Philips TEA6845AH, TEA6845H Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TEA6845AH; TEA6845H

New In Car Entertainment (NICE) car radio

Product speciﬁcation File under Integrated Circuits, IC01

2001 Apr 12

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

CONTENTS

1 FEATURES 2 GENERAL DESCRIPTION 3 ORDERING INFORMATION 4 QUICK REFERENCE DATA 5 BLOCK DIAGRAM 6 PINNING 7 FUNCTIONAL DESCRIPTION

7.1 Oscillators

7.1.1 VCO

7.1.2 Crystal oscillator

7.1.3 PLL

7.2 FM signal channel

7.2.1 DAA

7.2.2 FM I/Q mixer

7.2.3 FM keyed AGC

7.2.4 FM IF amplifiers

7.2.5 FM demodulator

7.3 AM signal channel

7.3.1 AM tuner including mixer 1 and mixer 2

7.3.2 AM RF AGC and IF2 AGC

7.3.3 AM detector

7.3.4 AM AF or IF2 switch

7.3.5 AM noise detector and blanker

7.3.6 FM and AM level detector

7.4 Test mode 8 LIMITING VALUES 9 THERMAL CHARACTERISTICS 10 DC CHARACTERISTICS

11 AC CHARACTERISTICS 12 I2C-BUS PROTOCOL

12.1 I2C-bus specification

12.1.1 Test mode

12.1.2 Data transfer for the TEA6845

12.1.3 I2C-bus pull-up resistors

12.1.4 Frequency setting

12.2 I2C-bus protocol

12.2.1 Data transfer mode and IC address

12.2.2 Write mode: data byte 1

12.2.3 Write mode: data byte 2

12.2.4 Write mode: data byte 3

12.2.5 Write mode: data byte 4

12.2.6 Write mode: data byte 5

12.2.7 Write mode: data byte 6

12.2.8 Read mode: data byte 1 13 TEST AND APPLICATION INFORMATION 14 PACKAGE OUTLINES 15 SOLDERING

15.1 Introduction to soldering surface mount packages

15.2 Reflow soldering

15.3 Wave soldering

15.4 Manual soldering

15.5 Suitability of surface mount IC packages for wave and reflow soldering methods

16 DATA SHEET STATUS 17 DEFINITIONS 18 DISCLAIMERS 19 PURCHASE OF PHILIPS I2C COMPONENTS

2001 Apr 12 2

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

1 FEATURES

• FM mixer for conversion of FM RF from 65 to 108 MHz to IF of 10.7 MHz; the mixer provides inherent image rejection

• FM RF mixer can be set to receive weather band radio up to 162.55 MHz; weather band radio flag output

• AM mixer 1 for conversion of AM RF to AM IF1 of

10.7 MHz

• LC tuner oscillator providing mixer frequencies for FM mixer and AM mixer 1

• AM mixer 2 for conversion of AM IF1 to AM IF2 of 450 kHz

• Crystal oscillator providing mixer frequencies for AM mixer 2andreferenceforsynthesizerPLL,IF count, timing for Radio Data System (RDS) update and reference frequency for car audio signal processor ICs

• FastsynthesizerPLLtuning system with local control for inaudible RDS updating

• Timing function for RDS update algorithm and control signal output for car audio signal processor ICs (TEA688x, SAA77xx) or car radio integrated signal processor IC (TEF6890H)

• Digital auto alignment circuit for conversion of LC oscillator tuning voltage to controlled alignment voltage of FM antenna tank circuit

• AGC PIN diode drive circuit for FM RF AGC; AGC detection at FM mixer input; the AGC PIN diode drive can be activated by the I2C-bus as a local or distance function; AGC threshold is a programmable and keyed function switchable via the I2C-bus

• FM IF linear amplifiers with high dynamic input range

• FM quadrature demodulator with automatic centre

frequency adjustment and Total Harmonic Distortion (THD) compensation

• Level detector for AM and FM with temperature compensated output voltage; starting point and slope of level output is programmable via the I2C-bus

• AM RF PIN diode drive circuit; AGC threshold detection at AM mixer 1 and IF2 AGC input; threshold is programmable via the I2C-bus; AM IF2 AGC and demodulator

• AM AF output switchable to provide AM IF2 for AM stereo decoder

• AM noise blanker with blanking at AM IF2

• Several test modes available for fast IC and system

tests.

