Datasheet

LTC6602
14
6602fc
APPLICATIONS INFORMATION
Figure 2. Bidirectional Design of
HPFO(SDO) and GAIN0(D0) Pins
Figure 3. Diagram of Serial Interface (MSB First Out)
Figure 4. Two Filters in a Daisy Chain
Serial Control Register Definition
D7 D6 D5 D4 D3 D2 D1 D0
GAIN0 GAIN1 LPF0 LPF1 HPF0 HPF1 SHDN OUT
µP
6602 F04
LPF1(CS)
SCLK
SDI
SCLK
SDI
CS
D15 D11 D10 D9 D8 D7 D3 D2 D1 D0
GAIN, BW CONTROL WORD FOR #2 GAIN, BW CONTROL WORD FOR #1
SHUTDOWN FOR #1SHUTDOWN FOR #2
V+
IN
V+
A
V+
D
+INA
–INA
SER
LPF1(CS)
LPF0(SCLK)
HPF1(SDI)
GND
LTC6602
#1
V
OUT1
V
IN1
0.1µF
+
–
+
–
+
–
+
–
V
IN2
3.3V
+OUTA
–OUTA
OUT1
V+
IN
V+
A
V+
D
+INA
–INA
SER
LPF1(CS)
LPF0(SCLK)
HPF1(SDI)
GND
LTC6602
#2
V
OUT2
0.1µF
3.3V
+OUTA
–OUTA
OUT2
GAIN0(D0)
HPF0(SDO)
GAIN0(D0)
HPF0(SDO)
SDO
V+
D
HPF0(SDO)
6602 F02
(INTERNAL
NODE)
6-BIT GAIN, BW
CONTROL CODE
8-BIT LATCH
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
8-BIT
SHIFT-REGISTER
SDO
SCLK
D
IN
CS
6602 F03
OUT
SHUTDOWN