CS5181

DS250PP1

3

TABLE OF FIGURES

1.

Serial Port Timing (not to scale) .............................................................................. 6

2.

RESET and SYNC logic and timing. ....................................................................... 8

3.

CS5181 connection diagram for using the internal voltage reference. .................... 9

4.

CS5181 connection diagram for using an external voltage reference. .................. 10

5.

Modulator Only Mode Data RTZ Format. .............................................................. 11

6.

Circuit to Reconstruct

Return-to-Zero (RTZ) Data from SDO/SDO into Original Modulator Bitstream.... 11

7.

Magnitude versus frequency spectrum of modulator bitstream

(MCLK = 40.0 MHz). .............................................................................................. 11

8.

Expanded view of the magnitude versus frequency spectrum of modulator

bitstream (MCLK = 40 MHz). ................................................................................. 11

9.

CS5181 Digital Filter Magnitude Response (MCLK = 40 MHz) ............................. 12

10.

CS5181 Digital Filter Phase Response (MCLK = 40 MHz) ................................... 12

11.

CS5181 System Connection Diagram ................................................................... 13

12.

Single amplifier driving only AIN+, with AIN- held at a steady dc value ................ 20

13.

Performance of amplifier of Figure 11 overdriving AIN+ input to the

CS5181 at 3.8 VPP ............................................................................................... 20

14.

Performance of amplifier of Figure 11 with AIN+ driven at 2.0 VPP ...................... 20

15.

Four amplifier balanced driver. .............................................................................. 21

16.

Performance of amplifier in Figure 14 ................................................................... 21

17.

Performance of amplifier in Figure 14 ................................................................... 22

18.

CS5181 Differential Non-linearity plot. (Data taken with repeating ramp) ............ 22

19.

Histogram of DNL from Figure 17 ......................................................................... 22

20.

CS5181 Noise Histogram, 32768 samples. ......................................................... 22