2 GENERAL DESCRIPTION

The TEA6845 is a single IC with car radio tuner for AM and FM intended for microcontroller tuning with the I2C-bus. It provides the following functions:

• AM double conversion receiver for LW, MW and SW (31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and IF2 = 450 kHz

• FM single conversion receiver with integrated image rejection for IF = 10.7 MHz capable of selecting US FM, US weather, Europe FM, East Europe FM and Japan FM bands.

3 ORDERING INFORMATION

TYPE

NUMBER

TEA6845AH QFP64 plastic quad ﬂat package; 64 leads (lead length 1.95 mm);

TEA6845H QFP64 plastic quad ﬂat package; 64 leads (lead length 1.95 mm);

2001 Apr 12 3

NAME DESCRIPTION VERSION

body 14 × 20 × 2.8 mm

PACKAGE

SOT319-5

SOT319-2

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

4 QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

DDA(n)

DDA(tot)

DDA2

DDD

AM(ant)

FM(ant)

FM(WB)(ant)

amb

AM overall system parameters (1 × SFE10.7MS3; 1 × SFR450H)

(S+N)/N signal plus noise-to-noise ratio m = 0.3 − 58 − dB THD total harmonic distortion m = 0.8 − 0.3 − %

FM overall system parameters (3 × SFE10.7MS3)

(S+N)/N signal plus noise-to-noise ratio ∆f = 22.5 kHz;

THD total harmonic distortion ∆f=75kHz − 0.6 1 %

analog supply voltage 1, 3, 4, 5

8 8.5 9 V

and 6 total analog supply current 1, 3, 4,

5 and 6

FM mode 45 56 67 mA

AM mode 39 49 59 mA analog supply voltage 2 4.75 5 5.25 V analog supply current 2 FM mode 6.5 8.1 9.8 mA

AM mode 4.7 5.9 7.1 mA digital supply voltage 4.75 5 5.25 V digital supply current FM mode 18 23 28 mA

AM mode 18 23 28 mA AM input frequency LW 0.144 − 0.288 MHz

MW 0.522 − 1.710 MHz

SW 5.85 − 9.99 MHz FM input frequency 65 − 108 MHz FM weather band input frequency 162.4 − 162.55 MHz ambient temperature −40 − +85 °C

m = 0.9 − 0.5 − %

− 65 − dB

de-emphasis = 50 µs

2001 Apr 12 4

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2001 Apr 12 5

5 BLOCK DIAGRAM

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

DAATD

DAAOUT

T1FMAGC T2FMAGC

IFMAGC

FMMIXIN2

RFGND

FMMIXIN1

ref(FMMIX)

IAMAGC T2AMAGC T1AMAGC

VCO

BLANK PULSE

DDA3

43 49484746 504544

SEQUENTIAL CIRCUIT FOR

RDS UPDATING

I2C-bus

MIXER2

IF AGC

LEVEL

AMAFIF2AFHOLD

DETECTOR

FM IF AM IF2

LEVEL

DAA

LIMITER/

LEVEL

FMMPXRDSMPXTRDSMUTEAFSAMPLEOSCTNKVCOGND

MUTE

COUNT

DDA2

2 ms/20 ms

DEMODULATOR

CRYSTAL

OSCILLATOR

POWER SUPPLY

I2C-BUS

DDA1

52 53

59 60 61

SDA SCL

IF2GND

QDET1

QDET2

AFC

level

XTAL1 XTALGND XTAL2

ref

DDD

10.25 MHz

DGND

TEA6845AH

TEA6845H

PEAK/

AVERAGE

CPOUTDAAIN

TUNING SYSTEM

DDA4

36 3938373534

÷2

90°

AM-NOISE

DETECTOR

÷5/10

ref

tune

ANTENNA

30 29 28

27 26 25

23 22 21

AGC

RF AGC

DAA

I/Q MIXER

90°

OSCFDB

40 41

AMMIX1IN1

MIXER 1

19 18

AMMIX1IN2

17 16

MIX1OUT2 IFAMP1DEC IFAMP1IN IFAMP1OUT IF1GND FMLIMIN

DDA5

MIX1OUT1

15 14 13

DDA6

IFAMP1

12 11 10 798 6 2345

IFAMP2DEC IFAMP2IN AMIF2IN AMIF2DEC

Fig.1 Block diagram.

