to the TLV245x datasheet (Rev. F), the family also includes shutdown variants for further power savings.
Typical applications include battery monitoring, portable medical devices, photodiode amplification, and low-power active filters. Rail-to-rail output allows direct ADC interfacing without level shifting, and the low quiescent current suits IoT always-on sensing.
Design tip: decouple the supply with a 0.1uF ceramic close to V+, and remember the 220kHz GBW limits closed-loop bandwidth - keep gains and filter frequencies modest to preserve phase margin.
直接替换替代料： TLV2452AIDGKR ——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： TLV2452AIDGKR （相同外形与封装尺寸） ——差异在于 Package, Input/Output Type, Mounting Type, Automotive Qualification, Gain Bandwidth Product.
快速对比工具——选择替代料号进行并排对比：
TLV2452AIDGKR-Q1
✅ 直接替换✓ 有现货
$0.55 / 个
查看数据手册 →TLV2452IDGKR
✅ 直接替换📋 参考替代料（不在目录中）
LMV932MMX/NOPB
✅ 直接替换✓ 有现货
$0.75 / 个
查看数据手册 →MCP6022-E/MS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MCP6282-E/MS
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV2452AIDGKR 最大额定值与电气特性
| Amplifier Channels | 2 (Dual) |
| Supply Voltage Range | 2.7 V to 6 V (single), ±1.35 V to ±3 V (dual) |
| Quiescent Current per Channel | 23 uA |
| Gain Bandwidth Product | 220 kHz |
| Slew Rate | 0.11 V/us |
| Input Offset Voltage (A-grade max) | 1.5 mV |
| Input Bias Current | 5 nA (1 pA typical, CMOS) |
| CMRR | 80 dB |
| Input Voltage Noise Density | 52 nV/sqrt(Hz) |
| Input/Output Type | Rail-to-Rail Input and Output (RRIO) |
| 工作温度 | -40C to +125C |
| 封装 | 8-VSSOP (DGK, MSOP) |
| 安装类型 | Surface Mount (SMD/SMT) |
| Series | TLV245x (23-uA 220-kHz RRIO family) |
| RoHS 状态 | Compliant |
TLV2452AIDGKR 引脚配置
| 引脚 1 | OUT A — Amplifier A output |
| 引脚 2 | -IN A — Amplifier A inverting input |
| 引脚 3 | +IN A — Amplifier A non-inverting input |
| 引脚 4 | V- — Negative supply / ground |
| 引脚 5 | +IN B — Amplifier B non-inverting input |
| 引脚 6 | -IN B — Amplifier B inverting input |
| 引脚 7 | OUT B — Amplifier B output |
| 引脚 8 | V+ — Positive supply |
典型应用
TLV2452AIDGKR 适用于 6 应用s: Battery-Powered Monitoring, Portable Medical Devices, Photodiode Transimpedance Amplification, IoT Always-On Sensing, Low-Power Active Filters, ADC Input Signal Conditioning.
Battery-Powered Monitoring
The TLV2452AIDGKR draws only 23uA per channel from a 2.7V to 6V supply, directly extending battery life in always-on battery monitors. Its rail-to-rail input tolerates cell voltages approaching ground, and the RRIO output swings to within 5mV of the rails, maximizing ADC input dynamic range on 3.3V rails. Used as a buffer or gain stage between the sense resistor divider and an ADC, the 220kHz GBW is ample for slow battery telemetry, while dual channels allow simultaneous voltage and current conditioning in one 8-VSSOP package.
推荐
Portable Medical Devices
In portable medical diagnostics such as glucose meters and pulse sensors, the TLV2452AIDGKR's 1pA typical input bias current prevents sensor loading on high-impedance electrodes, while the 1.5mV maximum offset (A-grade) keeps DC errors below typical bio-signal thresholds. The 23uA per channel quiescent current supports multi-day battery runtimes, and -40C to +125C operation covers sterilization-adjacent environments. Rail-to-rail output drives ADC inputs directly without level shifting, simplifying the analog front end in compact, battery-operated handheld instruments.
推荐
Photodiode Transimpedance Amplification
The CMOS inputs of the TLV2452AIDGKR contribute only 1pA typical bias current, so with a 10M-ohm feedback resistor the offset error from bias is a negligible 10uV - critical for photodiode TIA stages where dark-current signals are microvolts. The rail-to-rail input accommodates photodiodes biased near ground, and 23uA quiescent current suits battery-powered optical sensors. Keep closed-loop bandwidth below the 220kHz GBW limits; for large-area photodiodes with high capacitance, add a feedback capacitor to preserve phase margin.
