LMP91000SD/NOPB
ObsoleteCONFIGURABLE AFE POTENTIOSTAT FOR LOW-POWER ELECTROCHEMICAL CELL MONITORING
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LMP91000SD/NOPB
ObsoleteCONFIGURABLE AFE POTENTIOSTAT FOR LOW-POWER ELECTROCHEMICAL CELL MONITORING
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Technical Specifications
Parameters and characteristics for this part
| Specification | LMP91000SD/NOPB |
|---|---|
| Mounting Type | Surface Mount |
| Number of Bits | 8 |
| Number of Channels | 1 |
| Package / Case | 14-WFDFN Exposed Pad |
| Supplier Device Package | 14-WSON (4x4) |
| Voltage - Supply, Analog [Max] | 5.25 V |
| Voltage - Supply, Analog [Min] | 2.7 V |
| Voltage - Supply, Digital [Max] | 5.25 V |
| Voltage - Supply, Digital [Min] | 2.7 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.06 | |
| 10 | $ 4.09 | |||
| 25 | $ 3.58 | |||
| 100 | $ 3.00 | |||
| 250 | $ 2.72 | |||
| 500 | $ 2.55 | |||
| Digi-Reel® | 1 | $ 6.06 | ||
| 10 | $ 4.09 | |||
| 25 | $ 3.58 | |||
| 100 | $ 3.00 | |||
| 250 | $ 2.72 | |||
| 500 | $ 2.55 | |||
| Tape & Reel (TR) | 1000 | $ 2.52 | ||
| 2000 | $ 2.39 | |||
| Texas Instruments | SMALL T&R | 1 | $ 3.28 | |
| 100 | $ 2.67 | |||
| 250 | $ 2.10 | |||
| 1000 | $ 1.78 | |||
Description
General part information
LMP91000 Series
The LMP91000 is a programmable analog front-end (AFE) for use in micro-power electrochemical sensing applications. It provides a complete signal path solution between a sensor and a microcontroller that generates an output voltage proportional to the cell current. The LMP91000’s programmability enables it to support multiple electrochemical sensors such as 3-lead toxic gas sensors and 2-lead galvanic cell sensors with a single design as opposed to the multiple discrete solutions. The LMP91000 supports gas sensitivities over a range of 0.5 nA/ppm to 9500 nA/ppm. It also allows for an easy conversion of current ranges from 5 µA to 750 µA full scale.
The LMP91000’s adjustable cell bias and transimpedance amplifier (TIA) gain are programmable through the I2C interface. The I2C interface can also be used for sensor diagnostics. An integrated temperature sensor can be read by the user through the VOUT pin and used to provide additional signal correction in the µC or monitored to verify temperature conditions at the sensor.
The LMP91000 is optimized for micro-power applications and operates over a voltage range of 2.7 to 5.25 V. The total current consumption can be less than 10 µA. Further power savings are possible by switching off the TIA amplifier and shorting the reference electrode to the working electrode with an internal switch.
Documents
Technical documentation and resources