handbook, full pagewidth

offset

IFAMP2

AMNBHOLD

IFAMP2OUT

FMLIMDEC

AGC

MGU350

AMMIX2OUT1

AMMIX2OUT2

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

6 PINNING

SYMBOL PIN DESCRIPTION

AGC

FMLIMDEC 2 FM limiter decoupling FMLIMIN 3 FM limiter input (10.7 MHz) AMIF2DEC 4 decoupling for AM IF2 input IFAMP2OUT 5 IF ampliﬁer 2 output (10.7 MHz) AMNBHOLD 6 AM noise blanker hold output AMIF2IN 7 AM IF2 input (450 kHz) for demodulator AGC and AM level detector IF1GND 8 AM IF1 ground IFAMP2IN 9 IF ampliﬁer 2 input (10.7 MHz) C

offset

IFAMP2DEC 11 IF ampliﬁer 2 decoupling and AGC capacitor for AM noise blanker IFAMP1OUT 12 IF ampliﬁer 1 output (10.7 MHz) IFAMP1IN 13 IF ampliﬁer 1 and AM mixer 2 input (10.7 MHz) V

DDA6

IFAMP1DEC 15 AM mixer 2 and FM IF ampliﬁer 1 decoupling MIX1OUT1 16 FM mixer and AM mixer 1 IF output high (10.7 MHz) MIX1OUT2 17 FM mixer and AM mixer 1 IF output low (10.7 MHz) V

DDA5

AMMIX1IN2 19 AM mixer 1 input 2 AMMIX1IN1 20 AM mixer 1 input 1 T1AMAGC 21 1st time constant output of AM front-end AGC T2AMAGC 22 2nd time constant of AM front-end AGC IAMAGC 23 PIN diode drive current output of AM front-end AGC V

ref(FMMIX)

FMMIXIN1 25 input 1 of FM RF mixer RFGND 26 RF ground FMMIXIN2 27 input 2 of FM RF mixer IFMAGC 28 PIN diode drive current output of FM front-end AGC T2FMAGC 29 2nd time constant of FM front-end AGC T1FMAGC 30 1st time constant of FM front-end AGC DAAOUT 31 output of digital alignment circuit for antenna tank circuit DAATD 32 temperature compensation diode of digital auto alignment circuit for antenna tank circuit DAAIN 33 input of digital auto alignment circuit for antenna tank circuit V

tune

CPOUT 35 charge pump output V

DDA4

ref

DDD

DGND 39 digital ground VCOGND 40 VCO ground

1 AMIFAGC capacitor

10 DC feedback for offset compensation RDS mute

14 analog supply voltage 6 (8.5 V) for IF ampliﬁer 1 and 2

18 analog supply voltage 5 (8.5 V) for FM mixer and AM mixer 1

24 reference voltage for FM mixer

34 tuning voltage

36 analog supply voltage 4 (8.5 V) for tuning PLL 37 reference frequency output for signal processor IC 38 digital supply voltage (5 V)

2001 Apr 12 6

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

SYMBOL PIN DESCRIPTION

OSCFDB 41 VCO feedback OSCTNK 42 VCO tank circuit V

DDA3

AFSAMPLE 44 AF sample ﬂag output for car audio signal processor IC AFHOLD 45 AF hold ﬂag output for car audio signal processor IC TRDSMUTE 46 time constant for RDS update mute AMAFIF2 47 AM demodulator AF output or IF2 output for AM stereo (multiplexed by I2C-bus) RDSMPX 48 MPX output for RDS decoder and signal processor (not muted) FMMPX 49 FM demodulator MPX output V

