Rainbow Electronics MAX7427 - Manual (Page 3)

MAX7426/MAX7427
5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
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5th-Order, Lowpass, Elliptic,
Switched-Capacitor Filters
ELECTRICAL CHARACTERISTICS—MAX7426 (continued)
(V DD = +5V, filter output measured at OUT, 10k Ω || 50pF load to GND at OUT, SHDN = V DD , OS = COM, 0.1µF from COM to GND,
f CLK = 100kHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7427
(V DD = +3V, filter output measured at OUT pin, 10k Ω || 50pF load to GND at OUT, SHDN = V DD , OS = COM, 0.1µF from COM to
GND, f CLK = 100kHz, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
CONDITIONS MIN TYP MAX SYMBOL PARAMETER
Measured at DC
SHDN = GND
Operating mode, no load
0.5 V SDL
SHDN Input Low
4.5 V SDH
SHDN Input High
70 PSRR Power-Supply Rejection Ratio
0.2 1 I SHDN Shutdown Current
0.8 1.0 Supply Current I DD
4.5 5.5 V
DD
Supply Voltage
V
V
dB
µA
mA
V
UNITS
SHDN Input Leakage Current V SHDN = 0 to V
DD
±0.2 ±10 µA
V
OS
Input Voltage Range at OS
90 130 R COM Input Resistance at COM k Ω
(Note 1)
T A = +25°C
Measured with respect to COM
OS to OUT
f IN = 200Hz, V IN = 2.5Vp-p,
measurement bandwidth = 22kHz
V IN = V COM = V DD / 2
V COM = V DD / 2 (Note 2)
CONDITIONS
50 500 C L
10 1 R L Resistance Output Load Drive
3 Clock Feedthrough
±0.1
V DD
- 0.1
V DD V DD
+ 0.1
2 2 2
V
COM
COM Voltage Range
100:1 f CLK/ f C Clock-to-Corner Ratio
0.001 to 12 f C Corner-Frequency Range
+1 A
OS
Offset Voltage Gain
-79 THD+N
Total Harmonic Distortion plus
Noise
10 Clock-to-Corner Tempco
0.25 V DD - 0.25 Output Voltage Range
±4 ±25 V OFFSET Output Offset Voltage
0 0.2 0.4
DC Insertion Gain with Output
Offset Removed
MIN TYP MAX SYMBOL PARAMETER
pF
k Ω
mVp-p
V
V
V/V
dB
dB
mV
V
ppm/°C
kHz
UNITS
Maximum Capacitive Load
at OUT
Input Leakage Current at COM SHDN = GND, V
COM
= 0 to V
DD
±0.2 ±10 µA
Input Leakage Current at OS V OS = 0 to V DD ±0.2 ±10 µA
POWER REQUIREMENTS
SHUTDOWN
FILTER CHARACTERISTICS