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dc1996afb

DEMO MANUAL DC1996A

DESCRIPTION

LTC2323/LTC2321

Dual 16-Bit/14-Bit/12-Bit,

5Msps/2Msps, Serial,

High Speed SAR ADCs

Demonstrationcircuit1996AfeaturestheLTC®2323family.

With up to 5Msps, these differential, dual channel, 16-bit,

serial, high speed successive approximation register

(SAR) ADCs are available in a 28-lead QFN package. The

LTC2323 family has an internal 20ppm/°C reference and

an SPI-compatible serial interface that supports CMOS

and LVDS logic. Note the demo board is configured for

CMOS operation by default; see the note under JP3 for

LVDS operation. The following text refers to the LTC2323,

but applies to all members of the family, the only differ-

ence being the sample rate and the number of bits. The

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PScope

is a trademark of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

BOARD PHOTO

DC1996A demonstrates the DC and AC performance of

the LTC2323 in conjunction with the DC890 PScope™

data collection board. Alternatively, by connecting the

DC1996A into a customer application, the performance

of the LTC2323 can be evaluated directly in that circuit.

Design files for this circuit board are available at

http://www.linear.com/demo

Figure 1. DC1996A Connection Diagram

dc1996a F02

HP8642B

BPF

DC POWER SUPPLY

HP8642B

BPF

TO PC USB PORT

DC890