LTC1609 LINER [Linear Technology], LTC1609 Datasheet - Page 22

• Manufacturer Part Number: LTC1609
• Description: 16-Bit, 200ksps, Serial ADC with Multiple Input Ranges
• Manufacturer: LINER [Linear Technology]

LTC1609
APPLICATIO S I FOR ATIO
22
CS/LD
0V TO 10V
CS/LD
0V TO 5V
CS/LD
0V TO 4V
OFFSET/GAIN CIRCUITS FOR UNIPOLAR INPUT RANGES
SCK
SCK
SCK
SDI
SDI
SDI
5V
5V
5V
CS/LD
SCK
SDI
REF
CS/LD
SCK
SDI
REF
CS/LD
SCK
SDI
REF
LTC1662
LTC1662
LTC1662
V
V
V
V
V
V
0.1 F
0.1 F
0.1 F
OUTA
OUTB
OUTA
OUTB
OUTA
OUTB
GND
GND
GND
V
V
V
U
CC
CC
CC
200
200
Figure 16. Digitally-Controlled Offset and Full-Scale Adjust Circuits Using
the LTC1662 Dual 10-Bit V
U
OFFSET
OFFSET
OFFSET
100
TRIM
GAIN
TRIM
TRIM
GAIN
TRIM
TRIM
GAIN
TRIM
2.2 F
2.2 F
+
+
33.2k
33.2k
33.2k
W
787k
V
V
IN
IN
787k
787k
2.2 F
2.2 F
2.2 F
2.2 F
100
V
100
IN
200
+
+
+
+
U
OUT
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
LTC1609
LTC1609
LTC1609
IN
IN
IN
IN
IN
IN
IN
IN
IN
DAC (Adjust Offset First at 0V, Then Adjust Gain)
CS/LD
CS/LD
CS/LD
3.3V
10V
5V
SCK
SCK
SCK
SDI
SDI
SDI
OFFSET/GAIN CIRCUITS FOR BIPOLAR INPUT RANGES
5V
5V
5V
CS/LD
SCK
SDI
REF
CS/LD
SCK
SDI
REF
CS/LD
SCK
SDI
REF
LTC1662
LTC1662
LTC1662
V
V
V
V
V
V
0.1 F
0.1 F
0.1 F
OUTA
OUTB
OUTA
OUTB
OUTA
OUTB
GND
GND
GND
V
V
V
CC
CC
CC
100
200
OFFSET
OFFSET
V
OFFSET
TRIM
TRIM
TRIM
TRIM
TRIM
TRIM
GAIN
GAIN
GAIN
IN
V
33.2k
V
100
33.2k
2.2 F
2.2 F
IN
33.2k
2.2 F
IN
200
787k
787k
787k
2.2 F
2.2 F
2.2 F
100
+
+
+
200
+
+
+
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
R1
AGND1
R2
R3
CAP
REF
AGND2
LTC1609
LTC1609
LTC1609
IN
IN
IN
IN
IN
IN
IN
IN
IN
1609 F16
1609fa