U3741BM Datasheet, PDF (3/32 Pages) ATMEL Corporation – UHF ASK RECEIVER IC

Pin Configuration
Figure 1. Pinning SO20
SENS 1
FSK/ASK 2
CDEM 3
AVCC 4
AGND 5
DGND 6
MIXVCC 7
LNAGND 8
LNA_IN 9
NC 10
20 DATA
19 ENABLE
18 TEST
17 POUT
16 MODE
15 DVCC
14 XTO
13 LFGND
12 LF
11 LFVCC
U3741BM
Pin Description
Pin
Symbol
1
SENS
2
FSK/ASK
3
CDEM
4
AVCC
5
AGND
6
DGND
7
MIXVCC
8
LNAGND
9
LNA_IN
10
NC
11
LFVCC
12
LF
13
LFGND
14
XTO
15
DVCC
16
MODE
17
POUT
18
TEST
19
ENABLE
20
DATA
Function
Sensitivity-control resistor
Selecting FSK/ASK. Low: FSK, High: ASK
Lower cut-off frequency data filter
Analog power supply
Analog ground
Digital ground
Power supply mixer
High-frequency ground LNA and mixer
RF input
Not connected
Power supply VCO
Loop filter
Ground VCO
Crystal oscillator
Digital power supply
Selecting 433.92 MHz/315 MHz. Low: 4.90625 MHz (USA). High: 6.76438 (Europe)
Programmable output port
Test pin, during operation at GND
Enables the polling mode
Low: polling mode off (sleep mode)
H: polling mode on (active mode)
Data output/configuration input
3
4662B–RKE–10/04