LTC1855 Series

8-Channel, ±10V Input 14-Bit, 100ksps ADC Converter with Shutdown

Catalog

8-Channel, ±10V Input 14-Bit, 100ksps ADC Converter with Shutdown

Part	Mounting Type	Architecture	Reference Type	Operating Temperature [Max]	Operating Temperature [Min]	Data Interface	Configuration	Number of A/D Converters	Number of Inputs	Number of Bits	Input Type	Voltage - Supply, Analog	Sampling Rate (Per Second)	Supplier Device Package	Package / Case [custom]	Package / Case	Package / Case [custom]	Ratio - S/H:ADC	Voltage - Supply, Digital
Analog Devices LTC1855IG#TRPBF	Surface Mount	SAR	External Internal	85 °C	-40 °C	SPI	MUX-S/H-ADC	1	8	14	Differential Single Ended	5 V	100k	28-SSOP	0.209 in	28-SSOP	5.3 mm	1:1	5 V
Analog Devices LTC1855IG#PBF	Surface Mount	SAR	External Internal	85 °C	-40 °C	SPI	MUX-S/H-ADC	1	8	14	Differential Single Ended	5 V	100k	28-SSOP	0.209 in	28-SSOP	5.3 mm	1:1	5 V

Catalog

8-Channel, ±10V Input 14-Bit, 100ksps ADC Converter with Shutdown

Key Features

• Single 5V Supply

• Sample Rate: 100ksps

• 8-Channel Multiplexer with ±30V Protection

• ±10V Bipolar Input RangeSingle Ended or Differential

• Single Ended or Differential

• ±3LSB INL for the LTC1856,±1.5LSB INL for the LTC1855,±1LSB INL for the LTC1854

• Power Dissipation: 40mW (Typ)

• SPI/MICROWIRE™Compatible Serial I/O

• Power Shutdown: Nap and Sleep

• SINAD: 87dB (LTC1856)

• Operates with Internal or External Reference

• Internal Synchronized Clock

• 28-Pin SSOP Package

Description

The LTC1854/LTC1855/LTC1856 are 8-channel, low power, 12-/14-/16-bit, 100ksps, analog-to-digital converters (ADCs). These ADCs operate from a single 5V supply and the 8-channel multiplexer can be programmed for single-ended inputs, pairs of differential inputs, or combinations of both. In addition, all channels are fault protected to ±30V. A fault condition on any channel will not affect the conversion result of the selected channel.An onboard precision reference minimizes external components. Power dissipation is 40mW at 100ksps and lower in two power shutdown modes (27.5mW in Nap mode and 40mW in Sleep mode.) DC specifications include ±3LSB INL for the LTC1856, ±1.5LSB INL for the LTC1855 and ±1LSB for the LTC1854.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