TEA5757HL Ver la hoja de datos (PDF) - Philips Electronics

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Fabricante

TEA5757HL

Self Tuned Radio (STR)

Philips Electronics 

Philips Semiconductors

Self Tuned Radio (STR)

Product specification

TEA5757HL; TEA5759HL

To ensure that the search function operates correctly under all conditions the following search sequence must be applied:

• Store the current frequency in the memory

• Issue the search command

• Wait for data valid and read the new frequency

• If the new frequency is the same as the stored frequency, issue a preset step (e.g. 50 kHz) and start the search

sequence again.

TUNING CURRENTS FOR DIFFERENT CONDITIONS

handbook, full pagI9ewidth

IB

IA

−IA

−IB

R

W2

W1

fc

R

R

f

R

MHB641

Fig.3 Tuning currents.

Table 1 Tuning currents

BAND

SELECT

FM

MW

LW

SW

W1

(kHz)

25

3

1

1

W2

(kHz)

200

64

64

64

R

(kHz)

12.5

1

1

1

MIN.

2

2

2

0.4

IA (µA)

TYP.

2.5

2.5

2.5

0.5

MAX.

3

3

3

0.7

MIN.

54

54

54

12

IB (µA)

TYP.

80

80

80

16

MAX.

100

100

100

20

2000 Feb 02

8

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