Datasheet

LTC6602
25
6602fc
TYPICAL APPLICATIONS
Switching the R
BIAS
Resistor
6602 TA02
LTC6602
V+
IN
+INA
–INA
+INB
–INB
R
BIAS
V
OCM
MUTE
GAIN0(D0)
GAIN1
GND
GND
–OUTA
+OUTA
–OUTB
+OUTB
CLKIO
SER
CLKCNTL
HPF0(SDO)
HPF1(SDI)
LPF0(SCLK)
LPF1(CS)
V+
A
V+
D
0.1µF
3V
1 2 16
24 18
19
12
13
15
17
5
9
6
11
10
23
7
8
4
3
20
21
22
14
25
V
OCM
MUTE
HPF0HPF1LPF0LPF1
DIODES INC
DMN2004DMK
0.1µF
R2 R1R3
3V
SOT-363
GAIN0GAIN1CLK0CLK1
CLK1 CLK0
0 0 R
BIAS1
f
CLK1
0 1 R
BIAS2
f
CLK2
1 0 R
BIAS3
f
CLK3
1 1 R
BIAS4
f
CLK4
R
BIAS1
> R
BIAS2
OR R
BIAS3
DESIGN PROCEDURE
1. CHOOSE f
CLK1
, f
CLK2
AND f
CLK3
2. CALCULALTE R
BIAS1
, R
BIAS2
AND R
BIAS3
3. CALCULATE R2, R3 AND R
BIAS4
R
BIAS1
IN k
f
CLK
IN MHz
R
BIAS
= 4941
f
CLK
R1 = R
BIAS1
R2 = R
BIAS1
• R
BIAS2
R
BIAS1
– R
BIAS2
R3 = R
BIAS1
• R
BIAS3
R
BIAS1
– R
BIAS3
R
BIAS4
= R1 • R2 • R3
R1 • (R2 + R3) + R2 • R3
LTC6602
V+
IN
+INA
–INA
+INB
–INB
R
BIAS
V
OCM
MUTE
GAIN0(D0)
GAIN1
GND
GND
–OUTA
+OUTA
–OUTB
+OUTB
CLKIO
SER
CLKCNTL
HPF0(SDO)
HPF1(SDI)
LPF0(SCLK)
LPF1(CS)
V+
A
V+
D
0.1µF
3V
1 2 16
24 18
19
12
13
15
17
5
9
6
11
10
23
7
8
4
3
20
21
22
14
25
V
OCM
MUTE
SDOSCLK
SDI
CS2CS1
LTC2630
8-BIT DAC
0.1µF
R1
3V
R2 = 1.056 • 10
13
f
CLKHI
– f
CLKLO
R1 = 1.056 • 10
13
1.137 • f
CLKHI
+ f
CLKLO
V
OUT
GND
V+
CS
SCLK
SDI
R2
0.1µF
6
5
4
1
2
3
3V
DAC V
OUT
LTC6602 f
CLK
0V f
CLKHI
2.5V f
CLKLO
DAC V
OUT
RANGE, 0V TO 2.5V
(USING LTC2630 INTERNAL REFERENCE)
PARALLEL CONTROL
SERIAL CONTROL