AMC7812B Datasheet, PDF (19/92 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
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SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
TYPICAL CHARACTERISTICS: DAC (continued)
At +25°C, unless otherwise noted.
3
5
2
1
0
−1
T_A = +25°C
−2
Gain = 2
V_REF = 2.5V, Internal
Code = 020h
−3
4.5 6 7.5 9 10.5 12 13.5 15 16.5 18
AV_CC (V)
Figure 30. OFFSET VOLTAGE vs SUPPLY VOLTAGE
3
1
−1
T_A = +25°C
−3
Gain = 5
V_REF = 2.5V, Internal
Code = 020h
−5
12
13
14
15
16
17
18
AV_CC (V)
Figure 31. OFFSET VOLTAGE vs SUPPLY VOLTAGE
3
2.9
T_A = +25°C
AV_CC = 15V
2.8
Gain = 2
V_REF = 2.5V, Internal
2.7
Code = 800h
2.6
2.5
2.4
2.3
2.2
2.1
2
−40 −30 −20 −10 0
10 20 30 40
I_LOAD (mA)
Figure 32. OUTPUT VOLTAGE vs OUTPUT CURRENT
5
FFFh
FF0h
4.95
FE0h
FC0h
4.9
F80h
4.85
4.8
T_A = +25°C
4.75 ^{AVCC = 5V}
Gain = 2
V_REF = 2.5V, Internal
4.7
0
2
4
6
8
10
12
I_LOAD (mA)
Figure 33. OUTPUT VOLTAGE vs
SOURCE CURRENT CAPABILITY
350
080h
300
040h
020h
010h
250
000h
200
150
100 _{TA = +25°C}
AV_CC = 15V
50 _{Gain = 2}
V_REF = 2.5V, Internal
0
−12 −11 −10 −9 −8 −7 −6 −5 −4 −3 −2 −1 0
I_LOAD (mA)
Figure 34. OUTPUT VOLTAGE vs
SINK CURRENT CAPABILITY
4.9
4.7
4.5
4.3
4.1
3.9
3.7
3.5
3.3
4.5
T_A = +25°C
Gain = 2
V_REF = 2V, External
Code = 800h
6 7.5 9 10.5 12 13.5 15 16.5 18
AV_CC (V)
Figure 35. DAC SUPPLY CURRENT vs
DAC SUPPLY VOLTAGE
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