DAC7553_14 datasheet(18/26 Pages) TI1

部件名	DAC7553

功能描述	12-BIT, DUAL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER

PDF	26 Pages

Scroll/Zoom	100%

制造商	TI1 [Texas Instruments]

网页	http://www.ti.com

标志

18 / 26 page

www.ti.com

Vout + VREF

R1 )

Din

4096 *

tail

(1)

DAC7553

SLAS477 – SEPTEMBER 2005

errors are not an issue for loop accuracy because

offset and gain errors could be tolerated. One

DAC7553 channel can provide the Vtail voltage, while

Fixed R1 and R2 resistors can be used to coarsely

the other DAC7553 channel can provide Vdac voltage

set the gain required in the first term of the equation.

to help generate the high-voltage outputs.

Once R2 and R1 set the gain to include some

For ±5-V operation: R1=10 k

Ω, R2 = 15 kΩ, V

tail =

minimal over-range, a DAC7553 channel could be

3.33 V, VREF= 4.096 V

used to set the required offset voltage. Residual

For ±10-V operation: R1=10 k

Ω, R2 = 39 kΩ, V

tail =

2.56 V, VREF = 4.096 V

For ±12-V operation: R1=10 k

Ω, R2 = 49 kΩ, V

tail =

2.45 V, VREF = 4.096 V

DAC7553 数据表(PDF) 18 Page - Texas Instruments