Datasheet

LTC6603
3
6603fa
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V+
A
= V+
D
= V+
IN
= 3V, V
ICM
= V
OCM
= 1.5V, Gain = 0dB, lowpass
cutoff = 2.5MHz, internal clocking with R
BIAS
= 30.9k unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Filter Phase Either
Channel
External Clock = 80MHz, Filter Cutoff (f
C
) = 156.25kHz, V
IN
= 3.6V
P-P,
Pin 3 Open
f
IN
= 62.5kHz (0.4 • f
C
)
f
IN
= 125kHz (0.8 • f
C
)
f
IN
= 156.25kHz (f
C
)
l
l
l
158
–44
–152
161
–39
–146
163
–36
–142
deg
deg
deg
Matching of Filter
Phase
External Clock = 80MHz, Filter Cutoff (f
C
) = 156.25kHz, V
IN
= 3.6V
P-P,
Pin 3 Open
f
IN
= 62.5kHz (0.4 • f
C
)
f
IN
= 125kHz (0.8 • f
C
)
f
IN
= 156.25kHz (f
C
)
l
l
l
±0.2
±0.4
±0.5
±1.5
±3
±4
deg
deg
deg
Filter Gain Either
Channel
External Clock = 80MHz, Filter Cutoff (f
C
) = 2.5MHz, V
IN
= 3.6V
P-P,
Pin 3 Open
DC Gain, Gain Set = 0dB
f
IN
= 1MHz (0.4 • f
C
), Relative to DC Gain
f
IN
= 2MHz (0.8 • f
C
), Relative to DC Gain
f
IN
= 2.5MHz (f
C
), Relative to DC Gain
f
IN
= 4MHz (1.5 • f
C
), Relative to DC Gain
l
l
l
l
l
0
–2
–0.7
–1.1
0.5
–0.8
0.4
0.1
–43
1.2
–0.1
1.5
1
–32.6
dB
dB
dB
dB
dB
Matching of Filter
Gain
External Clock = 80MHz, Filter Cutoff (f
C
) = 2.5MHz, V
IN
= 3.6V
P-P,
Pin 3 Open
f
IN
= 2MHz (0.8 • f
C
)
f
IN
= 2.5MHz (f
C
)
l
l
±0.05
±0.2
±0.2
±0.4
dB
dB
Filter Phase
Either Channel
External Clock = 80MHz, Filter Cutoff (f
C
) = 2.5MHz, V
IN
= 3.6V
P-P,
Pin 3 Open
f
IN
= 1MHz (0.4 • f
C
)
f
IN
= 2MHz (0.8 • f
C
)
f
IN
= 2.5MHz (f
C
)
l
l
l
150
–45
–152
155
–39
–141
159
–28
–126
deg
deg
deg
Matching of Filter
Phase
External Clock = 80MHz, Filter Cutoff (f
C
) = 2.5MHz, V
IN
= 3.6V
P-P,
Pin 3 Open
f
IN
= 1MHz (0.4 • f
C
)
f
IN
= 2MHz (0.8 • f
C
)
f
IN
= 2.5MHz (f
C
)
l
l
l
±2.5
±4
±4
deg
deg
deg
Filter Cutoff Accuracy
when Self Clocked
CLKCNTL = 3V (Note 4)
R
BIAS
= 200k
R
BIAS
= 54.9k
R
BIAS
= 30.9k
l
l
l
±3
±3
±3.5
%
%
%
DC Gain Filter Cutoff (f
C
) = 2.5MHz, 0.6V to 2.4V Each Output, Pin 3 Open
Gain Setting = 0dB
Gain Setting = 6dB
Gain Setting = 12dB
Gain Setting = 24dB
l
l
l
l
0
5.6
11.2
22.5
0.5
6
11.8
23.2
1.2
6.6
12.5
24
dB
dB
dB
dB
DC Gain Matching Filter Cutoff (f
C
) = 2.5MHz, 0.6V to 2.4V Each Output, Pin 3 Open
Gain Setting = 0dB
Gain Setting = 6dB
Gain Setting = 12dB
Gain Setting = 24dB
l
l
l
l
±0.1
±0.05
±0.05
±0.1
±0.2
±0.1
±0.15
±0.2
dB
dB
dB
dB
Noise At 200kHz Voltage Noise Referred to the Input
Gain = 0dB
Gain = 6dB
Gain = 12dB
Gain = 24dB
–124
–129
–135
–145
dBm/Hz
dBm/Hz
dBm/Hz
dBm/Hz
Integrated Noise Noise Bandwidth = 5MHz, Referred to the Input
Gain = 0dB
Gain = 6dB
Gain = 12dB
Gain = 24dB
–53
–59
–65
–76
dBm
dBm
dBm
dBm
THD V
IN
= 2V
P-P
, f
IN
= 200kHz, Gain Setting = 24dB –75 dB
Input Impedance Gain = 24dB, R
BIAS
= 30.9k, Filter Cutoff (f
C
) = 2.5MHz
Differential
Common Mode
1.6
5
k
k