U3500BM Просмотр технического описания (PDF) - Temic Semiconductors

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U3500BM

Cordless Telephone Signal Processor

Temic Semiconductors 

U3500BM

Pin Description

TXO 1

28 TXDAT

CTC 2

27 RXDAT

COIN 3

MICO 4

26 D

25 C

MIC2 5

24 DACO

MIC1 6

23 VCC

GND 7

22 LOIN

RXO 8

21 VBATT

RECO2 9

20 LNAO

RECO1 10

19 RGND

EXIN 11

18 LNAIN

ETC 12

17 MIXGND

IFIN2 13

16 MIXIN

IFIN1 14

15 MIXO

96 11791

Figure 2. Pinning

Order Information

Extended Type Number

U3500BM-BFL

U3500BM-BFLG3

Package

SO28

SO28

Pin Symbol

Function

1 TXO Transmit section analog output

2 CTC Compressor time constant

control analog output

3 COIN Compressor analog input

4 MICO Microphone amplifier output

5 MIC2 Non-inverting input of

microphone amplifier

6 MIC1 Inverting input of microphone

amplifier

7 GND LF analog/ digital ground

8 RXO Intermediate receive analog

output

9 RECO2 Symmetrical output of receive

amplifier

10 RECO1 Symmetrical output of receive

amplifier

11 EMN Expander analog input

12 ETC Expander time constant control

analog output

13 IFIN2 Symmetrical IF amplifier input

14 IFIN1 Symmetrical IF amplifier input

15 MIXO Mixer output

16 MIXIN Mixer input

17 MIXGND IF amplifier and mixer ground

18 LNAIN Low-noise amplifier input

19 RGND Low-noise amplifier ground

20 LNAO Low-noise amplifier output/

External LO input

21 VBATT Battery supply

22 LOIN Local oscillator input

(11.15 MHz)

23 VCC Supply-voltage output for

peripherals and internal supply

of digital part

24 DACO D/A comparator output

25

C Clock input of serial bus

26

D Data input of serial bus

27 RXDAT Receive data digital output

28 TXDAT Transmit data input

Remarks

Taped and reeled

2 (17)

Rev. A3, 20-May-98

Preliminary Information

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