TLV2452AIDGKR-Q1 - Dual 220kHz RRIO Op Amp, 23uA | TI
料号： TLV2452AIDGKR-Q1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.1 | $1.10 |
| 10 | $0.99 | $9.90 |
| 100 | $0.82 | $82.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.55 | $550.00 |
TLV2452AIDGKR-Q1 概述
A rail-to-rail input/output operational amplifier is a type of precision op amp within the broader analog amplifier family whose input common-mode range and output voltage swing extend to within millivolts of both supply rails. This maximizes dynamic range in low-voltage, single-supply systems where signal levels approach the rails, a capability conventional op amps cannot provide.
Key features include the industry-leading 23 uA/channel quiescent current (far below competitive devices at similar bandwidth), 220 kHz gain-bandwidth product, rail-to-rail input and output (RRIO) operation, and high output drive capability for its power class. The dual-channel integration saves board space and reduces BOM count in multi-channel signal chains.
The TLV245x family achieves its performance point through a trimmed CMOS input stage combined with rail-to-rail output buffer architecture, providing stable gain-bandwidth across the full load range. The related TLV245x family also offers shutdown variants (TLV2453/2455) for further average-power reduction in duty-cycled systems.
Typical automotive and industrial applications include battery monitoring and current sensing front ends, low-power sensor signal conditioning, portable instrumentation, and microcontroller ADC driver stages, where micropower consumption directly extends battery life and reduces self-heating.
Design consideration: because gain-bandwidth is 220 kHz, keep closed-loop gains moderate for signal bandwidths above a few tens of kHz; with 23 uA supply current, output current drive is limited, so avoid heavy capacitive loads without isolation resistors.
直接替换替代料： TLV2452AIDGKR-Q1 ——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-Q1 （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
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.55 / 个
查看数据手册 →TLV2452QDGKRQ1
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV9152IDGKR
⚡ 相同封装✓ 有现货
$0.38 / 个
查看数据手册 →MCP6442-E/MC
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV2452AIDGKR-Q1 最大额定值与电气特性
| Number of Channels | 2 (Dual) |
| Gain-Bandwidth Product | 220 kHz |
| Quiescent Current per Channel | 23 uA |
| Input/Output Type | Rail-to-Rail Input/Output (RRIO) |
| Automotive Qualification | AEC-Q100 Grade 1 |
| 工作温度范围 | -40C to +125C |
| 封装 | VSSOP-8 (DGK) |
| 安装类型 | Surface Mount |
| Shutdown Feature | No (TLV2452 variant) |
| Marking Code | ABJ (family marking per Jotrin) |
| RoHS 状态 | Compliant |
TLV2452AIDGKR-Q1 引脚配置
| 引脚 1 | OUT A — Channel A 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 / ground |
| 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 output |
| 引脚 8 | V+ — Positive supply |
典型应用
TLV2452AIDGKR-Q1 适用于 6 应用s: Automotive Battery Monitoring, Low-Power Sensor Signal Conditioning, Portable and Wearable Instrumentation, Automotive 12V Rail Sensing and Supervision, MCU ADC Driver and Filtering Stage, Industrial 4-20mA Transmitter Loops.
Automotive Battery Monitoring
The TLV2452AIDGKR-Q1's 23 uA per channel quiescent current minimizes standby drain in always-on automotive battery-sense front ends, while AEC-Q100 Grade 1 qualification (-40C to +125C) guarantees operation across under-hood and cabin environments. Its rail-to-rail input allows sensing signals close to the battery divider rail and the RRIO output maximizes ADC input range on 5 V or 3.3 V supplies. With 220 kHz of GBW, one channel can amplify a shunt voltage while the second buffers the reference, all within the single VSSOP-8 package. Placed directly after a resistor divider with 100 nF bypassing, the amplifier adds negligible self-heating and drift compared with conventional op amps drawing hundreds of uA.
推荐
Low-Power Sensor Signal Conditioning
For battery-powered and energy-harvesting sensor nodes, the TLV2452AIDGKR-Q1's 23 uA/channel consumption directly extends battery life: a two-channel conditioning chain draws under 50 uA total, orders of magnitude less than general-purpose amplifiers. Rail-to-rail inputs handle bridge, thermistor, or photodiode signals that swing near the supply rails, and the 220 kHz GBW supports filtering and gain stages up to the tens of kHz range. The AEC-Q100 qualification additionally allows the same circuit to be reused across automotive sensor modules, consolidating the BOM. Use the second channel as an active anti-aliasing filter ahead of a low-power SAR ADC for a complete micropower analog front end.
