TDA8722 Philips Semiconductors, TDA8722 Datasheet - Page 11

• Manufacturer Part Number: TDA8722
• Description: I2C-bus programmable modulator for negative video modulation and FM sound
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Jun 23
S/N audio audio signal-to-noise ratio
f
P/S
Channel characteristics
f
V
SPO
RF
SC
SC
f
IM
Charge pump output (CP)
I
V
I
Amplifier output (AMP)
G
V
Crystal oscillator characteristics (XTAL)
Z
SYMBOL
audio
RF
ref
8
OZ
P/S
V
9
RF
7
7sat
I
negative video modulation and FM sound
2
RF
sh
sh
th
C-bus programmable modulator for
frequency response of the audio signal
picture-to-sound ratio
picture-to-sound ratio range
RF frequency range
output level on RFA and RFB
difference between the level of
modulated carrier and the level of the
unmodulated carrier
spurious outside channel
RF second harmonic level on
asymmetrical output
sound carrier second harmonic level
sound carrier third harmonic level
video signal harmonics
reference frequency spurious
chrominance beat
output current
output voltage
OFF-state leakage current
amplifier current gain
output saturation voltage
oscillator input impedance
PARAMETER
note 6
note 7
no audio signal;
FM = 5.5 MHz;
C17 = 15 pF
no audio signal;
FM = 5.5 MHz;
0 pF
using tank circuit of Fig.7
asymmetrical output
loaded with 75 ;
f = 471.25 to 855.25 MHz
measurement is made
during synchronization
pulse for the modulated
carrier
note 8
f
f
f
C17 = 15 pF;
f
f
C17 = 15 pF;
f
f
note 9
f
note 10
in lock
V
T2 = 1
V
V
T2 = 1
RF
RF
s
RF
s
RF
s
p
CP
CP
CP
= 5.5 MHz;
= 5.5 MHz;
= 5.5 MHz; C17 = 15 pF
+ 31.25 kHz
11
= 471.25 MHz
= 855.25 MHz
< 700 MHz
> 700 MHz
= 2 V; T0 = 1; T1 = 1;
= 2 V; I
= 0 V; T0 = 1; T1 = 0;
CONDITIONS
C17
AMP
39 pF
= 10 A
45
471.25
77
0
1.5
1
16
18
MIN.
50
80
1
4000
140
13
62
30
20
65
63
65
60
65
65
100
TYP.
Product specification
TDA8722
+1
855.25 MHz
83
2
2.5
10
200
MAX.
10
10
25
15
60
58
60
55
60
60
500
dB
dB
dB
dB
dB V
dB
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
V
nA
mV
UNIT
A