DAC8564 datasheet(36/51 Pages) TI2

36 / 51 page

REFH

REF

+6V

OPA703

DAC7565

10 F

0.1 F

10kW

3-Wire

SerialInterface

OUT

GND

REF

V =

REF

4096

REF ´

R +R

V =

4096

+6V

±2.5V

-6V

OPA703

DAC7565

150nF

10kW

3-Wire

SerialInterface

OUT

GND

REFH

REF

DAC7565

SBAS412B

– FEBRUARY 2008 – REVISED MARCH 2011

www.ti.com

BIPOLAR OPERATION USING THE DAC7565

The

DAC7565

designed

for

single-supply

operation, but a bipolar output range is also possible

using the circuit in either Figure 99 or Figure 100.

The circuit shown gives an output voltage range of

±VREF. Rail-to-rail operation at the amplifier output is

achievable using an OPA703 as the output amplifier.

The output voltage for any input code can be

calculated with Equation 4:

Figure 99. Bipolar Output Range Using External

(4)

Reference at 5V

where D represents the input code in decimal

–4095).

With VREFH = 5V, R1 = R2 = 10kΩ.

(5)

This result has an output voltage range of

±5V with

0000h corresponding to a

–5V output and 0FFFh

corresponding

+5V

output,

shown

Figure 99. Similarly, using the internal reference, a

±2.5V output voltage range can be achieved, as

Figure 100 shows.

Figure 100. Bipolar Output Range Using Internal

Reference

Submit Documentation Feedback

Product Folder Link(s): DAC7565

DAC8564 Datasheet(PDF) 36 Page - Texas Instruments

DAC8564 Datasheet(HTML) 36 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51

Datasheet Download

Link URL