推荐
Portable and Wearable Instrumentation
In handheld meters, wearables, and portable diagnostics, every uA of quiescent current reduces run time; the TLV2452AIDGKR-Q1's 46 uA total for two channels keeps analog front-end overhead negligible next to the microcontroller budget. The 2.7 V-class low-voltage operation supports single-cell Li-Ion and 3 V coin-cell systems, and rail-to-rail I/O preserves full dynamic range as the battery discharges toward end-of-life voltage. The 220 kHz GBW is ample for physiological signal amplification and sensor filtering up to tens of kHz. Its small VSSOP-8 footprint also suits space-constrained wearable PCBs, and shutdown-family variants (TLV2453/2455) offer an upgrade path for further duty-cycled power savings.
推荐
Automotive 12V Rail Sensing and Supervision
Monitoring the 12 V automotive battery rail with a 5 V-supplied amplifier requires careful input scaling; the TLV2452AIDGKR-Q1's rail-to-rail input tolerates divider outputs near the 5 V rail without headroom loss, and its AEC-Q100 qualification addresses the -40C to +125C cabin and engine-bay profile. One channel can buffer a divided battery voltage while the second provides an RC-filtered fault threshold comparison for the microcontroller. At 23 uA/channel, the supervision circuit imposes negligible load during key-off sleep, an important consideration for vehicle quiescent-current specifications. The 220 kHz GBW supports kHz-class load-dump transient monitoring when combined with appropriate input filtering.
推荐
MCU ADC Driver and Filtering Stage
The TLV2452AIDGKR-Q1 serves as a low-cost dual-function stage ahead of microcontroller ADCs: one channel amplifies the sensor signal to match ADC input range, the second implements a Sallen-Key or multiple-feedback anti-aliasing filter. With 220 kHz of GBW, gains up to 20x remain practical for signal bandwidths of a few kHz to 10 kHz, adequate for most industrial sensing. Rail-to-rail output swing maximizes the effective number of bits by using the full ADC range on 3.3 V supplies. Designers should verify the 23 uA-class output drive against ADC sampling-capacitor charge demand and add an isolation resistor if sampling glitches cause settling errors.
推荐
Industrial 4-20mA Transmitter Loops
Two-wire 4-20 mA current-loop transmitters are extremely power constrained because the entire circuit must operate within the 4 mA loop floor; the TLV2452AIDGKR-Q1's 23 uA/channel consumption leaves generous budget for the regulator, ADC, and sensing elements. Rail-to-rail output drive allows the output stage to reach the compliance limits across the 12 V to 36 V loop span, and the AEC-Q100-adjacent robustness suits harsh factory-floor temperature profiles. One channel amplifies the shunt sense while the second drives the loop control transistor. The 220 kHz GBW comfortably supports the few-hundred-Hz signal bandwidth typical of process-loop transmitters with margin for loop stability compensation.
推荐
推荐产品汇总
工程参考数据： TLV2452AIDGKR-Q1 ——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 | TLV2452QDGKRQ1 | TLV9152IDGKR | MCP6442-E/MC |
|---|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Channels | 2 | 2 | 2 | 2 | 2 |
| Automotive Grade | Yes (AEC-Q100) | No | Yes (AEC-Q100) | No | No (check AEC variant) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Rail-to-Rail I/O | RRIO | RRIO | RRIO | RRIO | RRIO |
关键差异点
- AEC-Q100 automotive qualification （对比 TLV2452AIDGKR)
- Industry-leading uA-to-bandwidth ratio （对比 MCP6442-E/MC)
- Lower power than general-purpose replacement （对比 TLV9152IDGKR)
设计说明
Budget the analog supply carefully: at 23 uA per channel the TLV2452AIDGKR-Q1 is negligible on a loaded rail but dominant in sleep-mode power calculations. If the system sleeps below 10 uA, consider the TLV2453/2455 shutdown variants or power the amplifier rail from a load switch such as TPS22997 so the op amp is fully off between measurements.
Keep input traces short and guard high-impedance nodes with a ring driven at the source potential to limit leakage; at micropower bias currents, even 10 nA of PCB leakage causes visible offset. Place 100 nF ceramic decoupling within 2 mm of pin 8 (V+) and pin 4 (V-), and use the standard dual-op-amp pinout shown in the TI datasheet when laying out the VSSOP-8 (DGK) land pattern.
Do not assume automotive qualification transfers between ordering suffixes: only the -Q1 part is AEC-Q100 qualified. Also, 220 kHz GBW means a gain-of-10 stage has only ~22 kHz of bandwidth; adding capacitive loads above ~100 pF directly on the output can degrade phase margin - isolate with a 50-100 ohm resistor when driving long cables or ADC sampling capacitors.
合规信息
AEC-Q100 qualification implied by -Q1 suffix and TI automotive product line. RoHS/lead-free status per standard TI catalog practice; verify on TI.com product page for this exact ordering suffix.
