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: 4/16页
文件大小: 329K
代理商: AD7945TQ
AD7943/AD7945/AD7948
REV. B
–12–
INPUT CODE
1.00
0.50
–1.00
0
4095
1024
LINEARITY
ERROR
LSB
S
2048
3072
0.00
–0.50
VDD = +3.3V
VREF = 0V
VBIAS = 1.23V
OP AMP = AD820
TA = +25 C
Figure 9. All Codes Linearity in Biased Mode
(VDD = +3.3 V)
FREQUERCY – Hz
–50
–55
–100
100
100k
1k
THD
dBs
10k
–80
–85
–90
–95
–70
–75
–60
–65
VDD = +5V
TA = +25 C
VIN = 6V rms
OP AMP = AD711
Figure 10. Total Harmonic Distortion vs. Frequency
10
0%
100
90
200ns
5V
200ns
50mV
VDD = +5V
TA = +25 C
VREF = 0V
OP AMP = AD711
AD711 OUTPUT
Figure 11. Digital-to-Analog Glitch Impulse
FREQUENCY – Hz
0
–10
–100
1k
10M
10k
100k
1M
–40
–70
–80
–90
–20
–30
–60
–50
VDD = +5V
TA = +25 C
VIN = 20V p-p
OP AMP = AD711
DAC LOADED WITH ALL 0S
DAC LOADED WITH ALL 1S
Figure 12. Multiplying Frequency Response vs.
Digital Code
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