TEA6845AH Просмотр технического описания (PDF) - Philips Electronics

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TEA6845AH

New In Car Entertainment (NICE) car radio

Philips Electronics 

Philips Semiconductors

New In Car Entertainment (NICE) car radio

Product specification

TEA6845AH; TEA6845H

SYMBOL

PARAMETER

RR

ripple rejection

RDS update

CONDITIONS

VDDA1(ripple) = 100 mV (RMS);

fripple = 100 Hz

MIN.

−

TYP.

40

MAX.

−

Output: pin AFHOLD

Isink(max)

maximum sink current

Output: pin AFSAMPLE

Isink(max)

maximum sink current

Test mode; note 3

after first bus transmission 1.0

with AF = 1 (start of RDS

update); Vo = 0.5 V

no RDS update in progress; 1.0

Vo = 0.5 V

1.2

1.4

1.2

1.4

Temperature compensation diode: pin DAATD

Vi(ext)

external input voltage to

clock state machine

VDAATD(L) = 2.5 V;

VDAATD(H) = 3.5 V

2.5

−

3.5

Clock input: pin SCL

Vi(ext)

external input voltage to VSCL(L) = 0 V; VSCL(H) = 5 V 0

clock DAA

−

5

Time constant output: pin T1AMAGC

Vpulse

enabling voltage of load

PLL signal

pin fref in test mode

5.1

6

6.9

Notes

1. Measured between pins XTAL1 and XTAL2.

2.

DAA conversion gain formula: VDAAOUT =

2

×





0.75

×

1----2n---8--

+

0.25

×

(VDAAIN

+

VDAATD)

– VDAATD

where n = 0 to 127.

3. Reference frequency pin fref:

a) Rext = 68 kΩ connected to ground, activates the 2nd I2C-bus address

b) Rext = 100 kΩ connected to VDDA1, sets the IC into test mode.

4. Input parameters of AM mixer 1 measured between pins AMMIX1IN1 and AMMIX1IN2.

5. Output parameters of FM mixer and AM mixer 1 measured between pins MIX1OUT1 and MIX1OUT2.

6. Input parameters of AM mixer 2 measured between pins IFAMP1IN and IFAMP1DEC.

7. Output parameters of AM mixer 2 measured between pins AMMIX2OUT1 and AMMIX2OUT2.

8. Input parameters of AM IF2 measured between pins AMIF2IN and AMIF2DEC.

9. Input parameters of FM mixer measured between pins FMMIXIN1 and FMMIXIN2.

10. Input parameters of IF amplifier 1 measured between pins IFAMP1IN and IFAMP1DEC.

11. Input parameters of IF amplifier 2 measured between pins IFAMP2IN and IFAMP2DEC.

12. Input parameters of FM limiter measured between pins FMLIMIN and FMLIMDEC.

UNIT

dB

mA

mA

V

V

V

2001 Apr 12

24

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