MAX7490 Maxim, MAX7490 Datasheet - Page 2

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

ABSOLUTE MAXIMUM RATINGS
V
EXTCLK, SHDN to GND ...........................................-0.3V to +6V
INV_, LP_, BP_, N_/HP_, S_, COM,
Maximum Current into Any Pin ...........................................50mA
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS—MAX7490
(V
from COM to GND, 50% duty-cycle clock input, COM = V
Dual Universal Switched-Capacitor Filters
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
DD
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
DD
O
CLK to GND............................................-0.3V to (V
16-Pin QSOP (derate 8.30mW/°C above +70°C).........667mW
Temperature Coefficient
_______________________________________________________________________________________
to GND ..............................................................-0.3V to +6V
= EXTCLK = +5V, f
PARAMETER
CLK
= 625kHz, T
A
= +70°C)
SYMBOL
f
CLK
V
R
V
V
V
f
f
OSC
COM
CLK
COM
OS1
OS2
OS3
f
O
A
/f
= T
O
MIN
Mode 1
Mode 1, R1 = R3 = 50kΩ , R2 = 10kΩ,
Q = 5, deviation from 100:1
M od e 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
IN
to T
= 10kHz
DD
MAX
+ 0.3V)
DD
, 10kΩ || 50pF load to V
/2. Typical values are at T
CONDITIONS
COM
OSC
OSC
Operating Temperature Range
Die Temperature ..............................................................+150°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
= 0 to V
CLK
MAX749_CEE ....................................................0°C to +70°C
MAX749_EEE ..................................................-40°C to +85°C
= 1000pF
= 100pF
DD
DD
/2 at LP_, BP_, and N_/HP_, SHDN = V
A
= +25°C, unless otherwise noted.) (Note 1)
V
DD
V
V
MIN
- 0.5
- 0.2
140
DD
DD
0.2
95
- 0.5
/2
/2
0.001 to
V
V
TYP
±0.2
±0.2
±0.1
±0.1
1.35
250
200
135
-60
DD
DD
40
±1
±5
±3
±4
±4
60
4
/2
/2
V
±12.5
V
V
D D
MAX
+ 0.5
+ 0.2
±0.7
±0.5
±15
±30
325
±10
175
DD
DD
±2
- 0.2
/2
/2
DD
ppm/°C
ppm/°C
UNITS
µV
µV
, 0.1µF
MHz
MHz
kHz
kHz
mV
dB
kΩ
µA
%
%
%
V
RMS
RMS
V
V