LTC1609 Datasheet, PDF (22/24 Pages) Linear Technology – 16-Bit, 200ksps, Serial ADC with Multiple Input Ranges

LTC1609
APPLICATIO S I FOR ATIO
0V TO 10V
200Ω
33.2k
100Ω
V_IN
LTC1609
R1_IN
AGND1
R2_IN
CS/LD
SCK
SDI
5V
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
OFFSET
TRIM
GAIN
TRIM
+
2.2µF
787k
+
2.2µF
R3_IN
CAP
REF
AGND2
200Ω
V_IN
±10V
CS/LD
SCK
SDI
5V
100Ω
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
OFFSET
TRIM
33.2k
+
2.2µF
GAIN
TRIM
787k
+
2.2µF
LTC1609
R1_IN
AGND1
R2_IN
R3_IN
CAP
REF
AGND2
0V TO 5V
200Ω
LTC1609
R1_IN
33.2k
100Ω
AGND1
R2_IN
CS/LD
SCK
SDI
5V
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
OFFSET
TRIM
GAIN
TRIM
+
2.2µF
V_IN
787k
+
2.2µF
R3_IN
CAP
REF
AGND2
±5V
CS/LD
SCK
SDI
5V
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
200Ω
33.2k
100Ω
V_IN
OFFSET
+
TRIM _2.2µF
GAIN
TRIM
787k
+
2.2µF
LTC1609
R1_IN
AGND1
R2_IN
R3_IN
CAP
REF
AGND2
0V TO 4V
CS/LD
SCK
SDI
5V
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
200Ω
LTC1609
V_IN
R1_IN
100Ω
OFFSET
TRIM
GAIN
TRIM
33.2k
+
2.2µF
787k
+
2.2µF
AGND1
R2_IN
R3_IN
CAP
REF
AGND2
OFFSET/GAIN CIRCUITS FOR UNIPOLAR INPUT RANGES
200Ω
V_IN
LTC1609
R1_IN
±3.3V
100Ω
AGND1
R2_IN
CS/LD
SCK
SDI
5V
LTC1662
CS/LD V_OUTA
SCK GND
SDI
V_CC
REF V_OUTB
0.1µF
OFFSET
TRIM
33.2k
+
2.2µF
GAIN
TRIM
787k
+
2.2µF
R3_IN
CAP
REF
AGND2
1609 F16
OFFSET/GAIN CIRCUITS FOR BIPOLAR INPUT RANGES
Figure 16. Digitally-Controlled Offset and Full-Scale Adjust Circuits Using
the LTC1662 Dual 10-Bit V_OUT DAC (Adjust Offset First at 0V, Then Adjust Gain)
1609fa
22