DDA2

DDA1

SDA 52 I2C-bus data line input and output SCL 53 I2C-bus clock line input IF2GND 54 AM IF2 ground QDET1 55 quadrature demodulator tank 1 QDET2 56 quadrature demodulator tank 2 C

AFC

level

XTAL1 59 crystal oscillator 1 XTALGND 60 crystal oscillator ground XTAL2 61 crystal oscillator 2 I

ref

AMMIX2OUT1 63 AM mixer 2 output 1 (450 kHz) AMMIX2OUT2 64 AM mixer 2 output 2 (450 kHz)

43 analog supply voltage 3 (8.5 V) for VCO

50 analog supply voltage 2 (5 V) for on-chip power supply 51 analog supply voltage 1 (8.5 V) for on-chip power supply

57 FM demodulator AFC capacitor 58 level voltage output for AM and FM

62 reference current for power supply

2001 Apr 12 7

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

handbook, full pagewidth

AFC

XTAL1 59

level

QDET2

QDET1

IF2GND

SCL 53

SDA 52

51 50

DDA1

DDA2

FMMPX

AGC

FMLIMDEC

FMLIMIN

1 2 3

ref

AMMIX2OUT1

AMMIX2OUT2 64

XTAL2 61

XTALGND 60

AMIF2DEC IFAMP2OUT AMNBHOLD

AMIF2IN

IF1GND

IFAMP2IN

offset

IFAMP2DEC IFAMP1OUT

IFAMP1IN

DDA6

IFAMP1DEC

MIX1OUT1

MIX1OUT2

DDA5

AMMIX1IN2

RDSMPX

AMAFIF2

TRDSMUTE

AFHOLD

AFSAMPLE

OSCTNK

OSCFDB

VCOGND

DGND

ref

CPOUT

DAAIN

MHB877

DDA3

DDD

DDA4

tune

4 5 6 7 8 9

TEA6845AH

TEA6845H

10 11 12 13 14 15 16 17 18 19

T1AMAGC

AMMIX1IN1

IAMAGC

T2AMAGC

FMMIXIN1

ref(FMMIX)

Fig.2 Pin configuration.

2001 Apr 12 8

RFGND

FMMIXIN2

IFMAGC

T2FMAGC

DAAOUT

T1FMAGC

DAATD

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

7 FUNCTIONAL DESCRIPTION

7.1 Oscillators

7.1.1 VCO TheL and CtunedVCO provides the local oscillator signal

for both FM and AM mixer 1. It has a frequency range of

151.2 to 248.2 MHz.

7.1.2 CRYSTAL OSCILLATOR The crystal oscillator provides a 20.5 MHz signal that is

used for:

• Reference frequency for frequency synthesizer PLL

• Local oscillator for AM mixer 2

• Reference frequency for the IF counter

• Timing signal for the RDS update algorithm

• Reference frequency (75.4 kHz) for the TEA6880H (car

audio signal processor - CASP) or TEF6890H (car radio integrated signal processor).

7.1.3 PLL Fast synthesizer PLL tuning system with local control for

inaudible RDS updating.

7.2 FM signal channel

7.2.1 DAA FM RF Digital Auto Alignment (DAA) circuitry for the

conversion of the VCO tuning voltage to a controlled alignment voltage for the FM antenna tank circuit.

7.2.2 FM I/Q MIXER FM quadrature mixer converts FM RF (65 to 162.55 MHz)

to IF of 10.7 MHz. The FM mixer provides inherent image rejection and high RF sensitivity.

It is capable of tuning the US FM, US weather, Europe FM, Japan FM and East Europe FM bands:

• US FM = 87.9 to 107.9 MHz

• US weather FM = 162.4 to 162.55 MHz

• Europe FM = 87.5 to 108 MHz

• Japan FM = 76.0 to 91 MHz

• East Europe FM = 65.8 to 74 MHz.

It includes an AGC PIN diode drive circuit for the FM RF AGC.The PIN diode drive can be activated via theI2C-bus as a local or distance function.

