AMC7823 Datasheet, PDF (17/48 Pages) Texas Instruments – ANALOG MONITORING AND CONTROL CIRCUIT

AMC7823
www.ti.com
SLAS453A – APRIL 2005 – REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS: DIGITAL-TO-ANALOG CONVERTER (DAC) (continued)
At +25°C, AV_DD = DV_DD = 5V, unless otherwise noted.
DAC POWER-ON RESET
TO 0V
5V
AVDD, DVDD,
BVDD, RESET
0V
0V
DAC Output
Time (100µs/div)
Figure 33.
TYPICAL CHARACTERISTICS: PRECISION CURRENT SOURCE
At +25°C, AV_DD = DV_DD = 5V, unless otherwise noted.
100µA CURRENT SOURCE
vs TEMPERATURE
0.5
0.4 ^{AVDD / VREF = 5V / 2.5V}
or 3V / 1.25V
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
−50
−25
0
25
50
75
100
Temperature (_ C)
Figure 34.
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
−0.6
−0.7
−0.8
−0.9
−1.0
−1.1
−1.2
4.00
PRECISION_I_OUTPUT vs
COMPLIANCE VOLTAGE
10µA (nom)
AV_DD = 5V
V_REF = 2.5V
10mA (nom)
1mA (nom)
100µA (nom)
4.25
4.5
4.75
5.0
Compliance Voltage (V)
Figure 35.
17