TLV2888IDGKR-Q1 - Dual 36V 14MHz Zero-Drift Op Amp | TI
料号： TLV2888IDGKR-Q1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
TLV2888IDGKR-Q1 概述
A zero-drift operational amplifier is a precision amplifier architecture that periodically self-corrects its input offset voltage using chopper stabilization or auto-zero techniques. Within the amplifier hierarchy, it sits under operational amplifiers, precision amplifiers, and analog signal-conditioning ICs, delivering DC accuracy that conventional CMOS or bipolar op amps cannot achieve without trimming.
Key features include a maximum input offset voltage of only 15uV, a maximum offset drift of 0.05uV/C over the wide temperature range, rail-to-rail I/O operation, and a very high slew rate with fast settling time enabled by the wide 14MHz bandwidth. The mux-friendly input design minimizes channel-switching glitches when the amplifier follows an analog multiplexer, a common requirement in automotive battery-management and sensor-multiplexed front ends.
Architecturally, the TLV2888 uses a zero-drift CMOS core that suppresses 1/f noise and offset through internal auto-correction, combining the DC precision of chopper amplifiers with the wide AC bandwidth of a fast CMOS output stage. This makes it effective both as a precision DC amplifier and as a high-speed signal-chain buffer.
Typical applications include automotive battery management systems, current-sense amplification after a shunt (pair with INA-family monitors), multiplexed sensor front ends driving ADCs, and industrial precision signal conditioning. The 36V rating tolerates automotive load-dump-adjacent rail conditions.
Design consideration: zero-drift amplifiers generate internal chopping ripple; follow the TI datasheet layout recommendations and verify settle time when driving switched-capacitor ADC inputs. Price references are as of 2026-08-29.
直接替换替代料： TLV2888IDGKR-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： TLV2888IDGKR-Q1 （相同外形与封装尺寸） ——差异在于 Amplifier Type, Operating Temperature, Package.
快速对比工具——选择替代料号进行并排对比：
TLV2888DGKR
✅ 直接替换📋 参考替代料（不在目录中）
TLV2452AIDGKR-Q1
⚡ 相同封装 ⚠️ 规格未核验✓ 有现货
$0.55 / 个
查看数据手册 →TLV9152IDGKR
⚡ 相同封装 ⚠️ 规格未核验✓ 有现货
$0.38 / 个
查看数据手册 →MCP6V02-E/MS
⚡ 相同封装 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV2888IDGKR-Q1 最大额定值与电气特性
| Amplifier Channels | 2 (Dual) |
| Supply Voltage Range | up to 36 V |
| Gain Bandwidth Product | 14 MHz |
| Input Offset Voltage (Max) | 15 uV |
| Offset Voltage Drift (Max) | 0.05 uV/C |
| Amplifier Type | Chopper (Zero-Drift), Mux-Friendly CMOS |
| 输出类型 | Rail-to-Rail |
| 工作温度 | -40C to +125C (I grade, AEC-Q100 Q1) |
| 封装 | VSSOP-8 (DGK) |
| 安装类型 | Surface Mount |
| Automotive Qualification | AEC-Q100 (Q1) |
| RoHS 状态 | Compliant |
TLV2888IDGKR-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
TLV2888IDGKR-Q1 适用于 6 应用s: Automotive Battery Management Systems, Multiplexed Sensor Front Ends, Precision Current Sensing, Industrial Process Control Signal Conditioning, Test and Measurement Instrumentation, Automotive Position and Current Sensor Interfaces.
Automotive Battery Management Systems
The TLV2888IDGKR-Q1 fits BMS cell-monitoring front ends because its 15uV max offset and 0.05uV/C max drift preserve measurement accuracy across the -40C to +125C AEC-Q100 range, while the 36V rating tolerates elevated automotive rail conditions. Placed as a buffer or gain stage between cell-voltage taps and the monitoring ADC, its mux-friendly input handles channel-switching transients, and the 14MHz GBW settles quickly after each mux event - a quantified benefit over conventional op amps that can take microseconds to settle zero-drift errors.
推荐
Multiplexed Sensor Front Ends
In systems where an analog multiplexer shares one ADC across many sensors, the TLV2888IDGKR-Q1's mux-friendly input stage is purpose-built: it resists offset disturbance from mux charge injection and settles fast thanks to 14MHz GBW and a very high slew rate. The 15uV offset max ensures each channel is measured with equal precision regardless of switching history. Used as a post-mux buffer before the ADC, it prevents signal smearing; the trade-off is zero-drift chopping ripple that should be filtered per TI datasheet layout guidance.
