STABP01D Datasheet STABP01, STABP01D | P1-P3

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STABP01

December 2002

■ BASH® LICENCE REQUIRED

DESCRIPTION

The STABP01 processor is used to control the

BASH® Digital Converter. When used in conjunction

with BASH® amplifiers a fully integrated high efficien-

cy power amplifier is realized.

By analyzing the audio input, the Processor deter-

mines the appropriate on/off events and generates a

digital pulse for the Digital Converter. The converter

turns this pulse into a power signal that feeds the

power amplifier. The feedback system allows the pro-

cessor to constantly adapt to the audio signal and re-

generate the digital pulse thereby maintaining a

constant voltage across the output devices.

ORDERING NUMBERS:

STABP01 (DIP20)

STABP01D (SO20)

SO20DIP20

DIGITAL PROCESSOR

BLOCK DIAGRAM

10V

OUTPUT

GROUND1

SOFT SW RESET

10V

COMP/3

BUFFER

2200pF 50K 20K

R162

17R

C51

2200pF

CURRENT SENSE

COMPARATOR

ONE SHOT

SIGNAL

OPEN DRAIN

OUTPUT

DISCHARGE

(RESET)

TRANSISTOR

FAST ATTACK

CONTROL

ERROR

AMP

COMP

CURRENT_SENSE

V+

POWER SUPPLY1

CLOCK

250Hz

RESET

CLK

RESET

CLK

INTERNAL

CIRCUIT

UVLO: 7V = on

5V = off

SOFT SWITCH

PWM LATCH

VREF

BUFFER OUT

REC_OUT

BUFFER IN

FA IN

1V10V

10V

DEAD TIME

10V

D00AU1219

OUTPUT

GROUND2

ONE

SHOT

DELAY

POWER_VS2

ONE SHOT DUTY ACCEL

Obsolete Product(s) - Obsolete Product(s)

STABP01

2/7

ABSOLUTE MAXIMUM RATINGS

THERMAL DATA

PIN CONNECTION

TYPICAL APPLICATION CIRCUIT

Symbol Parameter Value Unit

Vs Supply Voltage 10.5 V

Io Output Current ±0.6 A

Eo Output Energy(capacitive load) 5 µJ

Vi Analog Input Voltage -0.3 to 8 V

Io Error Amplifier Output Sink Current 10 mA

tot

Power Dissipation at Tamb 500 mW

stg

Storage Ambient Temperature -65 to 150 °C

Lead Temperature (soldering 10s) 300 °C

Operating Temperature Range -25 to 85 °C

Symbol Parameter SO20 DIP20 Unit

th j-amb

Thermal Resistance junction-ambient soldered on PCB 95 90 °C/W

BUFFER OUT

V+

COMP

CURRENT SENSE

POWER SUPPLY2

DEAD TIME

MAIN OUTPUT

GROUND2

9 GROUND1

SOFT SW OUT

POWER SUPPLY1

ONE SHOT

ONE SHOT DELAY

DUTY ACCEL

RECTIFIER

FAST ATTACK

BUFFER IN20

D00AU1217B

CLOCK(RT/CT) 10 SOFT SW RESET11

STABP01

PROCESSOR

BUCK

CONVERTER

STA575

POWER AMP

POWER

SUPPLY

REFERENCE SIGNAL

AUDIO INPUT

PROTECTION

SIGNAL

D00AU1218

Obsolete Product(s) - Obsolete Product(s)

3/7

STABP01

ELECTRICAL CHARACTERISTCS

(Vs = 10V; Rt = 22k

Ω

; Ct = 2.2nF; t = 25°C unless otherwise specified)

Symbol Parameter Test Conditions Min Typ Max Unit

OSCILLATOR SECTION

fs Initial Accuracy (*) Tj=25C, SW Out Off 225 250 300 kHz

Ts Temperature Stability Tmin<Tamb<Tmax 5 %

Amplitude Vpin10 Peak to Peak 0.5 V

ERROR AMP SECTION

Ib Input Bias Current 1 µA

VOL

Open loop Gain 65 90 dB

B Unity Gain Bandwidth 0.7 1 MHz

SVR Supply Voltage Rejection 6<Vs<10V 60 70 dB

CMR

Input Common Mode Range 0 8 V

MRR

Common Mode Rejection Ratio 90 dB

Output Voltage Range I = 1mA 0.5 8.5 V

CURRENT SENSE SECTION

Gv Gain V4/V5, V5 <1V,

Duty Cycle = 80%

2.7 3 3.3 V/V

V5 Maximum Input Signal V4 = 5V 0.9 1 1.1 V

Ib Input Bias Current V5 <0.9V, 1 µA

Odt Delay to Output (minimum output

pulse)

150 300 ns

OUTPUT SECTION

Output Low Level Isink=20mA

Isink=200mA

0.1

1.5

0.4

2.2

Output High Level Isource=20mA

Isource=200mA

9.6

7.8

9.9

8.5

tr Rise Time Tj=25°C CL=1nF 50 150 ns

tf Fall Time Tj=25°C CL=1nF 50 150 ns

UNDER-VOLTAGE LOCKOUT SECTION

UVstart Start Threshold 6.3 7 7.7 V

UVstop Min Operating Voltage

After Turn-on

4.5 5 5.5 V

TOTAL STANDBY CURRENT

Ist Start-up Current 0.5 1 mA

Is Operating Supply Current 10 20 mA

Obsolete Product(s) - Obsolete Product(s)

P1-P3 P4-P6 P7-P7

STABP01D

Mfr. #:

Buy STABP01D

Manufacturer:

STMicroelectronics

Description:

Audio DSPs BASH Digital Procsr

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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STABP01D

STABP01D

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