Typical Performance Characteristics–AD7824/AD7828
3
14
13
12
V
= 5V
DD
V
= 5.25V
DD
2
11
10
9
V
= 5V
DD
V
= 4.75V
50
DD
8
1
–100
–50
T
0
50
100
150
–100
–50
T
0
100
150
900
150
– AMBIENTTEMPERATURE – ؇C
– AMBIENTTEMPERATURE – ؇C
A
A
TPC 1. Conversion Time vs. Temperature
TPC 4. Power Supply Current vs. Temperature
(Not Including Reference Ladder)
2.0
1.5
2.0
V
= 5V
= 5V
= 25؇C
DD
V
= 5V
DD
V
REF
T
= 25؇C
A
T
A
1.5
1.0
0.5
1.0
0.5
0
0
0
1
2
3
4
5
300
400
500
600
700
800
V
–V
tP – ns
REF
V
REF
256
*1LSB =
TPC 2. Accuracy vs. VREF [VREF = VREF (+) – VREF (–)]
TPC 5. Accuracy vs. tP
–36
10
8
ENCODE RATE = 400kHz
INPUT SIGNAL = 5V p-p
V
= 5V
DD
–38
MEASUREMENT BANDWIDTH = 80kHz
–40
I
, V = 2.4V
SOURCE OUT
–42
6
–44
–46
–48
–50
4
I
, V = 0.4V
SINK OUT
2
0
–100
–52
1
2
3
4
5
7
10
20 30 40 50 70 100
–50
0
50
100
INPUT FREQUENCY – kHz
T
– AMBIENTTEMPERATURE – ؇C
A
TPC 3. Signal Noise Ratio vs. Input Frequency
TPC 6. Output Current vs. Temperature
REV. F
–5–
ADI [ ADI ]
