EVAL-AD7866CB AD [Analog Devices], EVAL-AD7866CB Datasheet - Page 12

• Manufacturer Part Number: EVAL-AD7866CB
• Description: Dual 1 MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface
• Manufacturer: AD [Analog Devices]

AD7866
111...111
111...110
111...000
011...111
000...010
000...001
000...000
RANGE
RANGE
0V
D
D
D
D
SCLK
SCLK
OUT
OUT
OUT
OUT
1LSB
CS
CS
0V
A
B
A
B
V
ANALOG INPUT
1LSB = V
R1 = R2 = R3 = R4
A
A
V
V
1
1
REF
REF
– 1LSB
/4096
R3
R2
±
×
R4
100nF
B
B
R1
8
8
470nF
V
REF
470nF
16
16
D
D
V
V
+V
–V
CAP
CAP
IN
REF
V
REF SELECT
REF
AD7866
REF
REF
A
B
V
0V TO 2
INPUT RANGE
INPUT RANGE
REF
V
(= 2
(= 0V)
/2
DRIVE
D
OUT
V
±
REF
V
V
REF
REF
COMPLEMENT
011...111
011...110
111...111
/2
000...001
000...000
100...010
100...001
100...000
)
TWO'S
1
1
TWO’S COMPLEMENT
–V
STRAIGHT BINARY
011
000
100
REF
+ 1LSB
1LSB = 2
111
000
000
V
REF
DSP/ P
ANALOG INPUT
V
V
DD
DD
– 1LSB
V
16
16
REF
/4096
+V
REF
– 1LSB