TDA8722 Datasheet, PDF (3/28 Pages) NXP Semiconductors – I2C-bus programmable modulator for negative video modulation and FM sound

Philips Semiconductors
I²C-bus programmable modulator for
negative video modulation and FM sound
Product specification
TDA8722
QUICK REFERENCE DATA
V_DDA = V_DDD = 5 V; T_amb = 25 °C after the IC has reached thermal equilibrium; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V_DDA
V_DDD
I_DD
∆m
∆P/S
V_RF
δf
analog supply voltage
4.5
5.0
digital supply voltage
4.5
5.0
total supply current
normal mode
41
52
typical modulation depth range video level (pin 19) = 0.5 V (p-p); 65
−
note 1; see Fig.10
typical picture-to-sound level
range
note 2; see Fig.11
−18 −
RF output voltage level
asymmetrical on a 75 Ω load
frequency between
471.25 and 855.25 MHz
77
80
FM deviation on audio
subcarrier
f_i = 400 Hz; V₁ = 0.5 V (RMS);
20
25
before pre-emphasis filter
5.5
V
5.5
V
63
mA
90
%
−10 dB
83
dBµV
30
kHz
Notes
1. Value depends on value of resistor R17 (see Fig.7).
2. Value depends on value of capacitor C17 (see Fig.7).
1998 Jun 23
3