Product Summary

The LTC2981AIGN-1#PBF is an I2C Programmable Precision Reference with EEPROM. It combines an ultralow drift reference, a precise low drift 8-bit adjustment DAC, a low drift, low noise buffer and internal EEPROM. While external pins or internal register bits set the central output voltage, an 8-bit I2C DAC adjusts this mid-scale output with a selectable, relative ±1% or ±10% range. Both mid-scale output voltage level and DAC settings can be stored in EEPROM and restored upon power-up. The LTC2981AIGN-1#PBF accepts input voltages between 2.9V and 15V. Both references offer extremely good accuracy over temperature with 10ppm/℃ drift. The applications of the LTC2981AIGN-1#PBF include Precision Reference, Instrumentation and Process Control, Data Acquisition Systems, Test Equipment, Power Supply Margining, Medical Equipment.

Parametrics

LTC2981AIGN-1#PBF absolute maximum ratings: (1)Two Adjustment Ranges: ±1% or ±10%; (2)Wide Input Voltage Range: 2.9V to 15V; (3)Low Dropout: 400mV; (4)0.1Hz to 10Hz Noise: 10ppmP-P; (5)Load Regulation: 20ppm/mA with ±5mA Drive; (6)400kHz I2C Interface (SMBus Compatible).

Features

LTC2981AIGN-1#PBF features: (1)High Accuracy:±0.05%; (2)Drift:10ppm/℃; (3)16 Output Voltage Levels (LTC2981); (4)8-Bit Relative Adjustment DAC; (5)Internal EEPROM; (6)16-Pin Plastic SSOP Package.

Diagrams

LTC2981AIGN-1#PBF Pin Configuration

LTC201A
LTC201A

Other


Data Sheet

Negotiable 
LTC201ACN
LTC201ACN


IC SWITCH QUAD SPST 16DIP

Data Sheet

0-2725: $1.41
LTC201ACN#PBF
LTC201ACN#PBF


IC SWITCH QUAD SPST 16DIP

Data Sheet

0-150: $1.41
LTC201ACS
LTC201ACS


IC SWITCH QUAD SPST 16SOIC

Data Sheet

0-2400: $1.68
LTC201ACS#PBF
LTC201ACS#PBF


IC SWITCH QUAD SPST 16SOIC

Data Sheet

0-1: $3.20
1-25: $2.12
25-100: $1.68
LTC201ACS#TR
LTC201ACS#TR


IC SWITCH QUAD SPST 16SOIC

Data Sheet

0-2500: $1.71