Equivalent Input/Output Circuits
AVDD2
R
AVSS2
AVSS2
Circuit 1. CCDIN (Pin 29)
AVDD1
330⍀ 25k⍀
CLI
1.4V
AVSS1
Circuit 2. CLI (Pin 23)
DATA
DVDD4
DVDD3
THREE-
STATE
DOUT
AD9847
DVDD4
330⍀
DVSS4
Circuit 4. Digital Inputs (Pins 36–44)
DATA
DVDD1
ENABLE
OUTPUT
DVSS1
Circuit 5. H1–H4 and RG (Pins 13, 14, 17, 18, 20)
DVSS4
DVSS3
Circuit 3. Data Outputs D0–D9 (Pins 1–5, 8–12)
Typical Performance Characteristics
0.50
0.25
0
–0.25
–0.50
0
200
400
600
800
1000
TPC 1. Typical DNL
REV. A
–7–
4
3
2
1
0
0
200
400
600
800
1000
VGA GAIN CODE – LSB
TPC 2. Output Noise vs. VGA Gain Setting