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RX3930

型号：

RX3930

描述：

低功耗ISM频段FM / FSK接收器IC[ Low Power ISM-band FM/FSK Receiver IC ]

品牌：

ETC[ ETC ]

页数：

8 页

PDF大小：

129 K

下载PDF手册
RX3930 Low Power ISM-band FM/FSK Receiver IC  
A d v a n c e I n f o r m a t i o n  
the wireless IC company  
HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information con-  
tained in this datasheet is subject to change without prior notice. HiMARK Technology, Inc. assumes no responsibility  
for the use of any circuits shown in this datasheet.  
Description  
The RX3930 is a low power 433/868/915 MHz FM/FSK receiver IC which is suitable for  
use in the North American 915 MHz and the European 433 and 868 MHz ISM bands.  
Features  
! Integrated VCO with fixed ÷ 64 prescaler, phase/frequency detector, and reference  
oscillator forming complete phase-locked loop  
! User selectable FM or FSK output  
! RSSI output with 70 dB dynamic range  
! Receiver enable pin for power saving  
! TQFP-32 package (5mm x 5mm)  
Applications  
! Wireless mouse  
! Wireless amplifier/ speaker/ earphone/ microphone  
! Wireless car alarm system  
Block Diagram  
OSC OSC  
RXEN IN  
OUT DO VSS4 VCC2 RES RES  
32  
31  
30  
29  
28  
27  
26  
25  
VCC1  
RXIN  
VSS1  
OSC  
QUAD  
1
2
3
4
5
6
7
8
24  
23  
22  
21  
20  
19  
18  
17  
VCO  
IF2  
OUT  
PFD  
÷ 64  
FM  
OUT  
LNA  
LNA  
OUT  
BIAS  
COMPARATOR/  
AUDIO AMP  
RSSI  
VSS2  
MUTE  
MIXER  
MIX  
IN  
DEMOD  
LIMITER  
RSSI  
VCC3  
IFAMP  
IF2  
DEC  
VSS3  
IF2  
DEC  
MIX  
OUT  
9
10  
11  
12  
13  
14  
15  
16  
IFIN IFIN IF1  
IF1  
IF1 VREF VSS5 IF2  
DEC DEC OUT IF  
IN  
Page 1  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Package and Pin Assignment: TQFP-32  
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
25  
26  
27  
28  
29  
30  
31  
32  
16  
15  
14  
13  
12  
11  
10  
9
RES  
RES  
IF2IN  
VSS5  
VCC2  
VSS4  
VREFIF  
IF1OUT  
IF1DEC  
IF1DEC  
IFIN  
DO  
OSCOUT  
OSCIN  
RXEN  
IFIN  
1
2
3
4
5
6
7
8
Dimensions in mm  
Symbols  
Dimensions in inch  
nom.  
min.  
nom.  
max.  
1.20  
min.  
—
max.  
A
0.047  
—
—
—
A1  
0.05  
0.15  
0.002  
0.006  
—
1.00  
0.22  
—
A2  
b
0.95  
0.17  
0.09  
1.05  
0.27  
0.20  
0.037  
0.007  
0.003  
0.039  
0.009  
0.041  
0.011  
0.008  
C
—
—
D1  
D
4.90  
6.80  
4.90  
6.80  
5.00  
7.00  
5.00  
7.00  
5.10  
7.20  
5.10  
7.20  
0.193  
0.267  
0.193  
0.267  
0.197  
0.275  
0.197  
0.275  
0.201  
0.283  
0.201  
0.283  
E1  
E
e
L
0.50(typ)  
0.60  
0.02(typ)  
0.024  
—
0.45  
—
—
0.75  
—
—
0.018  
—
—
0.029  
—
0.039(ref.)  
L1  
1.00(ref.)  
θ1  
0°  
3.5°  
7°  
0°  
3.5°  
8°  
ccc  
0.008  
0.003  
—
—
—
—
Page 2  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Pin Descriptions  
Number  
Name  
VCC1  
I/O  
Description  
1
2
POWER  
Supply DC bias for RF amplifier  
RF amplifier input  
RXIN  
I
GND  
O
3
