lt1568 Linear Technology Corporation, lt1568 Datasheet - Page 4

• Manufacturer Part Number: lt1568
• Description: Very Low Noise, High Frequency Active Rc, Filter Building Block
• Manufacturer: Linear Technology Corporation

FILTER ELECTRICAL CHARACTERISTICS
LT1568
Specifications are for the output (OUTA or OUTB) of a single 2nd order section (A or B) with respect to V
gain = –1, R
full operating temperature range, otherwise specifications and typical values are at T
R
SYMBOL
THD
Specifications are for the OUTA or OUTB of a single 2nd order section (A or B) with respect to V
R
operating temperature range, otherwise specifications and typical values are at T
R
SYMBOL
ADC
V
Transfer Function Characteristics for Each Section (A or B) to Single-Ended Output (OUTA or OUTB)
f
4
C
TC
OS(OUT)
V
L
FIL
L
OS(OUT)
= 400 connected to midsupply, unless otherwise noted.
= 400 connected to midsupply, unless otherwise noted.
= R11 = R21 = R31 = R12 = R22 = R32, (see Block Diagram) The
FIL
PARAMETER
Filter Gain, f
V
(Measured with Respect to DC Gain)
Filter Gain, f
V
(Measured with Respect to DC Gain)
Filter Gain Mismatch
( V
Wideband Output Noise
Total Harmonic Distortion
PARAMETER
DC Gain
DC Offset Voltage
(V
DC Offset Voltage Mismatch
(V
Cutoff Frequency Range (Note 7)
Cutoff Frequency Temperature Coefficient
Filter Gain, f
V
(Measured with Respect to DC Gain)
S
S
S
OUTA
OUTA
= 5V, R
= 5V, R
= 5V, R
= R11 = R21 = R31 = R12 = R22 = R32, (see Block Diagram). The
OUTA
– V
– V
– V
FIL
FIL
FIL
GNDA
GNDA
C
C
C
= 1MHz,
= 1.28k
= 10MHz,
= 128
= 1MHz,
= 1.28k
OUTB
) or (V
) – (V
)
OUTB
OUTB
– V
– V
GNDB
GNDB
)
)
CONDITIONS
Test Frequency = 300kHz (0.3 • f
Test Frequency = 750kHz (0.75 • f
Test Frequency = 1MHz (1 • f
Test Frequency = 2MHz (2 • f
Test Frequency = 4MHz (4 • f
Test Frequency = 1MHz (0.1 • f
Test Frequency = 7.5MHz (0.75 • f
Test Frequency = 10MHz (1 • f
Test Frequency = 20MHz (2 • f
Test Frequency = 40MHz (4 • f
f
f
f
f
f
f
f
f
CONDITIONS
V
V
V
V
V
Test Frequency = 300kHz (0.3 • f
Test Frequency = 750kHz (0.75 • f
Test Frequency = 1MHz (1 • f
Test Frequency = 2MHz (2 • f
Test Frequency = 4MHz (4 • f
C
C
C
C
C
IN
C
IN
S
S
S
S
S
= 1MHz, f
= 10MHz, f
= 1MHz, R
= 10MHz, R
= 1MHz, R
= 10MHz, R
= 200kHz, V
= 2MHz, V
= 3V, f
= 5V, V
= 3V, f
= 5V, V
= 3V, V
C
C
S
S
S
= 1MHz, R
= 1MHz, R
IN
= 5V, f
= 5V, f
= 5V, V
FIL
FIL
IN
IN
FIL
FIL
= f
IN
= f
= 1V
= 1.28k, BW = 2MHz
= 1.28k,
C
= 128 , BW = 20MHz
= 128 ,
= 1V
C
S
C
C
P-P
= 5V
FIL
= 1MHz, R
FIL
= 1MHz, R
P-P
denotes the specifications which apply over the full
= 1.28k
= 1.28k
C
C
C
C
C
C
)
)
)
)
)
)
C
C
C
C
)
)
)
)
FIL
FIL
C
C
)
)
C
C
C
A
)
)
)
= 1.28k
= 1.28k
denotes the specifications which apply over the
= 25 C. V
A
= 25 C. V
S
= single 5V, EN pin to logic “low,”
GND
S
= single 5V, EN pin to logic “low,”
= V
–0.05
–1.45
–3.60
–13.7
–14.2
–0.25
–0.30
–0.10
–1.40
–3.50
–13.7
–0.1
–1.5
–3.5
0.99
MIN
MIN
–10
–10
GNDA
0.2
–9
–8
GND
= V
= V
–3.20
–25.0
–27.5
–3.10
–1.20
–13.2
–13.2
–1.00
–13.0
–25.0
GNDA
GNDB
–1.0
–3.0
TYP
– 84
– 69
TYP
0.05
0.02
0.02
0.02
0.15
–1
18
34
–2
1
1
2
2
, gain = 1,
= V
GNDB
–0.85
–2.80
–12.5
–0.50
–2.40
–12.2
–0.65
–2.60
–12.5
MAX
0.25
0.30
MAX
1.01
0.25
0.25
0.40
10
10
10
5
8
,
ppm/ C
UNITS
UNITS
V
V
MHz
1568f
RMS
RMS
V/V
mV
mV
mV
mV
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB