Datasheet

LTC6602
7
6602fc
TYPICAL PERFORMANCE CHARACTERISTICS
Gain vs Frequency Distortion vs Input Frequency Distortion vs Output Voltage
Distortion vs Gain
Distortion vs Highpass
Cutoff Frequency
Distortion vs Lowpass
Cutoff Frequency
Filter Cutoff Accuracy
vs Supply Voltage
Filter Cutoff Accuracy
vs Temperature Common Mode Rejection
FREQUENCY (Hz)
GAIN (dB)
6602 G01
20
10
0
–40
–30
–20
–10
–50
–60
1k 1M 10M100k10k
T
A
= 25°C
V
S
= 3V
EXTERNAL CLOCK
R
BIAS
= 54.9k
GAIN = 0dB
Gain vs Frequency
-60
-50
-40
-30
-20
-10
0
10
20
1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency (Hz)
Gain (dB)
T
A
= 25
o
C
V
S
= 3V
External Clock
R
BIAS
= 54.9k
Gain = 0dB
15-150kHz BPF
45-300kHz BPF
90-900kHz BPF
90kHz-900kHz BPF
15kHz-150kHz BPF
45kHz-300kHz BPF
INPUT FREQUENCY (kHz)
DISTORTION (dBc)
66062 G02
–70
–75
–80
–85
–90
0 50 100 250 300200150
T
A
= 25°C, V
S
= 3V, DIFFERENTIAL INPUT,
V
IN
= 1.5V
P-P
, 12.4-82.4kHz BPF, R
BIAS
= 200k
45kHz-300kHz BPF, R
BIAS
= 54.9k, GAIN = 0dB
HD3
12kHz-82kHz BPF
HD2
12kHz-82kHz BPF
HD2
45kHz-300kHz BPF
HD3
45kHz-300kHz BPF
OUTPUT VOLTAGE (V
P-P
)
DISTORTION (dBc)
66062 G03
–30
–40
–50
–60
–70
–80
–90
–100
0 1 2 5 643
T
A
= 25°C
V
S
= 3V
f
IN
= 100kHz
DIFFERENTIAL INPUT
R
BIAS
= 54.9k
R
BIAS
= 45kHz-300kHz BPF
GAIN = 0dB
HD3
HD2
GAIN (dB)
DISTORTION (dBc)
6602 G04
–70
–75
–80
–85
–90
0 6 24 301812
T
A
= 25°C
V
S
= 3V
f
IN
= 100kHz
DIFFERENTIAL INPUT, V
OUT
= 1.5V
P-P
R
BIAS
= 54.9k
45kHz-300kHz BPF
HD3
HD2
HIGHPASS CUTOFF FREQUENCY (kHz)
DISTORTION (dBc)
6602 G05
–70
–75
–80
–85
–90
0 15 75 90604530
T
A
= 25°C
V
S
= 3V
f
IN
= 100kHz
DIFFERENTIAL INPUT, V
IN
= 1.5V
P-P
R
BIAS
= 54.9k
f
LP
= 300kHz
GAIN = 0dB
HD3
HD2
LOWPASS CUTOFF FREQUENCY (kHz)
DISTORTION (dBc)
6602 G06
–70
–75
–80
–85
–90
0 150 750 900600450300
T
A
= 25°C
V
S
= 3V
f
IN
= 100kHz
DIFFERENTIAL INPUT, V
IN
= 1.5V
P-P
R
BIAS
= 54.9k
f
HP
= 45kHz
GAIN = 0dB
HD3
HD2
SUPPLY VOLTAGE (V)
FILTER CUTOFF FREQUENCY DEVIATION (%)
6602 G07
0.10
0.05
0.00
–0.05
2.7 2.8 3.5 3.63.43.33.23.13.02.9
R
BIAS
= 54.9k
45kHz-300kHz BPF
GAIN = 0dB
–40°C
85°C
25°C
TEMPERATURE (°C)
FILTER CUTOFF FREQUENCY DEVIATION (%)
6602 G08
0.4
0.3
0.0
0.1
0.2
–0.4
–0.3
–0.2
–0.1
–40 806040200–20
V
S
= 3V
R
BIAS
= 54.9k
45kHz-300kHz BPF
GAIN = 0dB
5 TYPICAL UNITS
FREQUENCY (Hz)
COMMON MODE REJECTION (dB)
6602 G09
120
110
100
80
90
40
50
60
70
30
20
1k 1M 10M100k10k
T
A
= 25°C
V
S
= 3V
V
IN-CM
= 0V
ΔV
IN-CM
= 1.25V
P-P
R
BIAS
= 54.9k
45kHz-300kHz BPF
CMR = ΔV
IN-CM
/ΔV
OUT-DIFF
GAIN = 30dB
GAIN = 24dB
GAIN = 0dB
GAIN = 12dB