VSS1  
Ground for RF amplifier  
4
LNAOUT  
VSS2  
LNA output  
5
GND  
I
Ground for 40dB IF limiting amplifier  
RF input to RF Mixer  
6
MIXIN  
VSS3  
7
GND  
O
Ground for RF Mixer  
8
MIXOUT  
IFIN  
IF output from RF Mixer  
9
I
IF input (required 10nF DC blocking capacitor)  
Same as pin 9 except non-inverting node amplifier input  
10  
11  
12  
13  
14  
15  
IFIN  
I
IF1DEC  
IF1DEC  
IF1OUT  
VREFIF  
VSS5  
I/O  
I/O  
O
DC feedback for 40dB limiting amplifier (required 100nF bypass capacitor)  
See pin 11  
IF output from the 40 dB limiting amplifier  
O
DC voltage reference for the IF limiting amplifier (required 0.1 µF capacitor)  
Ground for 60dB IF limiting amplifier  
GND  
Inverting input to the 60dB limiting amplifier (required 10nF DC blocking  
capacitor)  
16  
17  
IF2 IN  
I
DC feedback node for the 60dB limiting amplifier (required 100nF bypass  
capacitor)  
IF2DEC  
I/O  
18  
19  
IF2DEC  
VCC3  
I/O  
See pin 17  
POWER  
Supply DC bias to the 60dB IF limiting amplifier  
Select FM, FSK, or mute at the FM OUT pin. (to Ground: FSK OUTPUT;  
floating: FM OUTPUT; to Vcc: muting)  
20  
MUTE  
I
21  
22  
23  
24  
25  
26  
27  
28  
29  
RSSI  
FMOUT  
IF2OUT  
QUAD  
RES  
O
O
Proportional DC voltage (0.5V~2.5V) output  
Demodulated output  
O
IF output from the 60dB limiting strip  
FM demodulator input (not AC coupled)  
Supply DC voltage to VCO  
I
I/O  
RES  
I/O  
See pin 25  
VCC2  
VSS4  
DO  
POWER  
GND  
I/O  
Supply DC bias to the VCO, prescaler, and PLL  
Ground shared by the VCO, prescaler, and PLL  
Output of the charge pump, and input to the VCO  
Page 3  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Number  
30  
Name  
OSCOUT  
OSCIN  
I/O  
I/O  
I/O  
Description  
Connected to the reference oscillator transistor base  
31  
Connected to the emitter of the reference oscillator transistor  
Power up or down the RX3930. (logic high powers up the receiver and PLL;  
logic low powers down circuit to stand by mode)  
32  
RXEN  
I
Page 4  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Absolute Maximum Ratings  
VSS = 0 V  
Parameter  
Symbol  
Rating  
Unit  
V
VCC1  
VCC2  
Supply voltage  
VSS – 0.5 to VSS + 5.5  
TOPR  
TSTG  
TSLD  
tSLD  
Operating temperature range  
Storage temperature range  
Soldering temperature range  
Soldering time range  
–40 to 85  
–40 to 150  
255  
°C  
°C  
°C  
s
10  
Recommended Operating Conditions  
VSS = 0 V  
Value  
Parameter  
Symbol  
Unit  
min.  
2.7  
typ.  
3.6  
3.6  
3.6  
max.  
5.0  
VCC1  
VCC2  
VCC3  
TA  
V
V
V
Supply voltage range  
Operating temperature  
2.7  
5.0  
2.7  
5.0  
–10  
25  
60  
°C  
Page 5  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Receiver Characteristics  
(VCC1, VCC2, VCC3 = 2.7 to 5.0 V, VSS = 0 V, RXEN = high, TA = –10 to 60 °C unless otherwise noted)  
Value  
Parameter  
Symbol  
Condition  
Unit  
min.  
