TDA8578 Ver la hoja de datos (PDF) - Philips Electronics
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TDA8578 Datasheet PDF : 13 Pages
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Philips Semiconductors
Dual common-mode rejection differential
line receiver
Product specification
TDA8578
AC CHARACTERISTICS
VCC = 8.5 V; f = 1 kHz; Tamb = 25 °C; in accordance with test circuit (see Fig.3); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
Gv
αcs
∆Gv
voltage gain
channel separation
channel unbalance
Rs = 5 kΩ
−0.5
0
70
80
−
−
+0.5
dB
−
dB
0.5
dB
fL
low frequency roll-off
fH
high frequency roll-off
Zi
input impedance
−1 dB; note 1
−1 dB
20
−
−
Hz
20
−
−
kHz
100
240
−
kΩ
Zo
Vi(max)
Vno
output impedance
maximum input voltage
noise output voltage
THD = 1%
Rs = 0 Ω; note 2
−
−
10
Ω
−
2
−
V
−
3.7
5
µV
VCM(rms)
common-mode input voltage
(RMS value)
−
−
1
V
CMRR
SVRR
common-mode rejection ratio
supply voltage ripple rejection
Rs = 5 kΩ
Rs = 0 Ω; note 3
note 4
66
70
−
dB
−
80
−
dB
55
65
−
dB
note 5
−
60
−
dB
THD
total harmonic distortion
Vi = 1 V
−
Vi = 1 V;
−
f = 20 Hz to 20 kHz
0.02
−
%
−
0.1
%
THDmax total harmonic distortion at
Vi = 1 V; RL = 150 Ω
−
−
1
%
maximum output current
Notes
1. Frequency response externally fixed by the input coupling capacitors.
2. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz (unweighted).
3. The common-mode rejection ratio is measured at the output, with a voltage source of 1 V (RMS), in accordance with
test circuit (see Fig.3), while VINL and VINR are short-circuited. Frequencies between 100 Hz and 100 kHz.
4. Ripple rejection is measured at the output, with Rs = 2 kΩ; f = 1 kHz and a ripple amplitude of 2 V (p-p).
5. Ripple rejection is measured at the output, with Rs = 0 Ω up to 2 kΩ and f = 100 Hz to 20 kHz; maximum ripple
amplitude of 2 V (p-p).
1995 Dec 15
5
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