Linear Technology: DC1783A Demo Board for LTC23xx-xx with LTC6655-5/LT6350

Kit Overview   The LTC2380LTC2380/LTC2379LTC2379/LTC2378LTC2378/LTC2377LTC2377/LTC2376LTC2376 are low power, low noise ADCs with serial outputs that can operate from a single 2.5V supply. The following text refers to the LTC2379-18LTC2379-18 but applies to all parts in the family, the only difference being the maximum sample rates and the number of bits. The LTC2379-18LTC2379-18 supports a ±5V fully differential input range with a 101dB SNR, consumes only 18mW and achieves ±2LSB INL max with no missing codes at 18-bits.   The DC1783ADC1783A demonstrates the DC and AC performance of the LTC2379-18LTC2379-18 in conjunction with the DC590 QuikEval and DC718 QuikEval-II data collection boards. Use the DC590 to demonstrate DC performance such as peak-to-peak noise and DC linearity. Use the DC718 if precise sampling rates are required or to demonstrate AC performance such as SNR, THD, SINAD and SFDR. The demonstration circuit 1783A 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 Demo Board Description DC1783A-ADC1783A-A LTC2380-16LTC2380-16 with LTC6655-5LTC6655-5/LT6350LT6350: 16-Bit, 2Msps, SAR ADC with 96dB SNR DC1783A-BDC1783A-B LTC2378-16LTC2378-16 with LTC6655-5LTC6655-5/LT6350LT6350: 16-Bit, 1Msps, SAR ADC with 97dB SNR DC1783A-CDC1783A-C LTC2377-16LTC2377-16 with LTC6655-5LTC6655-5/LT6350LT6350: 16-Bit, 500ksps, SAR ADC with 97dB SNR DC1783A-DDC1783A-D LTC2376-16LTC2376-16 with LTC6655-5LTC6655-5/LT6350LT6350: 16-Bit, 250ksps, SAR ADC with 97dB SNR DC1783A-EDC1783A-E LTC2379-18LTC2379-18 with LTC6655-5LTC6655-5/LT6350LT6350:18-Bit, 1.6Msps, SAR ADC with 101dB SNR DC1783A-FDC1783A-F LTC2378-18LTC2378-18 with LTC6655-5LTC6655-5/LT6350LT6350: 18-Bit, 1Msps, SAR ADC with 102dB SNR DC1783A-GDC1783A-G LTC2377-18LTC2377-18 with LTC6655-5LTC6655-5/LT6350LT6350:18-Bit, 500ksps, SAR ADC with 102dB SNR DC1783A-HDC1783A-H LTC2376-18LTC2376-18 with LTC6655-5LTC6655-5/LT6350LT6350:18-Bit, 250ksps, SAR ADC with 102dB SNR   Key Applications: 16-Bit and 18-Bit SAR ADC Drivers, Single-Ended to Differential Conversion, Differential Line Driver, Instrumentation and Test Equipment, Weigh Scales, Precision Battery Monitors, High Temperature Applications,Medical Imaging, High Speed Data Acquisition, Industrial Process Control, ATE.

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Linear Technology: DC1783A Demo Board for LTC23xx-xx with LTC6655-5/LT6350

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Kit Features

Features of LT6350LT6350:

• Rail-to-Rail Input and Outputs
• Fast Settling Time: 240ns, 0.01%, 8V_P-P Output Step
• 1.9nV/√Hz Input-Referred Op Amp Noise
• High Impedance Input
• -3dB Bandwidth: 33MHz
• 2.7V to 12V Supply Operation
• No External Gain Resistors Required
• 4.8mA Supply Current
• Low Power Shutdown
• Low Distortion (HD2/HD3): –102dBc/–97dBc at 100kHz, V_OUTDIFF = 4V_P-P
• Low Offset Voltage: ±400μV Max
• High DC Linearity: <±1LSB, 16-Bit, 8V_P-P
• Low Input Current Noise: 1.1pA/√Hz
• 3mm × 3mm 8-Pin DFN and 8-Lead MSOP Packages

Features of LTC6655LTC6655:

• Low Noise: 0.25ppm_P-P (0.1Hz to 10Hz)
  625nV_P-P for the LTC6655-2.5LTC6655-2.5
• Low Drift: 2ppm/°C Max
• High Accuracy: ±0.025% Max
• Fully Specified from –40°C to 125°C
• 100% Tested at –40°C, 25°C and 125°C
• Load Regulation: <10ppm/mA
• Sinks and Sources Current: ±5mA
• Low Dropout: 500mV
• Maximum Supply Voltage: 13.2V
• Low Power Shutdown: <20μA Max
• Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V, 5V
• Available in an 8-Lead MSOP Package

Features of LTC23XX-XX :

• Digital Gain Compression (DGC)
• Guaranteed Operation to 125°C
• 2.5V Supply
• Fully Differential Input Range ±V_REF
• V_REF Input Range from 2.5V to 5.1V
• No Pipeline Delay, No Cycle Latency
• 1.8V to 5V I/O Voltages
• SPI-Compatible Serial I/O with Daisy-Chain Mode
• Internal Conversion Clock
• 16-Lead MSOP and 4mm × 3mm DFN Packages

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Kit Contents

1.The Linear Technology's DC1783A-ADC1783A-A supplied with below contents:

• DC1783A-ADC1783A-A Demo Board

2.The Linear Technology's DC1783A-BDC1783A-B supplied with below contents:

• DC1783A-BDC1783A-B Demo Board

3.The Linear Technology's DC1783A-CDC1783A-C supplied with below contents:

• DC1783A-CDC1783A-C Demo Board

4.The Linear Technology's DC1783A-DDC1783A-D supplied with below contents:

• DC1783A-DDC1783A-D Demo Board

5.The Linear Technology's DC1783A-EDC1783A-E supplied with below contents:

• DC1783A-EDC1783A-E Demo Board

6.The Linear Technology's DC1783A-FDC1783A-F supplied with below contents:

• DC1783A-FDC1783A-F Demo Board

7.The Linear Technology's DC1783A-GDC1783A-G supplied with below contents:

• DC1783A-GDC1783A-G Demo Board

8.The Linear Technology's DC1783A-HDC1783A-H supplied with below contents:

• DC1783A-HDC1783A-H Demo Board

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