Datasheet

12-Bit Digital-to-Analog
Converter
DAC7551
Digital I/O
Current
Mirror
VSP
8
9
EF
OD
R
SET
2.5kW
SET
6
710
VIN
GND
4
5
1
0mA to 20mA
R
3
2.5kW
C
2
470nF
R
1
2kW
REGF
REGS
3V
5V
R
2
3kW
C
LOAD
R
LOAD
2
VG
IS
Q
2
(1)
Q
1
15W
15W
S
D
G
10nF
3
16-BitDigital-to-Analog
Converter
DAC8551
DigitalI/O
Current
Mirror
8
9
EF
OD
R
SET
2kW
(1.995k )W
NOTE:CalculateR forR
SET 4 SET
.paralleltoR
SET
6
7 10
VIN
GND
4
5
0mAto20mAoutput
for10mVto4096mVinput
oracodeof160bto65536b
R
3
2kW
R
4
817.2kW
R
1
2kW
REGF
REGS
3V
R
2
3kW
REF3040
4096mV
VoltageReference
1
VSP
C
2
470nF
5V
C
LOAD
R
LOAD
Load
2
VG
IS
Q
2
(1)
Q
1
15W
15W
S
D
G
10nF
3
XTR111
www.ti.com SBOS375C –NOVEMBER 2006– REVISED JUNE 2011
APPLICATION BLOCK DIAGRAMS
Figure 46. Current Using 0V to 5V Input from a 12-Bit Digital-to-Analog Converter DAC7551
Figure 47. Precision Current Output with Signal from 16-Bit DAC. Input Offset Shifted (R4) by 10mV for
Zero Adjustment Range
Copyright © 2006–2011, Texas Instruments Incorporated 19