AD7839 Analog Devices, AD7839 Datasheet - Page 12

• Manufacturer Part Number: AD7839
• Description: Octal 13-Bit, Parallel Input, Voltage-Output D/A Converter
• Manufacturer: Analog Devices

Specifications of AD7839

• Resolution (bits): 13bit
• Dac Update Rate: 33kSPS
• Dac Settling Time: 30µs
• Max Pos Supply (v): +15.75V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Par

AD7839
these DACs can be operated with supplies of 0 V and –5 V, with
the V
–5 V. Now these can be used to provide the negative reference
voltages for the V
DD
pin connected to 0 V and the GND pin connected to
REF
CONTROLLER
(–) inputs on the AD7839. However, the
ADDR BUS
DATA BUS
SDATA
SCLK
Figure 22. Programmable Reference Generation for the AD7839
LOGIC LEVEL
SHIFT
DECODER
ADDR
0.037 (0.94)
0.025 (0.64)
0.040 (1.02)
0.032 (0.81)
SEATING
*ADDITIONAL PINS OMITTED FOR CLARITY
PLANE
FSIN/CS
FSIN/CS
0.096 (2.44)
0.083 (2.11)
0.077 (1.96)
SCLK
SCLK
Dimensions shown in inches and (mm).
D IN
D IN
MAX
OUTLINE DIMENSIONS
44-Lead MQFP (S-44)
8/10-BIT
8/10-BIT
DAC
DAC
0.8°
0.040 (1.02)
0.032 (0.81)
8°
–12–
GND
GND
+5V
V
V
5V
DD
DD
34
44
digital signals driving the DACs need to be level-shifted from
the 0 V to +5 V range to the –5 V to 0 V range. Figure 22 shows
a typical application circuit to provide programmable reference
capabilities for the AD7839.
33
1
0.033 (0.84)
0.029 (0.74)
0.548 (13.925)
0.546 (13.875)
0.398 (10.11)
(PINS DOWN)
0.390 (9.91)
TOP VIEW
0V TO
0V TO +5V
0.016 (0.41)
0.012 (0.30)
5V
23
11
V
V
DATA BUS
REF
REF
22
12
( )AB
(+)AB
AD7839*
A0, A1, A2
GND
V
V
OUT
OUT
A
B
V
V
OUT
OUT
A
B
REV. 0