U3741BM データシートの表示（PDF） - Temic Semiconductors

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U3741BM

UHF ASK/FSK Receiver

Temic Semiconductors 

U3741BM

Ordering Information

Extended Type Number

U3741BM-M2FL

U3741BM-M2FLG3

U3741BM-M3FL

U3741BM-M3FLG3

Package

SO20

SO20

SO20

SO20

Remarks

2: IF bandwidth of 300 kHz, tube

2: IF bandwidth of 300 kHz, taped and reeled

3: IF bandwidth of 600 kHz, tube

3: IF bandwidth of 600 kHz, taped and reeled

Pin Description

SENS 1

20 DATA

FSK/ASK 2

19 ENABLE

CDEM 3

AVCC 4

18 TEST

17 POUT

AGND 5

16 MODE

DGND 6

15 DVCC

MIXVCC 7

14 XTO

LNAGND 8

13 LFGND

LNA_IN 9

12 LF

n.c. 10

11 LFVCC

14844

Figure 2. Pinning SO20

Pin Symbol

Function

1 SENS Sensitivity-control resistor

2 FSK/ASK Selecting FSK/ASK

Low: FSK, High: ASK

3 CDEM Lower cut-off frequency data filter

4 AVCC Analog power supply

5 AGND Analog ground

6 DGND Digital ground

7 MIXVCC Power supply mixer

8 LNAGND High-frequency ground LNA and

mixer

9 LNA_IN RF input

10

n.c. Not connected

11 LFVCC Power supply VCO

12

LF Loop filter

13 LFGND Ground VCO

14 XTO Crystal oscillator

15 DVCC Digital power supply

16 MODE Selecting 433.92 MHz /315 MHz

Low: 4.90625 MHz (USA)

High: 6.76438 (Europe)

17 POUT Programmable output port

18 TEST Test pin, during operation at GND

19 ENABLE Enables the polling mode

Low: polling mode off

(sleep mode)

H: polling mode on

(active mode)

20 DATA Data output / configuration input

2 (25)

Rev. A1, 15-Oct-98

Preliminary Information

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