3-8

FIGURE 18. SPURIOUS FREE DYNAMIC RANGE = 71.16dBc

FIGURE 19. SPURIOUS FREE DYNAMIC RANGE = 70.5dBc

FIGURE 20. SPURIOUS FREE DYNAMIC RANGE = 70dBc

Pin Descriptions

PIN NUMBER

PIN NAME

PIN DESCRIPTION

1-12

D11 (MSB) thru

D0 (LSB)

Digital Data Bit 11, the Most Significant Bit thru Digital Data Bit 0, the Least Significant Bit.

15

CLK

Data Clock Pin DC to 100 MSPS.

13, 14

NC

No Connect.

16

Digital Logic Supply +5V.

17, 28

DGND

Digital Ground.

18

-5.2V Logic supply.

23

27

AGND

Analog Ground supply current return pin.

19

ARTN

Analog Signal Return for the R/2R ladder.

21

Current Output Pin.

20

Complementary Current Output Pin.

22

-5.2V Analog Supply.

24

CTRL IN

Input to the current source base rail. Typically connected to CTRL OUT and a 0.1

external control of the current sources.

25

CTRL OUT

Control Amplifier Out. Provides precision control of the current sources when connected to CTRL IN such that

26

REF OUT

-1.23V (Typ) bandgap reference voltage output. Can sink up to 125

µA or be overdriven by an external

reference capable of delivering up to 2mA.

∆MKR -71.16dB

2.99MHz

10dB/

ATTEN 20dB

RL -10.0dBm

C

S

STOP FREQUENCY 20MHz

START FREQUENCY 500kHz

∆MKR -70.50dB

1.98MHz

10dB/

ATTEN 20dB

RL -10.0dBm

STOP FREQUENCY 40MHz

START FREQUENCY 500kHz

C

S

∆MKR -70.00dB

4.13MHz

10dB/

ATTEN 20dB

RL -10.0dBm

C

S

STOP FREQUENCY 50MHz

START FREQUENCY 500kHz

HI5731