MAX7490CEE+T Maxim Integrated Products, MAX7490CEE+T Datasheet - Page 7

• Manufacturer Part Number: MAX7490CEE+T
• Description: IC FILTER SW CAP DUAL 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX7490CEE+T

• Filter Type: Universal Switched Capacitor
• Frequency - Cutoff Or Center: 40kHz
• Number Of Filters: 2
• Max-order: 2nd
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(V
R2 = 10kΩ, Q = 5, T
DD
-100
-110
-120
-30
-40
-50
-70
-20
-60
-80
-90
5.0
4.5
4.0
3.5
3.0
2.5
2.0
= +5V for MAX7490, V
1k
0
A = MODE 1
B = MODE 3
THD + NOISE vs. FREQUENCY
OUTPUT VOLTAGE SWING
4
vs. LOAD RESISTANCE
INPUT FREQUENCY (Hz)
Dual Universal Switched-Capacitor Filters
R
LOAD
V
V
DD
DD
A
MAX7490
8
_______________________________________________________________________________________
B
A
= 5V
= 3V
= +25°C, unless otherwise noted.)
(kΩ) TO COM
12
133
132
131
130
129
128
127
126
DD
3.0
= +3V for MAX7491, f
C
INTERNAL OSCILLATOR FREQUENCY
OSC
16
= 1000pF
3.5
vs. SUPPLY VOLTAGE
10k
20
4.0
V
DD
(V)
2500
2000
1500
1000
Typical Operating Characteristics (continued)
500
-10
-20
-30
-40
-50
-60
-70
-80
-90
4.5
0
CLK
0
0
V
THD + NOISE vs. INPUT VOLTAGE
DD
= 625kHz, V
5.0
INTERNAL OSCILLATOR PERIOD
0.5
= 5V
200
vs. SMALL CAPACITANCE
V
DD
INPUT VOLTAGE (Vp-p)
5.5
1.0
CAPACITANCE (pF)
= 3V
400
MAX7491
A
B
SHDN
1.5
600
144
142
140
138
136
134
132
130
128
126
124
2.0
= V
-40
C
INTERNAL OSCILLATOR FREQUENCY
A = MODE 1
B = MODE 3
EXTCLK
OSC
800
2.5
= 1000pF
-15
1000
vs. TEMPERATURE
3.0
= V
TEMPERATURE (°C)
10
DD
V
DD
, COM = V
V
DD
= 5V
160
140
120
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
80
60
40
20
= 3V
35
0
1
0
V
THD + NOISE vs. INPUT VOLTAGE
DD
INTERNAL OSCILLATOR PERIOD
60
DD
2
= 5V
vs. LARGE CAPACITANCE
1
/2, Mode 1, R3 = R1 = 50kΩ,
INPUT VOLTAGE (Vp-p)
V
DD
CAPACITANCE (nF)
85
3
= 3V
MAX7490
2
4
A
3
B
5
A = MODE 1
B = MODE 3
4
6
7
5
7