LTC6603 Linear Technology, LTC6603 Datasheet - Page 14

• Manufacturer Part Number: LTC6603
• Description: Dual Adjustable Lowpass Filter
• Manufacturer: Linear Technology

APPLICATIONS INFORMATION
LTC6603
14
Figure 2. Bidirectional Design of GAIN0(OUT) Pin
SCLK
SDI
CS
(INTERNAL
NODE)
Serial Control Register Defi nition
μP
D15
GAIN0
GAIN, BW CONTROL WORD FOR #2
0.1μF
D7
CSX
SCLK
SDI
V+
D
V
+
–
IN1
3.3V
GAIN1
D6
6603 F02
D11
V+
V+
V+
+INA
–INA
SER
LPF1(CS)
LPF0(SCLK)
SDI
GND
GAIN0(D0)
IN
A
D
D10
LPF0
D5
LTC6603
Figure 4. Two Devices in a Daisy Chain
SHUTDOWN FOR #2
#1
GAIN0(D0)
D9
+OUTA
–OUTA
SDO
LPF1
D4
D8
OUT1
+
–
V
NO FUNCTION NO FUNCTION
OUT1
D7
GAIN, BW CONTROL WORD FOR #1 SHUTDOWN FOR #1
D3
0.1μF
Figure 3. Diagram of Serial Interface (MSB First Out)
V
IN2
+
–
3.3V
CS
D3
D2
SDI
V+
V+
V+
+INA
–INA
SER
LPF1(CS)
LPF0(SCLK)
SDI
GND
OUT
SHUTDOWN
IN
A
D
D2
SCLK
LTC6603
SHDN
#2
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
D1
GAIN0(D0)
D1
FUNCTION
SHIFT-REGISTER
8-BIT LATCH
+OUTA
–OUTA
NO
SDO
8-BIT
SDO
www.DataSheet4U.com
CONTROL CODE
4-BIT GAIN, BW
D0
OUT
D0
OUT2
SDO
+
–
V
OUT2
6603 F03
6603 F04
6603f