AD7248A_15 Datasheet, PDF (7/16 Pages) Analog Devices – LC MOS 12-Bit DACPORTs

Typical Performance Characteristics– AD7245A/AD7248A
7
I_DD (V_SS = –15V, V_IN = V _INL OR V _INH)
V_DD = +15V
6
I_DD (V_SS = –15V, V_IN = 0V OR V _DD)
5
4
I_DD (V_SS = 0V, V _IN = 0V OR V_DD)
3
2
I_SS (V_SS = –15V)
1
4.995
5.000
5.005
0
–55
–25
0
25
70 85
125
TEMPERATURE – ؇C
TPC 1. Power Supply Current vs. Temperature
5.010
–55
–25
0
25
70 85
125
TEMPERATURE – ؇C
TPC 4. Reference Voltage vs. Temperature
500
V_DD = 15V
V_SS = 0V
T_A = 25؇C
200
REFERENCE (NO DECOUPLING)
100
REFERENCE (DECOUPLED*)
50
20
OUTPUT WITH
ALL 0s ON DAC
10
50 100 200
500 1k 2k
5k 10k 20k 50k
FREQUENCY – Hz
*REFERENCE DECOUPLING COMPONENTS AS PER FIGURE 8
TPC 2. Noise Spectral Density vs. Frequency
OUTPUT WITH ALL
0s ON DAC
80
60
OUTPUT WITH ALL
1s ON DAC
40
DECOUPLING*
NO
DECOUPLING
DECOUPLING
NO DECOUPLING
20
V_DD = 15V WITH
100mV p-p SIGNAL
0
50
100 200
1k 2k
10k 20k
100k
FREQUENCY – Hz
*POWER SUPPLY DECOUPLING CAPACITORS ARE 10␮F AND 0.1␮F
TPC 5. Power Supply Rejection Ration vs. Frequency
1mV
100
90
1mV
100
90
10
0%
2V
1␮s
TPC 3. Positive-Going Settling Time
(V_DD = +15 V, V_SS = –15 V)
10
0%
2V
1␮s
TPC 6. Negative Going Settling Time
(V_DD = +15 V, V_SS = –15 V)
REV. B
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