MAX7490 Maxim, MAX7490 Datasheet - Page 4

• Manufacturer Part Number: MAX7490
• Description: Dual Universal Switched-Capacitor Filters
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS—MAX7491
(V
from COM to GND, 50% duty-cycle clock input, COM = V
Dual Universal Switched-Capacitor Filters
4
FILTER
Center Frequency Range
Clock-to-Center Frequency
Accuracy
Q Accuracy
f
Q Temperature Coefficient
DC Lowpass Gain Accuracy
DC Offset Voltage
(Figure 8)
Crosstalk (Note 2)
COM Voltage Range
Input Resistance at COM
Clock Feedthrough
Noise (Note 3)
Output Voltage Swing
Input Leakage Current at COM
CLOCK
Maximum Clock Frequency
Internal Oscillator Frequency
(Note 4)
Clock Input High
Clock Input Low
Clock Duty Cycle
SHDN AND EXTCLK
Input High
Input Low
Input Leakage Current
DD
O
Temperature Coefficient
_______________________________________________________________________________________
= EXTCLK = +3V, f
PARAMETER
CLK
= 625kHz, T
SYMBOL
f
CLK
V
R
V
V
V
f
f
OSC
COM
CLK
V
COM
V
f
OS1
OS2
OS3
O
IH
IL
A
/f
= T
O
MIN
Mode 1
Mode 1, R1 = R3 = 50kΩ , R2 = 10kΩ,
Q = 5, deviation from 100:1
Mode 1, R1 = R3 = 50kΩ, R2 = 10kΩ,
Q = 5
Mode 1, R1 = R2 = 10kΩ
DC offset of input inverter
DC offset of 1st integrator
DC offset of 2nd integrator
f
Input: COM externally driven
Output: COM internally driven
Up to 5th harmonic of f
Mode 1, R1= R2 = R3 = 10kΩ,
LP output, Q = 1
SHDN = GND, V
EXTCLK = GND, C
EXTCLK = GND, C
V
IN
INPUT
to T
= 10kHz
MAX
= 0 to V
DD
, 10kΩ || 50pF load to V
/2. Typical values are at T
CONDITIONS
DD
COM
OSC
OSC
= 0 to V
CLK
= 1000pF
= 100pF
DD
DD
/2 at LP_, BP_, and N_/HP_, SHDN = V
A
= +25°C, unless otherwise noted.) (Note 1)
V
V
DD
DD
V
V
- 0.1
- 0.1
MIN
DD
DD
0.2
60
95
- 0.5
- 0.5
/2
/2
0.001 to
V
V
50 ±5
TYP
±0.2
±0.2
±0.1
±0.1
1.35
±0.4
200
135
-60
DD
DD
40
±1
±5
±3
±4
±4
80
60
4
/2
/2
V
V
V
D D
±12.5
+ 0.1
+ 0.1
MAX
±0.5
±0.7
±10
±10
±15
±25
120
175
DD
DD
0.5
0.5
±2
- 0.2
/2
/2
DD
ppm/°C
ppm/°C
UNITS
µV
µV
, 0.1µF
MHz
MHz
kHz
kHz
mV
dB
kΩ
µA
µA
%
%
%
%
V
RMS
RMS
V
V
V
V
V