2001 Apr 12

10

Philips Semiconductors

Product specification

New In Car Entertainment (NICE) car radio

TEA6846H

7.3.5

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.

Trigger sensitivity can be modified by changing the resistor

value at pin AMNBHOLD.

7.3.6

FM and AM level detectors provide the temperature

compensated output voltage. The starting points and

slopes of the level detector outputs are programmable via

7.4

Test mode

The test mode of the IC is activated by:

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

• 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

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

circuit of the RDS update control circuit

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

8

LIMITING VALUES

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

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 k

Ω, C = 100 pF).

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

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

5 V supply voltage

note 1

−0.3

−

V

storage temperature

−55

+150

°C

ambient temperature

−40

+85

°C

electrostatic handling voltage

note 2

−200

+200

V

note 3

−2000

+2000

V