TDA8575 Datasheet, PDF(8/16 Page) NXP Semiconductors – Ground noise isolation amplifier

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TDA8575 Datasheet, PDF (8/16 Pages) NXP Semiconductors – Ground noise isolation amplifier

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Philips Semiconductors

Ground noise isolation ampliï¬er

Preliminary speciï¬cation

TDA8575

AC CHARACTERISTICS

VCC = 8.5 V; f = 1 kHz; Rs = 0 kâ¦; RL = 10 kâ¦; Tamb = 25 Â°C; in accordance with application circuit (see Fig.9).

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Î±cs

ï£´âGvï£´

fro(L)

fro(H)

ï£´Ziï£´

ï£´Zoï£´

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 kâ¦; note 1

â1 dB; note 2

â1 dB

THD = 1%

unweighted; note 3

Vi(rms) = 1 V

Vi(rms) = 1 V;

f = 20 Hz to 20 kHz

â0.5 0

+0.5 dB

0.5

kHz

108 123 kâ¦

â¦

1.7

3.7

ÂµV

0.005 0.01 %

0.01 â

THDmax total harmonic distortion at maximum

Vi(rms) = 1 V; RL = 150 â¦ â

output current

Vi(cm)(rms) common-mode input voltage (RMS value)

CMRR common-mode rejection ratio

Rs = 5 kâ¦

Rs = 0 â¦; note 4

f = 100 Hz to 20 kHz

SVRR

supply voltage ripple rejection

Rs = 2 kâ¦; note 5

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 kâ¦.

1996 Jul 29

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