LTC2348-18
PRODUCTIONOctal, 18-Bit, 200ksps Differential ±10.24V Input SoftSpan ADC with Wide Input Common Mode Range
- Part Models
- 3
- 1ku List Price
- Starting From $27.49
Part Details
- 200ksps per Channel Throughput
- Eight Simultaneous Sampling Channels
- ±3LSB INL (Maximum, ±10.24V Range)
- Guaranteed 18-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
- 96.7dB 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
The LTC2348-18 is an 18-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 LTC2348-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±3LSB INL, no missing codes at 18 bits, and 96.7dB SNR, makes the LTC2348-18 an ideal choice for many high voltage applications requiring wide dynamic range.
The LTC2348-18 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.
Applications
- Programmable Logic Controllers
- Industrial Process Control
- Power Line Monitoring
- Test and Measurement
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Application Note 1
Design Note 1
Technical Articles 1
Video 2
Product Selector Card 3
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC2348CLX-18#PBF | 48-Lead LQFP (7mm x 7mm) | ||
| LTC2348HLX-18#PBF | 48-Lead LQFP (7mm x 7mm) | ||
| LTC2348ILX-18#PBF | 48-Lead LQFP (7mm x 7mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 6, 2021 - 21_0046 Transfer of LQFP and LQFP_EP from AEM to AET |
||
| LTC2348CLX-18#PBF | PRODUCTION | |
| LTC2348HLX-18#PBF | PRODUCTION | |
| LTC2348ILX-18#PBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 2
LinearLab Tools
A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| High Speed Op Amps (Bandwidth ≥ 50MHz) 1 | ||
| LT1469 | RECOMMENDED FOR NEW DESIGNS | Dual 90MHz, 22V/µs 16-Bit Accurate Operational Amplifier |
| Low Power Op Amps (≤ 1mA/amp) 1 | ||
| LT1355 | PRODUCTION | Dual 12MHz, 400V/µs Op Amps |
| Multiplexed A/D Converters 1 | ||
| LTC2373-18 | PRODUCTION | 18-Bit, 1Msps, 8-Channel SAR ADC with 100dB SNR |
| Series Voltage References 1 | ||
| LTC6655 | PRODUCTION | 0.25ppm Noise, Low Drift Precision References |
| SPI Isolators 1 | ||
| LTM2893 | PRODUCTION | 100MHz Isolated ADC Serial Interface |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC2358-18 | PRODUCTION | Buffered Octal, 18-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range |
Tools & Simulations
Linduino 3
IBIS Model 1
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Evaluation Kits
LTC2348-18 Demo Board | Octal, Simultaneous, 18-Bit, 200ksps SAR ADC (req DC590, DC2026 or DC890)
Resources
Software
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