推荐
IoT Always-On Sensing
For IoT nodes that duty-cycle infrequently, the TLV2452AIDGKR's 23uA per channel keeps analog front-end overhead minimal between RF transmissions. The 2.7V floor supports operation down to two depleted alkaline cells, and true rail-to-rail I/O preserves signal fidelity as the supply sags. Configured as a unity-gain buffer ahead of a sigma-delta ADC or as a low-frequency active anti-aliasing filter, the 220kHz GBW comfortably supports sub-10kHz sensor channels while the dual channel integrates filter and buffer in one MSOP-8 footprint.
推荐
Low-Power Active Filters
The TLV2452AIDGKR implements Sallen-Key and multiple-feedback active filters for signals below roughly 10kHz without wasting supply current - 46uA total for both channels versus milliwatt-class standard op amps. Rail-to-rail output swing means full-scale signal handling even on 3.3V rails, and the 80dB CMRR suppresses ground noise in single-supply designs. Note the 0.11V/us slew rate limits large-signal high-frequency performance; keep corner frequencies well under 50kHz and verify settling for pulsed inputs.
推荐
ADC Input Signal Conditioning
The rail-to-rail output of the TLV2452AIDGKR swings to within 5mV of each rail at light loads, letting it drive single-supply ADC inputs across nearly the full conversion range without headroom loss. With 52nV/sqrt(Hz) noise density and 80dB CMRR, it preserves small sensor signals ahead of 12- to 16-bit converters such as the ADS131M08. The dual channels condition both a sensor buffer and an anti-aliasing pole in one package; keep source impedance low with local 100nF decoupling at the ADC reference and supply pins.
推荐
推荐产品汇总
工程参考数据： TLV2452AIDGKR ——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 | TLV2452AIDGKR-Q1 | TLV2452IDGKR | LMV932MMX/NOPB | MCP6022-E/MS |
|---|---|---|---|---|---|
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | VSSOP-8 (MSOP) - same footprint | MSOP-8 - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) |
| Gain Bandwidth Product | 220 kHz | 220 kHz | 220 kHz | ~1 MHz | ~10 MHz |
| Quiescent Current per Channel | 23 uA | 23 uA | 23 uA | ~400 uA | ~1 mA |
| Supply Voltage Range | 2.7 V to 6 V | 2.7 V to 6 V | 2.7 V to 6 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Rail-to-Rail I/O | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) | Yes (RRIO) |
| Automotive Grade (AEC-Q100) | No | Yes (Q1) | No | No | No |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C (E grade) |
关键差异点
- Ultra-low 23uA per channel quiescent current （对比 LMV932MMX/NOPB)
- Guaranteed 1.5mV maximum offset (A-grade) （对比 TLV2452IDGKR)
- Trade bandwidth for power vs cross-brand equivalents （对比 MCP6022-E/MS)
设计说明
Decouple the V+ pin with a 0.1uF ceramic capacitor placed within 2-3mm of pin 8, plus a 1uF bulk capacitor at the board entry point. Although the TLV2452 draws only 23uA per channel, its output can deliver transient drive currents that modulate the supply; poor decoupling shows up as inter-channel crosstalk in dual-channel circuits. On single-supply 3.3V rails shared with digital loads, consider an RC or LDO-filtered analog rail to preserve the 52nV/sqrt(Hz) noise performance.
The 220kHz gain-bandwidth product and 0.11V/us slew rate constrain usable circuit bandwidth. For a gain of 10, closed-loop bandwidth is roughly 22kHz; for large-signal outputs, slew limiting begins around 17kHz for a 3Vpp sine wave. Keep filter corner frequencies and gains modest, and budget phase margin in transimpedance designs by sizing the feedback capacitor: Cf approximately 1/(2*pi*Rf*fGBW driven by input capacitance). Per the TLV245x datasheet (Rev. F), capacitive load drive degrades beyond a few hundred pF without an isolation resistor.
Do not confuse the A-grade TLV2452AIDGKR with standard TLV2452IDGKR in precision designs - only the A version guarantees 1.5mV maximum offset; the standard grade is looser, so verify the exact suffix on reels. Also, the family includes shutdown variants (TLV245x family, Rev. F datasheet) - the TLV2452 itself has no shutdown pin, so pin 8 is V+, not a control pin. Verify pinout against the datasheet before migrating from single-channel TLV2451 layouts.
合规信息
RoHS compliant and lead-free per TI product page and distributor listings. Non-automotive standard part - use TLV2452AIDGKR-Q1 for AEC-Q100 qualified automotive applications.
