ANALOG PRODUCTS DIVISION

561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288

www.protekanalog.com

71

PA4101

PUNK with µP Supervisor

95000 Rev. 0. 01/08

NOT FOR USE IN LIFE SUPPORT SYSTEMS

Mute Operating Conditions

Limit

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Mute release delay

Mute Control=VIL

Set by ext. capacitor CM

10

300

mS

Soft mute fall/rise time

Mute Control transitions to VIH. Set by ext.

capacitor CEXT

1

300

mS

Mute ON Delay

Power drops by 10%

5

μS

NFETV

NFET open drain volt

12

V

Pin Out

Pin

Name

Function

1

RESET

Inverted Reset output from the voltage supervisor

2

RESET

Reset output from the voltage supervisory circuit.

3

VCC

Positive power supply. 2.7V to 5.5V ±10%

4

MCUVCC

Microprocessor power supply

5

RCS

Power On mute delay resistor-capacitor connection.

6

MUTECONT

Mute control signal from microprocessor.

8

GND

Ground.

9

MUTE1

Open Drain output of NFET 1

10

MUTE2

Open Drain output of NFET 2

12

SMUTEOUT

Soft Mute OUT for multiple channels.

13

CHIPOP

Supply voltage selector. Connect to GND for 2.7V, VCC for 5.5V.

14

CEXT

Soft mute delay capacitor.

Operation Of Supervisor Circuit.

The reset input of a µP initializes the device into a known

state. The PA4101 supervisor circuitry asserts a forced reset

output to prevent code execution errors during Power-up,

power-down and brownout conditions.

threshold, an internal timer maintains the output for the reset

period timeout. After this interval, reset goes high.

threshold for longer than the reset timeout period. After this

time the reset release

Supervisor Application

RESET

GND

R

C

RESET