LTC1857 - 8-Channel, 12-Bit, 100ksps SoftSpan A/D Converters with Shutdown

An onboard high performance sample-and-hold and precision reference minimize external components. The low 40mW power dissipation is made even more attractive with two user selectable power shutdown modes. DC specifications include ±3LSB INL for the LTC1859, ±1.5LSB INL for the LTC1858 and ±1LSB for the LTC1857.

The internal clock is trimmed for 5µs maximum conversion time and the sampling rate is guaranteed at 100ksps. A separate convert start input and data ready signal (BUSY) ease connections to FIFOs, DSPs and microprocessors.

Features

Sample Rate: 100ksps
8-Channel Multiplexer with ±25V Protection
Single 5V Supply
Software-Programmable Input Ranges: 0V to 5V, 0V to 10V, ±5V or ±10V Single Ended or Differential
±3LSB INL for the LTC1859, ±1.5LSB INL for the LTC1858, ±1LSB INL for the LTC1857
Power Dissipation: 40mW (Typ)
SPI/MICROWIRETM Compatible Serial I/O
Power Shutdown: Nap and Sleep
Signal-to-Noise Ratio: 87dB (Typ) for the LTC1859
Operates with Internal or External Reference
Internal Synchronized Clock
28-Pin SSOP Package

Typical Application

Applications

Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC1857CG#PBF	SSOP-28	C	$11.93	$8.95
LTC1857CG#TRPBF	SSOP-28	C		$9.05
LTC1857IG#PBF	SSOP-28	I	$14.33	$10.75
LTC1857IG#TRPBF	SSOP-28	I		$10.85

Demo Boards

Part Number	Description	Price
DC682A	LTC1859CG Demo Board \| 8-Channel, 16-Bit, 100ksps SoftSpan ADC (req DC2026)	$50.00

Companion Boards

Part Number	Description	Price
DC2026C	Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform	$75.00