Document
M64886FP
RF Transceiver for Short-range Wireless
REJ03F0087-0100Z Rev.1.0 Sep.22.2003
Description
The M64886FP is a semiconductor integrated circuit designed for RF / IF / AF transceiver function with Dual PLL synthesizer for double conversion system cordless phone which used by 2.4 GHz and 900MHz ISM band of North America. It contains dual PLL and VCO circuit for RX / TX, PA for transmission output, double balance type mixer for the 1st and 2nd intermediate frequency, LIM and RSSI and Demodulator for 5.5 MHz, Expander (include volume www.DataSheet4U.com control function) / Compressor (include IDC, Splutter Filter block) and Speaker / Microphone Amp for Audio signal. It is possible to control level of TX power by external variable resistor. It is designed using a high-frequency BiCMOS process and contributes to reduce size of system and power consumption.
Features
• Receiver It is possible to construct double conversion system. Built in 1st MIX for 1st IF which can respond up to 2.4 GHz band. Built in 2nd MIX and LIMITTER and RSSI and Demodulator for 2nd IF. Built in Expander and Speaker Amp for Audio signal. • Transmission Built in PA (Pout = –1dBm max) which can respond up to 2.4 GHz band. It is possible to control level of power by external variable resistor. Out put is differential type, it is need to connect to RF filter with a balun circuit. Built in Microphone Amp and Compressor and IDC and Splutter Filter for Audio signal. • Synthesizer Built in Differential type VCO for TX and RX which can respond up to 1.2 GHz band. Built in 2-multiple circuit which can respond up to 2.4 GHz band. Built in 2-modulus prescaler which can respond up to 1.2 GHz band. Built in current output type charge pump. Built in B-E Colpitts type crystal oscillation for reference frequency. • Current consumption Stand by mode = PLL+VCO+ DBL+LO+MIX+IF = 28 mA Typ. TX / RX mode (ID) = Stand by + PLL+VCO+DBL+PA = 55 mA Typ. TX / RX mode (Talk) = TX / RX mode (ID) +AF+SP = 65 mA Typ. Off mode = < 50 µA
Rev.1.0, Sep.22.2003, page 1 of 27
M64886FP
Block Diagram
1. TX = 900M & RX = 2400M
5.5MHz
From µcon
From µcon
From µcon
LCR
2ndMIXOUT
X’t al
PLLGND1 PLLGND2 2ndMIX IN OSCVCC OSCGND MIXOUT PLLV CC PLLV DD LOOUT XOUT XI N
MI XVCC
IFGND
IFVCC
CPS
80 ISOGND1
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
LI MI N
62
LI MREF2
DATA
LE
61 60 LI MREF1 RSSI RSSIC OMP To µcon
1 2 3 4 5 Doubler 6 7
OSC RSSI ref
+ 2nd MI X 1st MI X
Reference counter
www.DataSheet4U.com
LC
MIXGND MI XIN MI XBIAS SWOUT RVGND2
59 58
ON/OFF
Demodulator ON/OFF
57 56
DISC
Discri
LI MOUT SLICEROUT To µcon SLICERIN
ON/OFF
ON/OFF +
From RF Filter MSL
RXLA2
Control register RX VCO 1200M Hz ref Expander
+
55 54
ref
53
DEMODOUT
RXLA1 8 RVGND1 RXLB1 RXLB2 RVVCC
LC
9 10 11 12
Pres caler
Programmable counter
ON/OFF
+
52
EXPIN EXPRECT VOLCAP
ref
51 50
MSL
3bit 1bit ref
+
Mute
+
49 48
EXPOUT SPIN SPOUT1
RXVT 13
PD
1bit
ON/OFF
CR
RXPD TXDVCC T.