300  
typ.  
max.  
1000  
Input RF frequency range  
MHz  
BWIF = 150 KHz,  
fRF = 915 MHz,  
SNR = 8 dB  
Psens  
Sensitivity  
LO leakage  
–97  
–55  
dBm  
dBm  
αLO  
Electrical Characteristics  
(VCC1, VCC2, VCC3 = 2.7 to 5.0 V, VSS = 0 V, RXEN = high, TA = –10 to 60 °C, fRF = 915 MHz unless other-  
wise noted)  
Value  
Parameter  
Symbol  
Condition  
Unit  
min.  
typ.  
max.  
Power supply  
VCC1 supply voltage  
VCC2 supply voltage  
VCC3 supply voltage  
Total dc current (normal operation)  
Total dc current (stand-by mode)  
LNA  
VCC1  
VCC2  
VCC3  
IDC  
2.7  
2.7  
2.7  
3.6  
3.6  
3.6  
10  
5.0  
5.0  
5.0  
V
V
V
mA  
µA  
Istandby  
RXEN = low  
1
Power gain  
GLNA  
Matched to 50 Ω  
17  
dB  
dB  
Noise figure  
NFLNA  
3.8  
Input third-order intermodulation intercept  
point  
IIP3LNA  
–8  
dBm  
Mixer  
GC  
Conversion power gain  
Noise figure (SSB)  
Matched to 50 Ω  
7
dB  
dB  
NFMIX  
17  
Input third-order intermodulation intercept  
point  
IIP3MIX  
–15.5  
dBm  
VCO  
Frequency range  
External varactor  
300  
1000  
MHz  
Page 6  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Value  
typ.  
Parameter  
Symbol  
Condition  
Unit  
min.  
–40  
max.  
PLL  
N-divider ratio  
64  
Reference frequency  
Charge pump current  
Lock time  
fREF  
ICP  
17  
40  
MHz  
µA  
PLL’s lock time set by  
bandwidth of external  
loop filter  
τlock  
10  
ms  
IF amplifier  
Frequency range  
Input impedance  
Output impedance  
Limiter  
0.1  
0.1  
10.7  
330  
330  
25  
25  
MHz  
Ω
Zin,IF  
Zout,IF  
Ω
Frequency range  
Input impedance  
Output impedance  
RSSI  
10.7  
330  
330  
MHz  
Ω
Zin,IF  
Zout,IF  
Ω
RSSI dynamic range  
RSSI dc output range  
FM/FSK Demodulator  
Demodulated output level (audio)  
FSK output duty ratio  
70  
dB  
V
Rload = 51 KΩ  
0.5  
40  
2.5  
60  
VOD  
mVrms  
%
70  
50  
Page 7  
May 2001  
A d v a n c e I n f o r m a t i o n  
RX3930  
the wireless IC company  
Application Circuit (906 MHz)  
*:Alpha  
smv1233-11  
47N  
3.3N  
10K  
*
10  
2.7K  
VCC  
Ctrim  
47P  
10N  
2.7P  
100P  
3.9N  
27  
14.31818MHz  
RXEN  
100P  
3.9N  
**:  
10.7MHz  
discriminator  
32  
31  
30  
29  
28  
26  
25  
CDF-107B  
15K  
**  
RXEN  
DO VSS4 VCC2 RES RES  
OSC OSC  
47P  
10N  
IN  
OUT  
VCC  
1
24  
VCC1  
QUAD  
10N  
2.2P  
12N  
IF2  
OUT  
RXIN  
VSS1  
2
3
4
5
6
7
8
23  
22  
21  
20  
19  
18  
17  
RXIN  
22P  
FM  
OUT  
FMOUT  
LNA  
OUT  
8.2N  
RSSI  
51K  
RSSI  
VCC  
47P  
100P  
10P  
MUTE  
10N  
VSS2  
MUTE  
MIX  
IN  
VCC3  
VCC  
10N  
IF2  
DEC  
47P  
10N  
VSS3  
MIX  
OUT  
IF2  
DEC  
10uA  
VCC  
IF1  
IF1  
IF1  
VREF  
DEC DEC OUT IF  
IF2  
IN  
IFIN IFIN  
VSS5  
15  
10N  
10N  
47P  
9
10  
11  
12  
13  
14  
16  
10N  
10N  
10N 10N  
10N  
LT 10.7MS3  
0 = 10.7MHz  
BW = 180KHz  
f
Page 8  
May 2001  
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