AD7945 Analog Devices, AD7945 Datasheet - Page 11

• Manufacturer Part Number: AD7945
• Description: +3.3 V/+5 V Multiplying 12-Bit DAC With a Parallel Interface
• Manufacturer: Analog Devices

Specifications of AD7945

• Resolution (bits): 12bit
• Dac Update Rate: 1.7MSPS
• Dac Settling Time: 600ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

REV. B
Typical Performance Curves
0.5
0.4
0.3
0.2
0.1
Figure 5. Differential Nonlinearity Error vs.
V
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Figure 6. Integral Nonlinearity Error vs.
V
0
0
REF
REF
2
2
(Normal Mode)
(Normal Mode)
4
4
V
V
REF
REF
– Volts
6
– Volts
6
V
T
OP AMP = AD843
DD
A
= +25 C
V
T
OP AMP = AD843
A
= +5V
DD
8
8
= +25 C
= +5V
10
10
–11–
Figure 7. All Codes Linearity In Normal Mode (V
Figure 8. Linearity Error vs. V
–0.25
–0.50
0.50
0.25
0.00
6
5
4
3
2
1
0
0.2
0
V
V
OP AMP = AD843
T
DD
REF
A
= +25 C
= +5V
= +10V
0.4
AD7943/AD7945/AD7948
1024
0.6
|V
REF
INPUT CODE
– V
2048
0.8
BIAS
| – Volts
REF
V
T
OP AMP = AD820
DD
A
1.0
= +25 C
(Biased Mode)
= +3.3V
3072
1.2
DD
4095
1.4
= +5 V)