TLV2888IDGKR-Q1 - Dual 36V 14MHz Zero-Drift Op Amp | TI
MPN： TLV2888IDGKR-Q1 ✓ 啟用中TLV2888IDGKR-Q1 概覽
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.
直接替換替代品，適用於 TLV2888IDGKR-Q1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLV2888IDGKR-Q1 （相同外形與佔位） — 差異在於 Amplifier Type, Operating Temperature, Package.
TLV2888DGKR
✅ 直接替換📋 參考替代品（不在目錄中）
TLV2452AIDGKR-Q1
⚡ 相同封裝 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLV9152IDGKR
⚡ 相同封裝 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MCP6V02-E/MS
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV2888IDGKR-Q1 最大額定值與電氣特性
| 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 |
| 輸出類型 | Rail-to-Rail |
| 工作溫度 | -40C to +125C (I grade, AEC-Q100 Q1) |
| 封裝 | VSSOP-8 (DGK) |
| 安裝類型 | Surface Mount |
| Automotive Qualification | AEC-Q100 (Q1) |
| RoHS 狀態 | Compliant |
TLV2888IDGKR-Q1 腳位配置
| 腳位 1 | OUT A — Channel A output |
| 腳位 2 | IN A- — Channel A inverting input |
| 腳位 3 | IN A+ — Channel A non-inverting input |
| 腳位 4 | V- — Negative supply / ground |
| 腳位 5 | IN B+ — Channel B non-inverting input |
| 腳位 6 | IN B- — Channel B inverting input |
| 腳位 7 | OUT B — Channel B output |
| 腳位 8 | V+ — Positive supply |
典型應用
TLV2888IDGKR-Q1 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 TLV2888IDGKR-Q1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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) |
主要差異化特點
- 14MHz GBW with microvolt offset in one part (對比TLV2452AIDGKR-Q1)
- Mux-friendly input stage (對比MCP6V02-E/MS)
- AEC-Q100 automotive qualification at 36V (對比TLV2888DGKR)
設計說明
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.
合規資訊
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.
