LTC2333-18 Series

Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-PCommon Mode Range

Catalog

Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-PCommon Mode Range

Part	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Sampling Rate (Per Second)	Data Interface	Supplier Device Package	Reference Type	Input Type	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Architecture	Package / Case	Ratio - S/H:ADC	Features	Number of Inputs	Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Number of A/D Converters
Analog Devices LTC2333CLX-18#PBF	5.25 V	4.75 V	Surface Mount	800k	LVDS - Serial	48-LQFP (7x7)	External Internal	Differential	38 V	7.5 V	SAR	48-LQFP	0:1	Simultaneous Sampling	8	MUX-ADC	70 °C	0 °C	1

Catalog

Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-PCommon Mode Range

Key Features

• Eight Buffered Multiplexed Channels

• 800ksps Throughput

• 500pA/12nA Maximum Input Leakage at 85°C/125°C

• ±3LSB INL (Maximum ±10.24V Range)

• Guaranteed 18-Bit, No Missing Codes

• Differential, Wide Common Mode Range Inputs

• 8-Channel Multiplexer with SoftSpan Input Ranges:±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V

• ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V

• ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V

• 96.4dB Single-Conversion SNR (Typical)

• −110dB THD (Typical) at fIN= 2kHz

• 128dB CMRR, –125dB Active Crosstalk (Typical)

• 420ns Step Response (Full-Scale, 0.005% Settling)

• Rail-to-Rail Input Overdrive Tolerance

• Programmable Sequencer with No-Latency Control

• Integrated Reference and Buffer (4.096V)

• SPI CMOS (1.8V to 5V) and LVDS Serial I/O

• 268mW Power Dissipation (Typical)

• 48-Lead (7mm × 7mm) LQFP Package

Description

The LTC2333-18 is an 18-bit, low noise 8-channel multiplexed successive approximation register (SAR) ADC with buffered differential, wide common mode range picoamp inputs. Operating from a 5V low voltage supply, flexible high voltage supplies, and using the internal reference and buffer, this SoftSpan™ADC can be configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals on any channel. Alternately, the ADC may be programmed to cycle through a sequence of channels and ranges without further user intervention.The integrated picoamp-input analog buffers, wide input common mode range and 128dB CMRR of the LTC2333- 18 allow the ADC to directly digitize a variety of signals using minimal board space and power. This input signal flexibility, combined with ±3LSB INL, no missing codes at 18 bits, and 96.4dB SNR, makes the LTC2333-18 an ideal choice for many high voltage applications requiring wide dynamic range.The LTC2333-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.ApplicationsDirect Sensor MeasurementProgrammable Logic ControllersIndustrial Process ControlTest and Measurement