MAX4699 Просмотр технического описания (PDF) - Maxim Integrated
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MAX4699 Datasheet PDF : 11 Pages
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Low-Voltage, Dual DPDT/Quad SPDT
Analog Switches in QFN
TQFN-EP PIN
MAX4699/
MAX4701
MAX4702
1
1
—
2
2
—
3
3
4
4
5
5
6
6
7
7
8
8
9
9
—
10
10
—
11
11
12
12
13
13
14
14
15
15
16
16
—
—
Pin Description
TSSOP PIN
MAX4701 MAX4702
NAME
FUNCTION
3
3
NC1 Analog Switch 1—Normally Closed Terminal
—
4
IN Digital Control Input Switch 1, 2, 3, and 4
4
—
IN1, IN2 Digital Control Input Switch 1 and 2
5
5
NO2 Analog Switch 2—Normally Open Terminal
6
6
COM2 Analog Switch 2—Common Terminal
7
7
NC2 Analog Switch 2—Normally Closed Terminal
8
8
GND Ground
9
9
NO3 Analog Switch 3—Normally Open Terminal
10
10
COM3 Analog Switch 3—Common Terminal
11
11
NC3 Analog Switch 3—Normally Closed Terminal
—
12
VL Logic Power-Supply Input
12
—
IN3, IN4 Digital Control Input Switch 3 and 4
13
13
NO4 Analog Switch 4—Normally Open Terminal
14
14
COM4 Analog Switch 4—Common Terminal
15
15
NC4 Analog Switch 4—Normally Closed Terminal
16
16
V+ Positive Supply Voltage Input
1
1
NO1 Analog Switch 1—Normally Open Terminal
2
2
COM1 Analog Switch 1—Common Terminal
—
—
EP Exposed Pad (TQFN Only). Connect EP to GND.
Detailed Description
The MAX4699/MAX4701 are low-voltage CMOS analog
switches that operate from a single +1.8V to +5.5V
power supply. The MAX4702 requires an additional
logic supply that allows for setting lower logic thresh-
olds. The MAX4699/MAX4701 are double-pole/double-
throw (DPDT) devices. The MAX4702 is a quad
single-pole/double-throw (SPDT) device. These devices
feature a break-before-make switching, fast switching
speeds (with V+ = 5V: tON = 18ns max, tOFF = 9ns max
and with V+ = 3V: tON = 35ns, tOFF = 20) and rail-to-rail
signal handling. A logic input on the MAX4702 allows
for logic thresholds as low as 1.0V.
Applications Information
Analog Signal Levels
Analog signals that range over the entire supply voltage
(V+ to GND) can be passed with very little change in on-
resistance (see Typical Operating Characteristics). The
switches are bidirectional, so the NO, NC, and COM pins
can be used as either inputs or outputs.
POSITIVE SUPPLY
D1
V+
NO
COM
MAX4699
MAX4701
MAX4702
Vg
GND
D2
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
_______________________________________________________________________________________ 7
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