The AGC threshold is programmable and the keyed AGC function is switchable via the I2C-bus.

7.2.4 FM IF AMPLIFIERS The two FM IF amplifiers provide 10 dB and 4 dB

amplification with high linearity and dynamic range.

7.2.5 FM DEMODULATOR The FM quadrature demodulator includes automatic

centre frequency adjustment and THD compensation.

7.3 AM signal channel

7.3.1 AM TUNER INCLUDING MIXER 1 AND MIXER 2 The AM tuner is realized in a double conversion technique

and is capable of selecting LW, MW and SW bands. AM mixer 1 converts AM RF to IF1 of 10.7 MHz, while

AM mixer 2 converts IF1 of 10.7 MHz to IF2 of 450 kHz:

• LW = 144 to 288 kHz

• MW = 530 to 1710 kHz (US AM band)

• SW = 5.85 to 9.99 MHz (including the 31 m, 41 m and

49 m bands).

7.3.2 AM RF AGC AND IF2 AGC The AM RF includes a PIN diode drive circuit. The

threshold detection points for AM AGC are performed at AM mixer 1 and AM IF2. AGC thresholds are programmable via the I2C-bus.

7.3.3 AM DETECTOR The AM detector provides AM level information and

AM AF or AM IF2.

7.3.4 AM AF OR IF2 SWITCH The AM output provides either a detected AM AF or the

corresponding AM IF2 signal. The IF2 signal can be used for AM stereo decoder processing.

7.2.3 FM KEYED AGC FM contains keyed wide-band RF AGC. AGC detection

occursattheFM mixer. The wide-bandRF signalswitches a narrow band signal (IF) from the FM IF level detector circuitry that controls the FM RF AGC block.

2001 Apr 12 9

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

7.3.5 AM NOISE DETECTOR AND BLANKER The detection point for the AM noise blanker is the output

stage of AM mixer 1, while blanking is realized at the output of the mixer 2.

Triggersensitivitycanbemodifiedbychanging the resistor value at pin AMNBHOLD.

If the test mode is enabled by pin f

• The settling time of the AM IF2 AGC is reduced to less than 100 ms in the nominal application

• The digital-to-analog converters for the antenna DAA and the level DAA can be clocked directly by the SCL line of the I2C-bus

• The output at pin f

7.3.6 FM AND AM LEVEL DETECTOR FM and AM level detectors provide the temperature

compensated output voltage. The starting points and slopes of the level detector outputs are programmable via the I2C-bus.

TEA6880H or TEF6890H reference frequency, PLL reference frequency or PLL programmable divider output frequency

• The RDS update control circuit can be clocked directly via pin DAATD

• Pin T1AMAGC can be used to enable the load PLL

7.4 Test mode

The test mode of the IC is activated by:

circuit of the RDS update control circuit

• Charge pumps can be set into 3-state mode.

• Sending the test byte (byte 5) to the IC

• Connecting pin f

• Applying 50 µA to pin f

through a 100 kΩ resistor to V

ref

ref.

DDA1

8 LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

ref

can be selected by the I2C-bus:

ref

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

DDA1

DDA2

DDA3

DDA4

DDA5

DDA6

DDD

∆V

DD8.5-DD5

analog supply voltage 1 for on-chip power supply −0.3 +10 V analog supply voltage 2 for on-chip power supply −0.3 +6.5 V analog supply voltage 3 for VCO −0.3 +10 V analog supply voltage 4 for tuning PLL −0.3 +10 V analog supply voltage 5 for FM and AM RF −0.3 +10 V analog supply voltage 6 for IF ampliﬁer 1 and 2 −0.3 +10 V digital supply voltage −0.3 +6.5 V difference between any 8.5 V supply voltage and any

note 1 −0.3 − V

5 V supply voltage

stg

amb

storage temperature −55 +150 °C ambient temperature −40 +85 °C electrostatic handling voltage note 2 −200 +200 V

note 3 −2000 +2000 V

Notes

1. To avoid damages and wrong operation it is necessary to keep all 8.5 V supply voltages at a higher level than any 5 V supply voltage. This is also necessary during power-on and power-down sequences. Precautions have to be provided in such a way that interferences can not pull down the 8.5 V supply below the 5 V supply.

