Datasheet

AD7245A/AD7248A
REV. B
–7–
Typical Performance Characteristics–
TEMPERATURE – ⴗC
5
4
0
–55 70
POWER SUPPLY CURRENT – mA
–25 0
3
85 125
6
7
V
DD
= +15VI
DD
(V
SS
= –15V, V
IN
= V
INL
OR V
INH
)
I
DD
(V
SS
= –15V, V
IN
= 0V OR V
DD
)
I
DD
(V
SS
= 0V, V
IN
= 0V OR V
DD
)
I
SS
(V
SS
= –15V)
2
1
25
TPC 1. Power Supply Current vs. Temperature
FREQUENCY – Hz
100
50
10
50 2k100
nV Hz
200 500 1k
20
20k5k 10k 50k
200
500
V
DD
= 15V
V
SS
= 0V
T
A
= 25ⴗC
OUTPUT WITH
ALL 0s ON DAC
REFERENCE (DECOUPLED*)
REFERENCE (NO DECOUPLING)
*REFERENCE DECOUPLING COMPONENTS AS PER FIGURE 8
TPC 2. Noise Spectral Density vs. Frequency
100
90
10
0%
1mV
1 ␮ s
2V
TPC 3. Positive-Going Settling Time
(V
DD
= +15 V, V
SS
= –15 V)
TEMPERATURE – ⴗC
5.005
5.010
–55
REFERENCE VOLTAGE – Vo l ts
–25 0 25 70 85 125
5.000
4.995
TPC 4. Reference Voltage vs. Temperature
2k200 10k
FREQUENCY – Hz
60
40
0
50 100
PSRR – dB
1k
20
20k 100k
80
*POWER SUPPLY DECOUPLING CAPACITORS ARE 10␮F AND 0.1␮F
OUTPUT WITH ALL
0s ON DAC
OUTPUT WITH ALL
1s ON DAC
V
DD
= 15V WITH
100mV p-p SIGNAL
DECOUPLING*
NO
DECOUPLING
DECOUPLING
NO DECOUPLING
TPC 5. Power Supply Rejection Ration vs. Frequency
100
90
10
0%
1mV
1 ␮ s
2V
TPC 6. Negative Going Settling Time
(V
DD
= +15 V, V
SS
= –15 V)