LTC1401 - Complete SO-8, 12-Bit, 200ksps ADC with Shutdown

The LTC1401 has three power saving modes: Nap and Sleep, through the serial interface and Shutdown by setting the SHDN pin to zero. In Nap mode, it consumes only 1.5mW of power and can wake up and convert immediately. In Sleep (Shutdown) mode, it consumes 19.5µW (13.5µW) of power typically. Upon power-up from Sleep or Shutdown mode, a reference ready (REFRDY) signal is available in the serial word to indicate that the reference has settled and the chip is ready to convert.

The 3-wire serial port allows compact and efficient data transfer to a wide range of microprocessors, microcontrollers and DSPs.

Features

Complete 12-Bit ADC with Reference in SO-8
Single Supply 3V Operation
Sample Rate: 200ksps
Power Dissipation: 15mW (Typ)
68dB S/(N + D) and ?72dB THD at 50kHz
No Missing Codes Over Temperature
Nap Mode with Instant Wake-Up: 1.5mW
Sleep Mode: 19.5µW
Shutdown Mode: 13.5µW
High Impedance Analog Input
Input Range (0.5mV/LSB): 0V to 2.048V
Internal Reference Can Be Overdriven Externally
3-Wire Interface to DSPs and Processors (SPI and MICROWIRE™ Compatible)

Typical Application

Applications

Low Power and Battery-Operated Systems
Handheld or Portable Instruments
High Speed Data Acquisition
Digital Signal Processing
Multiplexed Data Acquisition Systems
Telecommunication
Digital Radio
Spectrum Analysis

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC1401CS8#PBF	SO-8	C	$3.70	$3.15
LTC1401CS8#TRPBF	SO-8	C		$3.21
LTC1401IS8#PBF	SO-8	I	$4.40	$3.75
LTC1401IS8#TRPBF	SO-8	I		$3.81