TDA3858 Datasheet, PDF (8/17 Pages) NXP Semiconductors – Quasi-split sound processor for all standards

Philips Semiconductors
Quasi-split sound processor for all standards
Product specification
TDA3858
SYMBOL
PARAMETER
CONDITIONS
MIN.
V₄
voltage for gain control (pin 4)
1.7
∆G_v
IF gain control
60
B
IF bandwidth
−3 dB
50
Resonance amplifier (pins 16-17)
V_{o (p-p)}
R_16-17
L
C
Q_L
V_{16, 17}
vision carrier amplitude
(peak-to-peak value)
operating resistance
inductance
capacitance
Q-factor of resonant circuit
DC voltage (pins 16 and 17)
f_o = 38.9 MHz
−
−
Figs 3 and 5
−
−
Q_o = 90
−
−
Intercarrier mixer output (pin 23)
V_o(RMS)
B
V_VID/V₂₃
V_{VC (RMS)}
R₂₃
I_o
I₂₃
V₂₃
output signal for 5.5 MHz (RMS
value)
output signal for 5.74 MHz
(RMS value)
IF bandwidth
residual video AM on intercarrier
residual vision carrier (RMS value)
output resistance (emitter follower)
allowable AC output current (pin 23)
allowable DC output current
DC voltage
71
32
−1 dB
6
−3 dB
7
note 2
−
1st/2nd harmonic −
(38.9/77.8 MHz)
1 mA emitter current −
−
−
LC-circuit at pin 16, 1.5
17 adjusted to
minimum video
content at pin 23
Limiting amplifiers (pins 21 and 25)
v_i(RMS)
R_{21, 25}
V_{21, 25}
V_i(RMS)
∆V_i
minimum input signal (RMS value) −3 dB AF signal
−
maximum input signal (RMS value)
200
input resistance
450
DC voltage
−
level detector threshold for no muting only 5.74 MHz
0.8
(RMS value, pin 25)
channel
hysteresis of level detector
4
TYP.
−
63
70
MAX.
2.6
−
−
UNIT
V
dB
MHz
270
−
mV
4
−
kΩ
0.247 −
µH
68
−
pF
40
−
V_P1− 1 −
V
95
125
43
56
8.5
−
10
−
3
10
0.5
1
30
−
−
±0.7
−
−2
1.75 2.0
mV
mV
MHz
MHz
%
mV
Ω
mA
mA
V
300
450
µV
−
−
mV
560
700
Ω
0
−
V
1.2
1.7
mV
7
12
dB
June 1994
8