参数资料
型号: AD7945TQ
厂商: ANALOG DEVICES INC
元件分类: DAC
英文描述: +3.3 V/+5 V Multiplying 12-Bit DACs
中文描述: PARALLEL, WORD INPUT LOADING, 0.7 us SETTLING TIME, 12-BIT DAC, CDIP20
封装: GLASS SEALED, CERDIP-20
文件页数: 3/16页
文件大小: 329K
代理商: AD7945TQ
AD7943/AD7945/AD7948
REV. B
–11–
Typical Performance Curves
VREF – Volts
0.5
0.4
0
210
4
DNL
LSB
S
68
0.3
0.2
0.1
VDD = +5V
TA = +25 C
OP AMP = AD843
Figure 5. Differential Nonlinearity Error vs.
VREF (Normal Mode)
VREF – Volts
1.0
0.9
0
210
46
8
0.6
0.3
0.2
0.1
0.8
0.7
0.4
0.5
INL
LSB
S
VDD = +5V
TA = +25 C
OP AMP = AD843
Figure 6. Integral Nonlinearity Error vs.
VREF (Normal Mode)
INPUT CODE
0.50
0.25
–0.50
0
4095
1024
LINEARITY
ERROR
LSB
S
2048
3072
0.00
–0.25
VDD = +5V
VREF = +10V
OP AMP = AD843
TA = +25 C
Figure 7. All Codes Linearity In Normal Mode (VDD = +5 V)
|VREF – VBIAS| – Volts
6
0
0.2
1.4
0.4
INL,
DNL
LSB
S
0.6
0.8
1.0
1.2
5
4
3
2
1
VDD = +3.3V
TA = +25 C
OP AMP = AD820
Figure 8. Linearity Error vs. VREF (Biased Mode)
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