TDA3856 Datasheet, PDF (7/17 Pages) NXP Semiconductors – Quasi-split sound processor for all standards

Philips Semiconductors
Quasi-split sound processor for all standards
Product specification
TDA3856
SYMBOL
PARAMETER
V_I
V_{i IF (RMS)}
V₃
∆G_v
B
DC potential, voltage (pins 1, 2, 23, 24)
maximum input signal (RMS value)
input signal sensitivity B/G standard
(RMS value, pins 32-24)
input signal sensitivity L standard
(RMS value, pins 1-2)
voltage for gain control (pin 3)
IF gain control
IF bandwidth
Resonance amplifier (pins 12-13)
V_{o (p-p)}
R_12-13
L
C
Q_L
V_{12, 13}
vision carrier amplitude
(peak-to-peak value)
operating resistance
inductance
capacitance
Q-factor of resonant circuit
DC voltage (pins 12 and 13)
Intercarrier mixer output (pin 17)
V_{o (RMS)}
B
output signal for 5.5 MHz (RMS value)
output signal for 5.74 MHz (RMS value)
IF bandwidth
V_VID/V₁₇
V_VC(RMS)
residual video AM on intercarrier
residual vision carrier (RMS value)
R₁₇
output resistance (emitter follower)
I_o
allowable AC output current (pin 17)
I₁₇
allowable DC output current
V₁₇
DC voltage
Limiting amplifiers (pins 15 and 19)
V_{i (RMS)}
minimum input signal (RMS value)
maximum input signal (RMS value)
R_{15, 19}
V_{15, 19}
V_{i (RMS)}
input resistance
DC voltage
level detector threshold for no muting
(RMS value, pin 19)
∆V_i
hysteresis of level detector
CONDITIONS
V_o = +1 dB
−3 dB intercarrier signal
reduction at pin 17
−3 dB intercarrier signal
reduction at pin 9
−3 dB
f_o = 38.9 MHz
Figs 3 and 5
Q_o = 90
−1 dB
−3 dB
note 2
1st/2nd harmonic
(38.9/77.8 MHz)
1 mA emitter current
LC-circuit at pin 12, 13
adjusted to minimum
video content at pin 17
−3 dB AF signal
only 5.74 MHz channel
MIN. TYP. MAX. UNIT
−
1.75 −
V
70 100 −
mV
−
70 100 µV
−
70 100 µV
1.7 −
2.6
60 63 −
50 70 −
V
dB
MHz
−
270 −
mV
−
4
−
kΩ
−
0.247 −
µH
−
68 −
pF
−
40 −
−
V_P− 1 −
V
71 95 125 mV
32 43 56
mV
6
8.5 −
MHz
7
10 −
MHz
−
3
10
%
−
0.5 1
mV
−
30 −
Ω
−
−
±0.7 mA
−
−
−2
mA
1.5 1.75 2.0 V
−
300 450 µV
200 −
−
mV
450 560 700 Ω
−
0
−
V
0.8 1.2 1.7 mV
4
7
12
dB
June 1994
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