DAC8734_091 Datasheet, PDF (29/41 Pages) Texas Instruments – Quad, 16-Bit, High-Accuracy, ±16V Output, Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8734
www.ti.com .................................................................................................................................................. SBAS465A – MAY 2009 – REVISED SEPTEMBER 2009
APPLICATION INFORMATION
BASIC OPERATION
The DAC8734 is a highly-integrated device with high-performance reference buffers and output buffers, greatly
reducing the printed circuit board (PCB) area and cost. On-chip reference buffers eliminate the need for a
negative external reference. Configurable on-chip output buffers support four different output modes. Figure 44
shows a basic application for the DAC8734.
CS
SCLK
SDI
SDO
LDAC
RST
10kW
10kW
1 NC
2 CS
3 SCLK
4 SDI
5 SDO
6 LDAC
7 RST
8 GPIO-0
9 GPIO-1
10 UNI/BIP-A
11 DGND
12 NC
0.1mF
10mF
+
0.1mF
10mF
+
DAC8734
NC 36
AV_DD 35
V_MON 34
AV_SS 33
REFGND-B 32
REF-B 31
REF-A 30
REFGND-A 29
AV_SS 28
AGND 27
AV_DD 26
NC 25
0.1mF ₊ 10mF
0.1mF ₊ 10mF
0.1mF
0.1mF
+ ^10mF
+ ^10mF
V_MON
REF-B
REF-A
AV_SS
AV_DD
NOTES: AV_DD = +15V, AV_SS = -15V, DV_DD = +5V, IOV_DD = +1.8 to +5V, REF-A = +5V, and REF-B = +2.5V.
The gain bits in the Command Register are: GAIN-0 = ‘0’, GAIN-1 = ‘1’, GAIN-2 = ‘0’, and GAIN-3 = ‘1’.
The DACs are set to the following gains: DAC-0 = x2, DAC-1 = x4, DAC-2 = x2, and DAC-3 = x4.
The output ranges are: V_OUT-0 = -5V to +5V
V_OUT-1 = -10V to +10V,
V_OUT-2 = 0V to +5V,
V_OUT-3 = 0V to +10V.
Figure 44. Basic Application Example
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): DAC8734
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