Linear Technology: DC1826A Demo Board for LTC2389 18-Bit/16-Bit, 2.5Msps Low Noise, SAR ADCs with Pin-Configurable Analog Input Range

atomar — Wed, 25 Jun 2014 00:52:45 GMT

Current Revision posted to Documents by atomar on 6/25/2014 12:52:45 AM

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Kit Overview

The Linear Technology Demonstration circuit 1826A (DC1826ADC1826A) features the LTC2389 low noise, high speed successive approximation register ADC which operates from a single 5V supply. The following text refers to the LTC2389-18, but also applies to the LTC2389-16, the only difference being the number of bits. The LTC2389-18 supports pin-configurable fully differential (±4.096V), pseudo-differential unipolar (0V to 4.096V), and pseudo-differential bipolar (±2.048V) analog input ranges, allowing it to interface with multiple signal chain formats. The LTC2389-18 achieves ±2.5LSB INL (maximum), with no missing codes at 18 bits.

The DC1826ADC1826A demonstrates the performance of the LTC2389-18 in conjunction with the DC718 QuikEval™ II data collection board. The demonstration circuit 1826A is intended to demonstrate recommended grounding, component placement and selection, routing and bypassing for this ADC. Several suggested driver circuits for the analog inputs will be presented

Ordering Information:

MPN	Description
DC1826A-ADC1826A-A	Demonstration circuit 1826A for LTC2389-18 (18-Bit, 2.5Msps SAR ADC)
DC1826A-EDC1826A-E	Demonstration circuit 1826A for LTC2389-16 (16-Bit, 2.5Msps SAR ADC)

Key Applications: Medical Imaging, High Speed, Wide Dynamic Range Data Acquisition, Industrial Process Control, Instrumentation, ATE

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Technical Documents

Learning Center

Type	Description
User Manual	LTC: Demo Manual for LTC2389 18-Bit/16-Bit, 2.5Msps Low Noise SAR ADCs with Pin-Configurable Analog Input Range
Datasheet	LTC: Datasheet for LT6200/LT6200-5 LT6200-10/LT6201 165MHz, Rail-to-Rail Input and Output, 0.95nV/√Hz Low Noise, Op Amp Family
Datasheet	LTC: Datasheet for LTC2389-18 18-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 99.8dB SNR
Datasheet	LTC: Datasheet for LTC6655 - 0.25ppm Noise, Low Drift Precision Buffered Reference Family
Datasheet	LTC: Datasheet for 16-Bit, 2.5Msps SAR ADC with Pin-Configurable Analog Input Range and 96dB SNR
Selection Guide	LTC: Selection Guide for 18-Bit, 2.5Msps SAR ADC 100dB SNR
Product Brief	LTC: Product Brief for 18-Bit, 2.5Msps No Latency SAR ADC Achieves 99.8dB SNR with Flexible Analog Input Ranges
Application Note	LTC: Application Note for 775 Nanovolt Noise Measurement for A Low Noise Voltage Reference
Whitepaper	LTC: White Paper for High Speed Low Noise Op Amp Family Challenges Power and Distortion Assumptions with Rail-to-Rail Inputs and Output

Design Elements

Type	Description
Schematics	LTC: Schematic File for DC1826A
Layout	LTC: Layout File for DC1826A
BOM	LTC: BOM File for DC1826A
Application Library	LTC: Software for QuikEval II System

Video

www.youtube.com/watch

Kit Features

Key Features for LTC2389-16 - 16-Bit, 2.5Msps SAR ADC are as below:

2.5Msps Throughput Rate
±1LSB INL (Max)
Guaranteed 16-Bit, No Missing Codes
Pin-Configurable Analog Input Range:
±4.096V Fully Differential
0V to 4.096V Pseudo-Differential Unipolar
±2.048V Pseudo-Differential Bipolar
96.0dB (Fully Differential)/93.5dB (Pseudo Differential) SNR (Typ) at fIN = 2kHz
–116dB (Fully Differential)/–112dB (Pseudo Differential) THD (Typ) at fIN = 2kHz
Guaranteed Operation to 125°C
Single 5V Supply
Internal 20ppm/°C (Max) Reference
Internal Reference Buffer
162.5mW Power Dissipation at 2.5Msps
No Pipeline Delay, No Cycle Latency
1.8V to 5V I/O Voltages
Parallel and Serial I/O Interface

Key Features for LTC2389-18 - 18-Bit, 2.5Msps SAR ADC are as below:

2.5Msps Throughput Rate
±3LSB INL (Max)
Guaranteed 18-Bit, No Missing Codes
Pin-Configurable Analog Input Range:
±4.096V Fully Differential
0V to 4.096V Pseudo-Differential Unipolar
±2.048V Pseudo-Differential Bipolar
99.8dB (Fully Differential)/95.2dB (Pseudo Differential) SNR (Typ) at fIN = 2kHz
–116dB (Fully Differential)/–112dB (Pseudo Differential) THD (Typ) at fIN = 2kHz
Guaranteed Operation to 125°C
Single 5V Supply
Internal 20ppm/°C (Max) Reference
Internal Reference Buffer
162.5mW Power Dissipation at 2.5Msps
No Pipeline Delay, No Cycle Latency
1.8V to 5V I/O Voltages
Parallel and Serial I/O Interface

Kit Contents

1. The Linear Technology DC1826A-ADC1826A-A Demo Board supplied with below contents:

Demo Board for LTC2389-18

2. The Linear Technology DC1826A-EDC1826A-E Demo Board supplied with below contents:

Demo Board for LTC2389-16

Tags: dc1826a-a, linear-technology, ltc2389, dc1826a, dc1826a-e, ltc2389-16, ltc2389-18