AD7945BR Analog Devices Inc, AD7945BR Datasheet - Page 11

• Manufacturer Part Number: AD7945BR
• Description: DAC 1-CH R-2R 12-Bit 20-Pin SOIC W
• Manufacturer: Analog Devices Inc

Specifications of AD7945BR

• Package: 20SOIC W
• Resolution: 12 Bit
• Conversion Rate: 1.7 MSPS
• Architecture: R-2R
• Digital Interface Type: Parallel
• Number Of Outputs Per Chip: 1
• Output Type: Current
• Full Scale Error: ±2 LSB
• Integral Nonlinearity Error: ±0.5 LSB
• Maximum Settling Time: 0.6(Typ) us
• Rohs Status: RoHS non-compliant
• Settling Time: 600ns
• Number Of Bits: 12
• Data Interface: Parallel
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 25µW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Number Of Channels: 1
• Interface Type: Parallel
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: SOIC W
• Lead Free Status / Rohs Status: Not Compliant

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)