LTC2348-16 - Octal, 16-Bit, 200ksps Differential ±10.24V Input SoftSpan ADC with Wide Input Common Mode Range

The LTC®2348-16 is a 16-bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V low voltage supply, flexible high voltage supplies, and using the internal reference and buffer, each channel of this SoftSpan™ ADC can be independently configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals. Individual channels may also be disabled to increase throughput on the remaining channels.

The wide input common mode range and 118dB CMRR of the LTC2348-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±1LSB INL, no missing codes at 16 bits, and 94.4dB SNR, makes the LTC2348-16 an ideal choice for many high voltage applications requiring wide dynamic range.

The LTC2348-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Between one and eight lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput.

Features

200ksps per Channel Throughput
Eight Simultaneous Sampling Channels
±1LSB INL (Maximum)
Guaranteed 16-Bit, No Missing Codes
Differential, Wide Common Mode Range Inputs
Per-Channel 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
94.4dB Single-Conversion SNR (Typical)
−109dB THD (Typical) at fIN = 2kHz
118dB CMRR (Typical) at fIN = 200Hz
Rail-to-Rail Input Overdrive Tolerance
Guaranteed Operation to 125°C
Integrated Reference and Buffer (4.096V)
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
Internal Conversion Clock, No Cycle Latency
140mW Power Dissipation (Typical)
48-Lead (7mm x 7mm) LQFP Package

Typical Application

Applications

Programmable Logic Controllers
Industrial Process Control
Power Line Monitoring
Test and Measurement

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC2348CLX-16#PBF	7x7 LQFP-48	C	$24.71	$17.30
LTC2348HLX-16#PBF	7x7 LQFP-48	H	$32.64	$22.85
LTC2348ILX-16#PBF	7x7 LQFP-48	I	$28.43	$19.90

Demo Boards


Part Number	Description	Price
DC2094A-D	LTC2348-16 Demo Board \| Octal, 16-Bit, 200ksps Simultaneous Sampling SAR ADC (req DC590, DC2026 or DC890)	$150.00

**Companion Boards**
Part Number	Description	Price
DC2026C	Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform	$75.00
DC590B	Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards	$50.00
DC890B	USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS)	$300.00