TDA8578T datasheet(5/13 Pages) PHILIPS

Part #	TDA8578T

Description	Dual common-mode rejection differential line receiver

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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5 / 13 page

1995 Dec 15

5

Philips Semiconductors

Product speciﬁcation

Dual common-mode rejection differential

line receiver

TDA8578

AC CHARACTERISTICS

VCC = 8.5 V; f = 1 kHz; Tamb =25 °C; in accordance with test circuit (see Fig.3); unless otherwise speciﬁed.

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 =2kΩ; 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).

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Gv

voltage gain

−0.5

0

+0.5

dB

α

cs

channel separation

Rs =5kΩ

70

80

−

dB

∆G

v

channel unbalance

−−

0.5

dB

fL

low frequency roll-off

−1 dB; note 1

20

−−

Hz

fH

high frequency roll-off

−1dB

20

−−

kHz

Z

i

input impedance

100

240

−

k

Ω

Zo

output impedance

−−

10

Ω

Vi(max)

maximum input voltage

THD = 1%

−

2

−

V

Vno

noise output voltage

Rs =0 Ω; note 2

−

3.7

5

µV

VCM(rms)

common-mode input voltage

(RMS value)

−−

1V

CMRR

common-mode rejection ratio

Rs =5kΩ

66

70

−

dB

Rs =0 Ω; note 3

−

80

−

dB

SVRR

supply voltage ripple rejection

note 4

55

65

−

dB

note 5

−

60

−

dB

THD

total harmonic distortion

Vi =1V

−

0.02

−

%

Vi =1V;

f = 20 Hz to 20 kHz

−−

0.1

%

THDmax

total harmonic distortion at

maximum output current

Vi =1V; RL = 150 Ω−

−

1%

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