2. Machine model (R = 0 Ω, C = 200 pF).

3. Human body model (R = 1.5 kΩ, C = 100 pF).

2001 Apr 12 10

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

9 THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

th(j-a)

10 DC CHARACTERISTICS

DDA1=VDDA3=VDDA4=VDDA5=VDDA6

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply voltage

DDA(n)

DDA2

DDD

Supply current in FM mode

DDD

DDA1

DDA2

DDA3

DDA4

DDA5

DDA6

MIX1OUT1

MIX1OUT2

Supply current in AM mode

DDD

DDA1

DDA2

DDA3

DDA4

DDA5

MIX1OUT1

MIX1OUT2

AMMIX2OUT1

AMMIX2OUT2

thermal resistance from junction to ambient in free air

TEA6845AH 46 K/W TEA6845H 48 K/W

= 8.5 V; V

DDA2

=5V; V

DDD

=5V; T

=25°C; unless otherwise speciﬁed.

amb

analog supply voltage 1, 3, 4, 5 and 6 8 8.5 9 V analog supply voltage 2 4.75 5 5.25 V digital supply voltage 4.75 5 5.25 V

digital supply current 18 23 28 mA analog supply current 1 for on-chip power

− 15 − mA

supply analog supply current 2 for on-chip power

6.5 8.1 9.8 mA

supply analog supply current 3 for VCO − 6.5 − mA analog supply current 4 for tuning PLL test mode;

− 2.9 − mA

bit TMS3 = 1 analog supply current 5 for FM RF − 5 − mA analog supply current 6 for FM IF

10 12 14 mA

ampliﬁer 1 and 2 bias current of FM mixer output 1 4.8 6 7.2 mA bias current of FM mixer output 2 4.8 6 7.2 mA

digital supply current 18 23 28 mA analog supply current 1 for on-chip power

− 17.5 − mA

supply analog supply current 2 for on-chip power

4.7 5.9 7.1 mA

supply analog supply current 3 for VCO − 6.5 − mA analog supply current 4 for tuning PLL test mode;

− 1.6 − mA

bit TMS3 = 1 analog supply current 5 for RF − 1.8 − mA bias current of AM mixer 1 output 1 4.8 6 7.2 mA bias current of AM mixer 1 output 2 4.8 6 7.2 mA bias current of AM mixer 2 output 1 3.6 4.5 5.4 mA bias current of AM mixer 2 output 2 3.6 4.5 5.4 mA

2001 Apr 12 11

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

On-chip power supply reference current generator: pin I

o(ref)

o(max)

output reference voltage 4 4.25 4.5 V output resistance 8 11 13 kΩ maximum output current −100 − +100 nA

ref

11 AC CHARACTERISTICS

DDA1=VDDA3=VDDA4=VDDA5=VDDA6

= 8.5 V; V

DDA2

=5V; V

DDD

=5V; T

=25°C; see Figs 9 and 10; unless

amb

otherwise speciﬁed.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Voltage controlled oscillator

osc

C/N carrier-to-noise ratio f

RR ripple rejection f

oscillator frequency 151.2 − 248.2 MHz

= 200 MHz; ∆f = 10 kHz − 101 −

osc

= 100 Hz;

ripple

DDA3(ripple)

osc

= 100 mV (RMS) = 250 MHz − 97 − dB = 200 MHz − 99 − dB

FEEDBACK INPUT: PIN OSCFDB V

i(bias)

input bias voltage 2.2 2.8 3.4 V TANK CIRCUIT OUTPUT: PIN OSCTNK V

o(rms)

DC output voltage 5 6.1 7.2 V

AC output voltage

= 200 MHz − 1.5 − V

osc

(RMS value)

