LTC1859 Series

8-Channel, 16-Bit, 100ksps SoftSpan A/D Converters with Shutdown

Catalog

8-Channel, 16-Bit, 100ksps SoftSpan A/D Converters with Shutdown

Part	Ratio - S/H:ADC	Operating Temperature [Max]	Operating Temperature [Min]	Data Interface	Supplier Device Package	Voltage - Supply, Digital	Package / Case [custom]	Package / Case	Package / Case [custom]	Reference Type	Number of A/D Converters	Input Type	Number of Bits	Sampling Rate (Per Second)	Architecture	Configuration	Mounting Type	Voltage - Supply, Analog	Number of Inputs
Analog Devices LTC1859CG#TRPBF	1:1	70 °C	0 °C	SPI	28-SSOP	5 V	0.209 in	28-SSOP	5.3 mm	External Internal	1	Differential Single Ended	16	100k	SAR	MUX-S/H-ADC	Surface Mount	5 V	8

Catalog

8-Channel, 16-Bit, 100ksps SoftSpan A/D Converters with Shutdown

Key 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/MICROWIRE™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

Description

The LTC1857/LTC1858/LTC1859 are 8-channel, low power, 12-/14-/16-bit, 100ksps, analog-to-digital converters (ADCs). These SoftSpan™ADCs can be software programmed for 0V to 5V, 0V to 10V, ±5V or ±10V input spans and operate from a single 5V supply. The 8-channel multiplexer can be programmed for single-ended inputs or pairs of differential inputs or combinations of both. In addition, all channels are fault protected to ±25V. A fault condition on any channel will not affect the conversion result of the selected channel.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.ApplicationsIndustrial Process ControlMultiplexed Data Acquisition SystemsHigh Speed Data Acquisition for PCsDigital Signal Processing