LTC1069-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. fCUTOFF is the filter’s cutoff frequency and is equal to fCLK/100. The
fCLK signal level is TTL or CMOS (clock rise or fall time ≤ 1μs), VS = 3.3V to 5V, RL = 10k, unless otherwise noted. All AC gains are
measured relative to the passband gain.
PARAMETER
CONDITIONS
V = 5V, f = 500kHz
CLK
MIN
TYP
MAX
UNITS
Gain at 0.50f
–0.10
–0.11
–0.03
0.10
0.11
dB
dB
CUTOFF
CUTOFF
CUTOFF
CUTOFF
S
l
l
l
l
l
l
l
l
l
l
l
l
l
l
f
= 2.5kHz, V = 1V
IN RMS
TEST
V = 3.3V, f
TEST
= 200kHz
CLK
–0.10
–0.11
–0.03
0.04
0.10
0.11
dB
dB
S
f
= 1kHz, V = 0.5V
IN RMS
Gain at 0.75f
Gain at 0.90f
Gain at 0.95f
V = 5V, f
TEST
= 500kHz
CLK
–0.20
–0.25
0.20
0.25
dB
dB
S
f
= 3.75kHz, V = 1V
IN RMS
V = 3.3V, f
TEST
= 200kHz
CLK
–0.20
–0.25
0.04
0.20
0.25
dB
dB
S
f
= 1.5kHz, V = 0.5V
IN RMS
V = 5V, f
TEST
= 500kHz
CLK
–0.20
–0.25
–0.01
–0.01
–0.05
–0.04
–0.70
–0.61
–27
0.20
0.25
dB
dB
S
f
= 4.5kHz, V = 1V
IN RMS
V = 3.3V, f
TEST
= 200kHz
CLK
–0.20
–0.25
0.20
0.25
dB
dB
S
f
= 1.8kHz, V = 0.5V
IN
RMS
RMS
V = 5V, f
TEST
= 500kHz
CLK
–0.30
–0.35
0.30
0.35
dB
dB
S
f
= 4.75kHz, V = 1V
IN
V = 3.3V, f
TEST
= 200kHz
CLK
–0.30
–0.35
0.30
0.35
dB
dB
S
f
= 1.9kHz, V = 0.5V
IN RMS
Gain at f
V = 5V, f = 500kHz
CLK
–1.25
–1.35
–0.25
–0.15
dB
dB
CUTOFF
S
TEST
f
= 5.0kHz, V = 1V
IN RMS
V = 3.3V, f
TEST
= 200kHz
CLK
–1.25
–1.35
–0.25
–0.15
dB
dB
S
f
= 2.0kHz, V = 0.5V
IN
RMS
RMS
Gain at 1.25f
V = 5V, f = 500kHz
CLK
–30
–31
–25
–24
dB
dB
CUTOFF
CUTOFF
S
TEST
f
= 6.25kHz, V = 1V
IN
V = 3.3V, f
TEST
= 200kHz
CLK
–30
–31
–27
–25
–24
dB
dB
S
f
= 2.5kHz, V = 0.5V
IN RMS
Gain at 1.50f
V = 5V, f
TEST
= 500kHz
CLK
–58
–59
–53
–50
–49
dB
dB
S
f
= 7.5kHz, V = 1V
IN RMS
V = 3.3V, f
TEST
= 200kHz
CLK
–58
–59
–53
–50
–49
dB
dB
S
f
= 3kHz, V = 0.5V
IN RMS
Output DC Offset (Input at AGND)
Output Voltage Swing
V = 5V, f
= 500kHz
CLK
30
20
15
150
mV
mV
mV
S
V = 4.75V, f
= 400kHz
S
CLK
V = 3.3V, f
= 200kHz
100
S
CLK
l
l
l
V = 5V
–3.25
–1.50
–0.70
4.0
1.7
0.9
3.25
1.25
0.60
V
V
V
S
V = 4.75V
S
V = 3.3V
S
l
l
l
Power Supply Current
V = 5V, f
= 500kHz
3.8
2.5
2.0
5.5
4.5
3.5
mA
mA
mA
S
CLK
V = 4.75V, f
= 400kHz
CLK
S
V = 3.3V, f
= 200kHz
CLK
S
Maximum Clock Frequency
V = 5V
1.2
0.8
0.5
MHz
MHz
MHz
S
V = 4.75V
S
V = 3.3V
S
Input Frequency Range
Input Resistance
0
f
/2
MHz
kΩ
V
CLK
30
43
70
Operating Power Supply Voltage
1.57
5.5
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
10691fa
3