1

dc2085afb

DEMO MANUAL DC2085

DESCRIPTION

LTC2000, LTC2000A

16-, 14-, 11-Bit, 2.5Gsps to 2.7Gsps DACs

Demonstration circuit 2085 supports the LTC®2000 and

LTC2000A, a high speed, high dynamic range family of

DACs. It was specially designed for applications that re-

quire differential DC coupled outputs. DC2085 supports

the complete family of the LTC2000 including 16, 14 and

11 bit parts. For all the variations see Table 1.

L

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

Devices, Inc. All other trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

The circuitry on the analog outputs is optimized for analog

frequencies from DC-1.08GHz.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2085

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage – DC2085

This supply must provide up to 800mA

4.8

5.0

5.2

V

Sampling Frequency (Sample Clock Frequency)

300

2500 or 2700

MHz

Sample Clock Level (Single-Ended)

Use a 50Ω Source

0

15

dBm

LVDS Inputs

Differential Input Voltage Range

Common Mode Voltage Range

±0.2

0.4

±0.6

1.8

V

V

Table 1. DC2085 Variants

DC2085 VARIANTS

PART NUMBER

RESOLUTION

MAXIMUM SAMPLE RATE

OUTPUT FREQUENCY

DC2085A-A

LTC2000-16

16-Bit

2.5Gsps

DC-1000MHz

DC2085A-B

LTC2000-14

14-Bit

2.5Gsps

DC-1000MHz

DC2085A-C

LTC2000-11

11-Bit

2.5Gsps

DC-1000MHz

DC2085A-D

LTC2000A-16

16-Bit

2.7Gsps

DC-1080MHz

DC2085A-E

LTC2000A-14

14-Bit

2.7Gsps

DC-1080MHz

DC2085A-F

LTC2000A-11

11-Bit

2.7Gsps

DC-1080MHz