TDA8575T Просмотр технического описания (PDF) - Philips Electronics
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TDA8575T Datasheet PDF : 16 Pages
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Philips Semiconductors
Ground noise isolation amplifier
Preliminary specification
TDA8575
AC CHARACTERISTICS
VCC = 8.5 V; f = 1 kHz; Rs = 0 kΩ; RL = 10 kΩ; Tamb = 25 °C; in accordance with application circuit (see Fig.9).
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Gv
αcs
∆Gv
fro(L)
fro(H)
Zi
Zo
Vi(rms)(max)
Vno
THD
voltage gain
channel separation
channel unbalance
low frequency roll-off
high frequency roll-off
input impedance
output impedance
maximum input voltage (RMS value)
noise output voltage
total harmonic distortion
Rs = 5 kΩ; note 1
−1 dB; note 2
−1 dB
THD = 1%
unweighted; note 3
Vi(rms) = 1 V
Vi(rms) = 1 V;
f = 20 Hz to 20 kHz
−0.5 0
+0.5 dB
70
80
−
dB
−
−
0.5
dB
−
−
20
Hz
20
−
−
kHz
80
108 123 kΩ
−
−
10
Ω
−
1.7
−
V
−
3.7
5
µV
−
0.005 0.01 %
−
0.01 −
%
THDmax total harmonic distortion at maximum
Vi(rms) = 1 V; RL = 150 Ω −
−
1
%
output current
Vi(cm)(rms) common-mode input voltage (RMS value)
−
−
1
V
CMRR common-mode rejection ratio
Rs = 5 kΩ
66
80
−
dB
Rs = 0 Ω; note 4
−
80
−
dB
f = 100 Hz to 20 kHz
SVRR
supply voltage ripple rejection
Rs = 2 kΩ; note 5
55
−
−
dB
Rs = 2 kΩ; note 5
−
60
−
dB
f = 20 Hz to 20 kHz
Notes
1. The channel separation is dependent on the capacitor C2 connected to the IN- input. The channel separation for low
frequencies (<1 kHz) can be increased by using a larger capacitance for C2.
2. The frequency response is externally fixed by the input and output coupling capacitors.
3. The noise output voltage is measured in a bandwidth of 20 Hz up to 20 kHz, unweighted.
4. The common mode rejection ratio is measured at the output with a voltage source Vcm(rms) = 1 V and both
Vi(L) and Vi(R) short-circuited according to Fig.9. The common mode rejection is dependent on the capacitor C2
connected to the IN- input. The common mode rejection for low frequencies (<1 kHz) can be increased by using a
larger capacitance for C2.
5. Supply voltage ripple rejection is measured at the output using a ripple amplitude of 2 V (p-p).
The source resistance Rs = 2 kΩ.
1996 Jul 29
8
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