STV6432 datasheet(6/15 Pages) STMICROELECTRONICS

6 / 15 page

ELECTRICAL CHARACTERISTICS

STV6432

6/15

2.4

Audio Section

TAMB = 25° C, VCCV = 5 V, VCCB = 5 V, VCCA = 9 V

RGA = 600 Ω, RLOUTA = 10 kΩ, RGV = 75 Ω, RLOUTV = 150 Ω, unless otherwise specified.

Table 5: Audio Data

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

SVR100

Supply Voltage Rejection

VRIPPLE = 500 mVRMS at 120 Hz,

DECA filter cap = 47 µF

DECA filter cap = 220 µF

SVR1K

Supply Voltage Rejection

VRIPPLE = 500 mVRMS at 1 kHz

DECA filter cap = 220 µF

VINDC

Input DC Level

VCCA = 9 V

VCCA/2

VINAC

Input Signal Amplitude

VRMS

RIN

Input Resistance

Ω

RINmatch

Input Resistance Matching

±2

±10

FRANGE

Bandwidth

-3 dB, VIN = 0.5 VRMS

RLOAD = 10 kΩ

kHz

Flatness

Spread of Gain in Audio Band

(Peak-to-Peak)

VIN =0.5 VRMS

20 Hz to 20 kHz

±0.5

Channel Separation

between L & R TV outputs

VIN =0.5 VRMS at 1 kHz on one

input,

RLOAD = 10 kΩ on both outputs

Channel Isolation from video inputs

VIN = 1 VPP at 15 kHz on one

video input

VOUT

Output DC Level

VCCA = 9 V

VCCA/2

ROUT

Output Resistance

120

Ω

PHD

Phase Difference

VIN = 1 VRMS at 1 kHz on each

input channel

Degree

ASN

Audio Signal/Noise ratio

VIN = 1 VRMS

A weighted at 1 kHz, Gain = 6 dB

eNI1

1. eNI is the total unweighted output noise in a 20 Hz to 20 kHz bandwidth divided by the gain.

Equivalent RMS Input Voltage Noise

BW = 20 Hz at 20 kHz

unweighted, Gain = 6 dB

5µV

GAL

6 dB Gain

VIN = 0.5 VRMS, RLOAD = 10 kΩ

5.5

+6.5

GMA

Gain matching between Left/Right

outputs

VIN = 0.5 VRMS at 1 kHz

Gain = 6 dB

-1

THD

Total Harmonic Distortion

ENC Input with Gain = 6 dB

VIN = 0.5 VRMS at 1 kHz

Low Pass Filter at 80 kHz

0.005

0.05

VCL

Output Clipping Level

THD = 0.2% at 1 kHz,

2.1

2.3

VRMS

Output Load Resistance

VIN = 1 VRMS, THD = 0.3%,

22.25

Ω

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