Datasheet

LT1568
3
1568f
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications and typical values are at T
A
= 25°C. V
S
= single 5V, EN pin to logic “low,” R
L
= 400Ω,
connected to midsupply, R
FIL
= R11 = R21 = R31 = R12 = R22 = R32, unless otherwise noted (see Block Diagram).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
B
Op Amp Input Bias Current V
S
= 3V ● 0.5 2 µA
V
S
= 5V ● 0.4 2 µA
V
S
= ±5V ● –0.2 2 µA
Inverter Bandwidth (Note 4) 55 MHz
Inverter Gain (Sections A and B, Note 5) Frequency = DC ● –0.2 0.01 0.2 dB
Frequency = 2MHz 0.01 dB
Frequency = 10MHz 0.27 dB
Inverter Phase Shift (Sections A and B, Frequency = DC 180 DEG
Note 5) Frequency = 2MHz 179 DEG
Frequency = 10MHz 176 DEG
SR Slew Rate (OUTA, OUTB, OUTA, 53 V/µs
OUTB) Pins
V
CM
Common Mode Input Voltage Range V
S
= 3V 1 to 1.9 V
(GNDA and GNDB Pins, Note 6) V
S
= ±5V –3.4 to 2.7 V
Single Supply GND Reference Voltage V
S
= 5V, GNDA Tied to GNDB 2.5 V
V
IL
EN Input Logic Low Level V
S
= 3V, 5V or ±5V ● V
+
– 2.1 V
V
IH
EN Input Logic High Level V
S
= 3V, 5V or ±5V ● V
+
– 0.6 V
EN Input Pull-Up Resistor 30 40 kΩ
t
DIS
Disable (Shutdown) Time EN Pin Steps from 0V to V
+
20 µs
t
EN
Enable (Start-Up) Time EN Pin Steps from V
+
to 0V 100 µs
ELECTRICAL CHARACTERISTICS
Specifications are for the output (OUTA or OUTB) of a single 2nd order section (A or B) with respect to V
GND
= V
GNDA
= V
GNDB
,
gain = –1, R
FIL
= R11 = R21 = R31 = R12 = R22 = R32, (see Block Diagram). The ● denotes the specifications which apply over the
full operating temperature range, otherwise specifications and typical values are at T
A
= 25°C. V
S
= single 5V, EN pin to logic “low,”
R
L
= 400Ω, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ADC DC Gain ● –1.01 –1 –0.99 V/V
V
OS(OUT)
DC Offset Voltage V
S
= 3V, f
C
= 1MHz, R
FIL
= 1.28k ● –5 2.6 15 mV
(V
OUTA
– V
GNDA
) or (V
OUTB
– V
GNDB
)V
S
= 5V, f
C
= 1MHz, R
FIL
= 1.28k ● –10 0.6 10 mV
V
S
= ±5V, f
C
= 1MHz, R
FIL
= 1.28k ● –12 –4.0 4 mV
∆V
OS(OUT)
DC Offset Voltage Mismatch V
S
= 3V, f
C
= 1MHz, R
FIL
= 1.28k ● –8 ±48 mV
(V
OUTA
– V
GNDA
) – (V
OUTB
– V
GNDB
)V
S
= 5V, V
S
= ±5V, f
C
= 1MHz, R
FIL
= 1.28k ● –10 ±410 mV
Transfer Function Characteristics for Each Section (A or B) to Single-Ended Output (OUTA or OUTB)
f
C
Cutoff Frequency Range (Note 7) V
S
= 3V, V
S
= 5V, V
S
= ±5V ● 0.2 10 MHz
TC Cutoff Frequency Temperature Coefficient ● ±1 ppm/°C
FILTER ELECTRICAL CHARACTERISTICS