AD9200LQFP-EVAL AD [Analog Devices], AD9200LQFP-EVAL Datasheet - Page 10

• Manufacturer Part Number: AD9200LQFP-EVAL
• Description: Complete 10-Bit, 20 MSPS, 80 mW CMOS A/D Converter
• Manufacturer: AD [Analog Devices]

AD9200
–F/S RANGE OBTAINED
+F/S RANGE OBTAINED
FROM VREF PIN OR
FROM VREF PIN OR
EXTERNAL REF
EXTERNAL REF
+FS
–FS
SWITCHED OPEN BY THE PRESENSE
INTERNAL 10K REF RESISTORS ARE
AD9200
1V
AD9200
1V
REFBS
REFTS
OF R
AIN
A
A1
A1
AND R
(Between 1 V and 2 V)
a. Top/Bottom Mode
f. Variable Reference
d. 1 V Reference
B
10k
10k
.
10k
10k
A2
VREF
(= 1 + R
REFSENSE
AVSS
REFERENCE AND TURNS RATIO
SHA
IS DETERMINED BY INTERNAL
VREF
(1V)
REFSENSE
R
R
AVSS
MAXIMUM MAGNITUDE OF V
A
B
CORE
A
A/D
V
/R
B
)
AD9200
AVDD/2
4.2k
TOTAL
REFBS
REFTS
0.1 F
0.1 F
AIN
0.1 F
REFTF
REFBF
MODE
(AVDD)
1.0 F
1.0 F
INTERNAL
c. Differential Mode
REF
0.1 F
10k
10k
0.1 F
10 F
Figure 16.
–10–
10k
10k
A2
SHA
MIDSCALE
CORE
A/D
AD9200
MIDSCALE OFFSET
VOLTAGE IS DERIVED
FROM INTERNAL OR
EXTERNAL REF
V*
4.2k
TOTAL
REFBS
REFTS
AD9200
AIN
1V
g. Internal Reference Disable
(Power Reduction)
AD9200
0.1 F
MODE
REFTF
REFBF
1V
b. Center Span Mode
INTERNAL
A1
REF
AVDD/2
e. 2 V Reference
10k
0.1 F
10k
A1
0.1 F
10 F
* MAXIMUM MAGNITUDE OF V IS DETERMINED
10k
10k
BY INTERNAL REFERENCE
10k
10k
A2
SHA
REFSENSE
AVSS
VREF
(2V)
CORE
A/D
VREF
0.01 F
AD9200
REFSENSE
AVDD
4.2k
TOTAL
1.0 F
0.1 F
MODE
REFTF
REFBF
REV. E
AVDD/2
0.1 F
0.1 F
10 F