MITSUBISHI ICs (COMMUNICATION)
M64821FP
1 CHIP SYNTHESIZER & MODULATOR FOR PHS
DESCRIPTION
The M64821FP is a semicondu...
MITSUBISHI ICs (COMMUNICATION)
M64821FP
1 CHIP SYNTHESIZER & MODULATOR FOR PHS
DESCRIPTION
The M64821FP is a semiconductor consisting of PLL and Modulator. Using Bi-CMOS technology, it contains dual PLL (1.8GHz, 550MHz), a mixer for 2nd IF,
transistor for VCO , modulator and Up-convertor on chip.
PIN CONFIGURATION (TOP VIEW)
FEATURES
Built-in 2nd mixer and RSSI Vcc=2.7 to 3.6V Icc= TYP.41mA (TX.), TYP.23mA (RX.) Built-in high accuracy phase shifter (CR type) Large Output (-13dBm type) Attenuator for Gain Control Gain characteristics with temperature dependent Built-in
transistor and Buffer for 2nd Local VCO Built-in Buffer for 1.6GHz VCO Small Package (48pin QFP, lead pitch 0.5mm)
Outline
48P6D
APPLICATION
Digital cordless phone (PHS) BLOCK DIAGRAM
to 1stMIX from BBIC to CINpin
QB signal input IB signal input Q signal input I signal input CP1 Charge pump output Vcc(CP)
CP2 Charge pump output
VCO1
LOCK Lock Det. output
LPF
LE Load enable
SI Serial Data
CPS Clock
GND(VCO)
L,C Osc. Cir.
Vcc(VCO) LIMOUT RSSI
GND(CP)
to BBIC (Demod.)
to BBIC
LPF
Control signals of PLL(from BBIC)
1
2
3
4
27
26
25
18
21
20
19
11
6
7
8
9
32
33
ON/OFFControl (from BBIC)
17 CTL1(MainPLL) 16 CTL2(LocalPLL)
E
Vcc(MOD) GND(MOD)
5 48 Ø
CP1
Lock Det
Decoder
CP2
2nd Local VCO
B
15 CTL3(MOD&Up-Conv.) 14 CTL4(LIM&2ndMIX) 13 CTL5(X'tal osc)
GND(SUB)
38
PLL1 (1st Local) 300KHz
PLL2 (2nd Local) 100KHz 1/2
RSSI
34 Vcc(LIM) 31 GND(LIM) DECO...