Crystal oscillator

f R

xtal

crystal frequency 20.4996 20.5 20.5004 MHz

crystal motional

start of operating −−500 Ω

resistance C

xtal

C/N carrier-to-noise ratio f

crystal shunt capacitance −−18 pF

= 20.5 MHz (10.25 MHz);

xtal

− 112 −

∆f=10kHz

dBc

----------- Hz

dBc

----------- Hz

IRCUIT INPUTS: PINS XTAL1, XTAL2 AND XTALGND

C V

xtal(rms)

crystal voltage

note 2 − 350 − mV

(RMS value)

XTAL1

XTAL2

DC bias voltage 1.7 2.1 2.5 V

real part of input impedance

XTAL1

note 1

− V

XTAL2

input capacitance note 1 8 10 12 pF

2001 Apr 12 12

= 1 mV;

−500 −− Ω

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

XTALGND

Oscillator divider N1

N1 oscillator divider ratio FM mode:

Oscillator divider N2

N2 oscillator divider ratio AM mode

Synthesizer

crystal oscillator circuit current

start-up at V

XTAL1=VXTAL2

operating at V

− V

XTAL1

XTAL2

= 2.1 V

= ±400 mV

− 9 − mA

− 1.5 − mA

standard, Europe and local − 2 − weather band (WX) − 1 −

SW − 10 − LW and MW − 5 −

PROGRAMMABLE DIVIDER N

prog

programmable divider ratio

∆N

step

programmabledivider step

size REFERENCE FREQUENCY DIVIDER N

ref

crystal oscillator divider

ratio

CHARGE PUMP: PIN CPOUT I

sink(cp1)l

low charge pump 1 peak

sink current I

source(cp1)l

low charge pump 1 peak

source current I

sink(cp1)h

high charge pump 1 peak

sink current

source(cp1)h

high charge pump 1 peak

source current

sink(cp2)

charge pump 2 peak sink

current I

source(cp2)

charge pump 2 peak

source current I

Z(cp1)

, I

charge pump 1 or 2

Z(cp2)

current in 3-state

512 − 32767

− 1 −

= 20.5 MHz

xtal

= 100 kHz − 205 −

ref

= 50 kHz − 410 −

ref

= 25 kHz − 820 −

ref

= 20 kHz − 1025 −

ref

= 10 kHz − 2050 −

ref

FM weather band mode;

0.4V<V

CPOUT

< 7.6 V

FM weather band mode;

0.4V<V

CPOUT

< 7.6 V

AM stereo mode; N2 = 10

200 300 400 µA

−400 −300 −200 µA

0.7 1 1.3 mA

(LWand MW);

0.4V<V AM stereo mode; N2 = 10

CPOUT

< 7.6 V

−1.3 −1 −0.7 mA

(LWand MW);

0.4V<V FM standard mode;

0.3V<V FM standard mode;

0.3V<V 0<V

CPOUT

< 7.6 V

CPOUT

100 130 160 µA

< 7.1 V

CPOUT

−160 −130 −100 µA

< 7.1 V

CPOUT

< 8.5 V −5 − +5 nA

2001 Apr 12 13

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

CHARGE PUMP: PIN V I

sink(cp3)

tune

charge pump 3 peak sink

current I

source(cp3)

charge pump 3 peak

source current I

Z(cp3)

charge pump 3 current in

3-state

Antenna Digital Auto Alignment (DAA)

DAA INPUT: PIN DAAIN I

bias(cp)

charge pump buffer input

bias current

i(cp)

charge pump buffer input

voltage DAA OUTPUT: PIN DAAOUT; note 2 V

o(AM)

DAA output voltage in

AM mode V

o(FM)

DAA output voltage in

FM mode

∆V

o(n)

o (T)

DAA output noise voltage FM mode; V

DAA output voltage

variation with temperature

∆V

o (step)

o(sink)

o(source)

DAA step accuracy FM mode; V

DAA output sink current 0.2V<V

DAA output source current −−−50 µA

FM standard mode;

0.4V<V

tune

< 7.6 V

FM standard mode;

0.4V<V 0<V

tune

< 7.6 V

tune

< 8.5 V −5 − +5 nA

FM mode;

