MAX4780 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX4780 Datasheet PDF : 11 Pages
| |||
0.7Ω, Low-Voltage, Quad 2:1 Analog
Multiplexers
Pin Description
PIN
MAX4780
MAX4784
TSSOP THIN QFN-EP TSSOP THIN QFN-EP
1
15
1
15
2
16
2
16
3
1
3
1
4
2
4
2
5
3
5
3
6
4
6
4
7
5
7
5
8
6
8
6
9
7
9
7
10
8
10
8
11
9
11
9
12
10
12
10
13
11
13
11
14
12
14
12
15
13
—
—
NAME
A0
NC1
NO1
COM1
NC2
NO2
COM2
GND
COM3
NO3
NC3
COM4
NO4
NC4
A1
—
—
15
13
EN
16
14
16
14
V+
—
—
—
—
EP
FUNCTION
Address Input
Normally Closed Terminal
Normally Open Terminal
Analog Switch Common Terminal
Normally Closed Terminal
Normally Open Terminal
Analog Switch Common Terminal
Ground
Analog Switch Common Terminal
Normally Open Terminal
Normally Closed Terminal
Analog Switch Common Terminal
Normally Open Terminal
Normally Closed Terminal
Address Input
Enable. Connect to GND for normal operation.
Connect to logic-level high to turn all switches off.
Positive Supply Voltage
Exposed Pad. Internally connected to GND. Connect to a large
ground plane to maximize thermal performance. Not intended as an
electrical connection point. (Thin QFN package only.)
Detailed Description
The MAX4780/MAX4784 are low 0.7Ω (at V+ = +2.7V)
on-resistance, low-voltage, quad 2:1 analog multiplexers/
demultiplexers that operate from a +1.6V to +4.2V single
supply. CMOS switch construction allows switching
analog signals that are within the supply voltage range
(GND to V+).
When powered from a +2.7V supply, the 0.7Ω RON
allows high continuous currents to be switched in a
variety of applications.
Applications Information
Proper power-supply sequencing is recommended for all
CMOS devices. Do not exceed the absolute maximum
ratings, because stresses beyond the listed ratings can
cause permanent damage to the devices. Always
sequence V+ on first, followed by NO_, NC_, or COM_.
Although it is not required, power-supply bypassing
improves noise margin and prevents switching noise
propagation from the V+ supply to other components. A
0.1µF capacitor, connected from V+ to GND, is adequate
for most applications.
Typical Application Circuit
RING TONE/
MELODY IC
AUDIO
CODEC
SYSTEM
CONTROLLER
MAX4780
INTERNAL
SPEAKER
RL = 8Ω
EXTERNAL
SPEAKER
RL = 8Ω OR 32Ω
VCC 1.6V TO 4.2V
_______________________________________________________________________________________ 7
Share Link: 