TDA8822T 查看數據表（PDF） - Philips Electronics

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TDA8822T

Universal I2C-bus programmable RF modulator

Philips Electronics 

Philips Semiconductors

Universal I2C-bus programmable RF

modulator

Preliminary specification

TDA8822

QUICK REFERENCE DATA

VCCA = VCCD = 5 V; Tamb = 25 °C; in PAL B/G, PAL I, PAL D/K or NTSC; MD setting = 4; DEV setting = 2;

PS setting = 1; video input signal = 500 mV (p-p) EBU colour bars; audio input signal = 45 mV (p-p); 1 kHz sine wave;

unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

VCCA

VCCD

ICC(tot)

md

P/S

VRF

fsc

∆fsc

analog supply voltage

4.5 5.0

digital supply voltage

4.5 5.0

total supply current

−

60

modulation depth adjustment typical value for MD setting between 72.5 −

range

0 and 7

picture-to-sound ratio

adjustment range

typical value for PS setting between −18 −

0 and 7

RF output voltage level

frequency between 45 and 860 MHz 77

80

asymmetrical on a 75 Ω load

sound subcarrier frequency

4.5

−

sound subcarrier frequency for B/G, I, D/K, SC setting = 1, 2 or 3; 20

−

deviation range

typical value for DEV setting between

0 and 7

for M, N, SC setting = 0; typical value 10

−

for DEV setting between 0 and 7

5.5 V

5.5 V

72

mA

90.0 %

−11 dB

83

dBµV

6.5 MHz

45

kHz

22.5 kHz

1997 Jan 08

3

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