Datasheet

LTC1068 Series
5
1068fc
ELECTRICAL CHARACTERISTICS
LTC1068-50 (Internal Op Amps). The l denotes the specifications which
apply over the full operating temperature range, otherwise specifications are at V
S
= ±5V, T
A
= 25°V, unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage Range 3.14 ±5.5 V
Voltage Swings V
S
= 3.14V, R
L
= 5k (Note 2)
V
S
= 4.75V, R
L
= 5k (Note 3)
V
S
= ±5V, R
L
= 5k
l
l
l
1.2
2.6
±3.4
1.8
3.6
±4.1
V
P-P
V
P-P
V
Output Short-Circuit Current (Source/Sink) V
S
= ±3.14V
V
S
= ±5V
17/6
20/15
mA
mA
DC Open-Loop Gain R
L
= 5k 85 dB
GBW Product V
S
= ±5V 4 MHz
Slew Rate V
S
= ±5V 7 V/µs
Analog Ground Voltage (Note 4) V
S
= 5V, Voltage at AGND 2.175V ±2% V
LTC1068-50 (Complete Filter) V
S
= ±5V, T
A
= 25°V, unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Clock-to-Center Frequency Ratio
(Note 5) V
S
= 3.14V, f
CLK
= 250kHz, Mode 1 (Note 2),
f
O
= 5kHz, Q = 5, V
IN
= 0.34V
RMS
,
R1 = R3 = 49.9k, R2 = 10k
l
50 ±0.3 50 ±0.8
50 ±0.9
%
%
V
S
= ±5V, f
CLK
= 500kHz, Mode 1,
f
O
= 10kHz, Q = 5, V
IN
= 1V
RMS
,
R1 = R3 = 49.9k, R2 = 10k
l
50 ±0.3 50 ±0.8
50 ±0.9
%
%
Clock-to-Center Frequency Ratio,
Side-to-Side Matching (Note 5)
V
S
= 3.14V, f
CLK
= 250kHz, Q = 5 (Note 2)
V
S
= ±5V, f
CLK
= 500kHz, Q = 5
l
l
±0.25
±0.25
±0.9
±0.9
%
%
Q Accuracy (Note 5) V
S
= 3.14V, f
CLK
= 250kHz, Q = 5 (Note 2)
V
S
= ±5V, f
CLK
= 500kHz, Q = 5
l
l
±1
±1
±3
±3
%
%
f
O
Temperature Coefficient ±1 ppm/°C
Q Temperature Coefficient ±5 ppm/°C
DC Offset Voltage (Note 5)
(See Table 1)
V
S
= ±5V, f
CLK
= 500kHz, V
OS1
(DC Offset of Input Inverter)
l
0 ±15 mV
V
S
= ±5V, f
CLK
= 500kHz, V
OS2
(DC Offset of First Integrator)
l
–2 ±25 mV
V
S
= ±5V, f
CLK
= 500kHz, V
OS3
(DC Offset of Second Integrator)
l
–5 ±40 mV
Clock Feedthrough V
S
= ±5V, f
CLK
= 500kHz 0.16 mV
RMS
Max Clock Frequency (Note 6) V
S
= ±5V, Q ≤ 1.6, Mode 1 3.4 MHz
Power Supply Current V
S
= 3.14V, f
CLK
= 250kHz (Note 2)
V
S
= 4.75V, f
CLK
= 250kHz (Note 3)
V
S
= ±5V, f
CLK
= 500kHz
l
l
l
3.0
4.3
6.0
5
8
11
mA
mA
mA