0.4V<V

DAAIN

< 8.0 V

AM mode; 0V<V

DAAIN

< 8.5 V

2.1 3 3.9 mA

−3.9 −3 −2.1 mA

−10 − +10 nA

0 − 8.5 V

−−0.3 V

= 4.0 V;

DAAIN

DAATD

= 0.7 V minimum value −−0.5 V bits DAA[6:0] set to logic 0 1.5 1.65 1.8 V value: data

3.8 4 4.2 V

byte 3 = 10101011 maximum value;

8 − 8.5 V

bits DAA[6:0] set to logic 1

DAAIN

DAATD

= 3.0 V;

= 0.7 V; bits DAA[6:0]

6.2 6.5 6.8 V

set to logic 1 V

=2V

DAAIN

data byte 3 = 11010101 3 3.3 3.6 V data byte 3 = 10101010 1.8 2 2.2 V

DAAIN

=4V;

− 30 100 µV data byte 3: bit 6 = 1, bits 5 to 0 = 0; B = 300 Hz to 15 kHz

= −40 to +85 °C;

amb

−8 − +8 mV data byte 3 = 10101011; V

DAATD

= 0.7 V

DAAOUT

< 8.0 V;

0.5V

LSB

1.5V

LSB

n = 0 to 127

DAAOUT

< 8.25 V 50 −− µA

2001 Apr 12 14

Philips Semiconductors Product speciﬁcation

New In Car Entertainment (NICE) car radio TEA6845AH; TEA6845H

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

RR ripple rejection f C

DAA TEMPERATURE COMPENSATION: PIN DAA TD I

source

IF counter (FM IF or AM IF2 counter)

count(IF)

precount

Reference frequency for car sound processor IC; note 3

DAA output settling time 0.2V<V

DAAOUT

< 8.25 V;

−−30 µs CL= 270 pF

DAA output load

ripple

DAAOUT

= 100 Hz; V

< 8.0 V; FM mode −−270 pF

=1mV − 50 − dB

DDA4

capacitance

compensation diode

0.2V<V

< 1.5 V −50 −40 −30 µA

DAATD

source current temperature coefﬁcient of

compensation diode

0.2V<V T

= −40 to +85 °C

amb

DAATD

< 1.5 V;

−3 × 10

−10

− +3 × 10

−10K−1

source current

IF counter length for

− 8 − bit

AM and FM IF counter period data byte 4: bit 7 = 1 − 2 − ms

data byte 4: bit 7 = 0 − 20 − ms

FM IF counter prescaler ratio

data byte 4: bit 3 = 1 − 10 − data byte 4: bit 3 = 0 − 100 −

REFERENCE FREQUENCY DIVIDER N

ref

crystal oscillator divider ratio

ref

VOLTAGE GENERATOR; PIN f V

o(p-p)

reference frequency f

ref

AC output voltage

= 20.5 MHz − 75.368 − kHz

xtal

(peak-to-peak value) V R R

o L(min)

DC output voltage 3.2 3.4 3.9 V

output resistance −−50 kΩ

minimum load resistance 1 −− MΩ

AM signal channel

AM RF AGC STAGE INPUTS: PINS AMMIX1IN1 AND AMMIX1IN2 V

i(p)

RF input voltage for AGC

start level (peak value)

data byte 5: bit 5 = 0, bit 6 = 0 − 150 − mV data byte 5: bit 5 = 1, bit 6 = 0 − 275 − mV data byte 5: bit 5 = 0, bit 6 = 1 − 400 − mV

data byte 5: bit 5 = 1, bit 6 = 1 − 525 − mV AM IF AGC STAGE INPUTS: PINS AMIF2IN AND AMIF2DEC V

i(p)

IF2 input voltage (peak

AGC start level 0.20 0.27 0.35 V

value) AM RF AGC CURRENT GENERATOR OUTPUT: PIN IAMAGC I

sink(max)

maximum AGC sink

current

AMMIX1IN1

(peak value)

> 500 mV

− 272 −

60 100 170 mV

− 15 − mA

2001 Apr 12 15

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