推荐
Precision Current Sensing
Amplifying small shunt voltages demands microvolt-level offset: the TLV2888IDGKR-Q1's 15uV max offset corresponds to only 1.5mV equivalent error across a 100-ohm transimpedance stage, and near-zero drift keeps calibration valid over the full automotive temperature span. Its rail-to-rail I/O maximizes usable dynamic range on single 5V or 24V rails. As a gain stage following a shunt, the wide 14MHz bandwidth also captures fast load transients that slower precision amplifiers miss, supporting inrush and fault detection.
推荐
Industrial Process Control Signal Conditioning
For 4-20mA loop receivers and bridge-transducer conditioning, the TLV2888's zero-drift core removes 1/f noise and offset, so a millivolt-level sensor output can be amplified with high gain without DC error dominating. The 36V supply rating directly accommodates 24V industrial rails without pre-regulation, simplifying the analog front end. Rail-to-rail input and output preserve headroom on single-supply designs; designers should account for the 14MHz bandwidth with adequate feedback-network stability measures such as small feedback capacitors.
推荐
Test and Measurement Instrumentation
Bench instruments and data-acquisition modules benefit from the TLV2888's combination of microvolt DC accuracy and 14MHz AC bandwidth - a rare pairing, since most precision amplifiers are slow and most fast amplifiers drift. The dual channels allow differential front-end topologies in one VSSOP-8 footprint, saving board area. Fast settling after overdrive or mux switching makes it suitable for autoranging scopes and DAQ scanners; the chopping ripple must be assessed against the system noise floor in the highest-resolution modes.
推荐
Automotive Position and Current Sensor Interfaces
Resistive and Hall-based position sensors in electric power steering and throttle bodies require drift-free amplification over extreme temperatures; the TLV2888IDGKR-Q1's 0.05uV/C max drift and AEC-Q100 qualification directly address this. The rail-to-rail output uses the full ADC input range for maximum resolution of the sensor transfer curve. Its mux-friendly input also suits multi-sensor scanned architectures, and the 36V rating protects against transient rail excursions common in 12V automotive networks.
推荐
推荐产品汇总
工程参考数据： TLV2888IDGKR-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 | TLV2888DGKR | TLV2452AIDGKR-Q1 | MCP6V02-E/MS |
|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | MSOP-8 - footprint-verify |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Gain Bandwidth | 14 MHz | 14 MHz | ~3 MHz | ~2 MHz |
| Automotive AEC-Q100 | Yes (Q1) | No | Yes (Q1) | No |
| Architecture | Zero-drift (chopper), mux-friendly | Zero-drift (chopper), mux-friendly | Conventional CMOS, low power | Zero-drift (chopper) |
关键差异点
- 14MHz GBW with microvolt offset in one part （对比 TLV2452AIDGKR-Q1)
- Mux-friendly input stage （对比 MCP6V02-E/MS)
- AEC-Q100 automotive qualification at 36V （对比 TLV2888DGKR)
设计说明
Zero-drift amplifiers generate internal chopping energy that can couple into high-impedance nodes. Place the TLV2888IDGKR-Q1 close to the mux/ADC, keep input traces short and guarded, and follow TI datasheet layout recommendations: solid ground plane under the device, and a 0.1uF ceramic decoupling capacitor within 2mm of the V+ pin with an additional 1uF bulk capacitor nearby.
When driving a switched-capacitor SAR ADC, the 14MHz GBW alone does not guarantee settling - check the datasheet settling-time curves against the ADC acquisition window and add an RC charge-kickback filter if needed. Do not exceed the 36V absolute maximum supply including transients; on 24V industrial rails use a series resistor and clamp if surge is expected.
In multiplexed front ends, insert the amplifier after the mux with gain set so the output swing stays within the linear region across all sensor channels. The mux-friendly input tolerates switching charge injection, but source impedance above a few kilo-ohms still increases settling time; verify per-channel settle with the highest-impedance source in the system.
合规信息
AEC-Q100 qualified per -Q1 suffix per TI product page. RoHS/lead-free per standard TI ordering data; other fields not stated in provided data.
