LMP92064
- Two Simultaneous Sampling 12-Bit ADCs
- Conversion Rate: 125 kSps (Minimum)
- 12-Bit Current Sense Channel
- Input-referred Offset: ±15 µV
- Common-mode Voltage Range: –0.2 V to 2 V
- Maximum Differential Input Voltage: 75 mV
- Fixed Gain: 25 V/V
- Gain Error: ±0.75% (Maximum)
- Bandwidth (–3dB): 70 kHz
- DC PSRR: 100 dB
- DC CMRR: 110 dB
- 12-Bit Voltage Channel
- INL: ±1 LSB
- Offset Error: ±2 mV (Maximum)
- Gain Error: ±0.75% (Maximum)
- Maximum Input Voltage: 2.048 V
- Bandwidth: 100 kHz
- Internal Reference
- SPI Frequency: Up to 20 MHz
- Temperature Range: –40°C to 105°C
- 16-Pin WSON Package
The LMP92064 is a precision low-side digital current sensor and voltage monitor with a digital SPI interface. This analog frontend (AFE) includes a precision current sense amplifier to measure a load current across a shunt resistor and a buffered voltage channel to measure the voltage supply of the load. The current and voltage channels are sampled simultaneously by independent 125-kSps, 12-bit ADC converters, allowing for very accurate power calculations in unidirectional sensing applications.
The LMP92064 includes an internal 2.048-V reference for the ADCs, eliminating the need of an external reference and reducing component count and board space.
A host can communicate with the LMP92064 using a four-wire SPI interface running at speeds of up to 20 MHz. The fast SPI interface lets the user take advantage of the higher bandwidth ADC to capture fast varying signals. The four-wire interface with dedicated unidirectional input and output lines also allows for an easy interface to digital isolators in applications where isolation is required.
The LMP92064 operates from a single 4.5-V to 5.5-V supply and includes a separate digital supply pin. The LMP92064 is specified over a temperature range of 40°C to 105°C, and is available in a 5-mm × 4-mm 16-Pin WSON package.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LMP92064 Precision Low-Side, 125-kSps Simultaneous Sampling, Current Sensor and Voltage Monitor With SPI datasheet (Rev. A) | PDF | HTML | 2014年 12月 29日 |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 2022年 1月 25日 | |
EVM User's guide | LMP92064EVM BoosterPack User's Guide | 2014年 1月 27日 | ||
EVM User's guide | LMP92064EVM User's Guide | 2013年 6月 11日 |
設計與開發
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CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
支援產品和硬體
產品
類比電流感測放大器
數位電源監測器
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WSON (NHR) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點