PA4101 PROTEC [Protek Devices], PA4101 Datasheet

no-image

PA4101

Manufacturer Part Number
PA4101
Description
PUNK with ?P Supervisor
Manufacturer
PROTEC [Protek Devices]
Datasheet
MUTE
Features
Applications
Pin Layout
RESET
RESET
V
MCUV
R
NC
Functional Diagram Typical Application
95000 Rev. 0. 01/08
NOT FOR USE IN LIFE SUPPORT SYSTEMS
CC
CS
Precision supply voltage monitoring
Reset Timeout Delay
36dB mute attenuation
2.7V to 5.5V single-supply operation
ESD protected outputs
Low supply current
Soft Mute out for driving additional channels
SOIC 14
Set-top boxes
Cell phones
PDA’s
Portable DVD players
Portable MP3 players
Notebook Audio
Critical µP Power Monitoring
CONT
CC
ANALOG PRODUCTS DIVISION
1
2
3
4
5
6
7
561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288
Vcc
C3 0.5µF
R1 500KΩ
14
13
12
10
11
9
8
µP Mute
Control
Chip
C2 10µF
OP
RCS
C
SMUTE
MUTE
MUTE
GND
C
CHIP
NC
EXT
EXT
5
14
13
6
OP
8
2
1
C1 0.1µF
µP V
OUT
4
PA4101
CC
RST
Vcc
2
3
RSET
SMUTEOUT
1
12
www.protekanalog.com
10
9
Right Input
Mute2
Mute1
Left Input
R2 220Ω
R4 220Ω
General Description
The PA4101 is a low power monolithic CMOS mixed signal
device. Its function is to control power supply transition noise
in audio circuits and systems. It requires very few external
components for its operation and works from low to medium
power supply voltages of 2.7V to 5.5V. As the power supply
ramps ON or OFF, the PA4101 ensures that audio inputs to
succeeding amplifiers are switched to a convenient low
impedance voltage rail. This causes the amplifiers to remain
silent as the power supply changes state (from ON to OFF
and vice versa).
Also included in the device is a digital control pin which can be
used by a control device such as a micro controller or a micro-
processor or any other digital controller to enable the audio
mute function. This supervisory circuit provides maximum
flexibility for monitoring power supplies and battery controlled
functions in systems without backup batteries.
A Reset is asserted during power up, power down and
brownout conditions. RESET is guaranteed down to Vcc of
1.0V.
Low line output. The early warning indicator goes low when
the supply voltage drops to a value 2% higher than the reset
threshold voltage
The PA4101 consumes less than 50μA of supply current while
providing more than 36dB of mute attenuation at the audio
lines. ESD (Human Body Model) protection circuitry on the
outputs protects the PA4101 and devices further up the signal
chain.
The PA4101 is available as a 14L SOIC package and is
specified for operation over the -40°C to +85°C temperature
range.
C4 47µF
C5 47µF
R3 10KΩ
R5 10KΩ
PUNK with µP Supervisor
Right Output
Left Output
PA4101
69

Related parts for PA4101

PA4101 Summary of contents

Page 1

... ESD (Human Body Model) protection circuitry on the outputs protects the PA4101 and devices further up the signal 2 chain. 1 The PA4101 is available as a 14L SOIC package and is specified for operation over the -40°C to +85°C temperature range. RST RSET µP V ...

Page 2

... IOH=100μA VDD-0.1 IOL=-100μA IIH=1μA VDD-0.3 IIL=1μA VDD=2.7V, VDFET=0.4V Condition Min Operating VDD falling - degC -2.5 VDD=2.7V 17 VDD=5.5V 36 VDD falling at 1mv/μs 44 www.protekanalog.com PA4101 Limit Unit Typ Max 5 ° 0.3 V 1.5 Ω Limit Unit ...

Page 3

... 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. RESET is valid for V >1Volt. Once V ...

Page 4

... E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288 95000 Rev. 0. 01/08 NOT FOR USE IN LIFE SUPPORT SYSTEMS V RSTH V RST Figure 1: Startup Pop-Noise Reduction Figure 2: Shutdown Pop-Noise Reduction www.protekanalog.com PUNK with µP Supervisor Figure 3: SOFT mute operation PA4101 72 ...

Page 5

... R19 C15 100Ω 10µF 10 MUTE 2 12 SMUTEOUT 9 MUTE MUTECONT R13 240K GND CEXT 14 C12 8 1µF R21 U2 10K 74LS04 S1 www.protekanalog.com PA4101 PUNK with µP Supervisor LINE OUT LEFT LINE OUT RIGHT R20 R18 10K 10K 73 ...

Page 6

... Figure 6: Startup Pop-Noise with PUNK 561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288 95000 Rev. 0. 01/08 NOT FOR USE IN LIFE SUPPORT SYSTEMS PUNK with µP Supervisor Figure 7: Shutdown Pop-Noise with PUNK Figure8: Audio Mute Enable Figure 9: Audio Mute Disable www.protekanalog.com PA4101 74 ...

Page 7

... NOT FOR USE IN LIFE SUPPORT SYSTEMS END VIEW L2 P3 0.050” TYP g 0.160” ± 0.005” 0.045” ± 0.005” Recommended Pattern Layout www.protekanalog.com PA4101 PUNK with µP Supervisor Inches Dim MIN TYP P1 0.337 0.341 P2 0.230 0.238 P3 0.060 ...

Related keywords