DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC8002
SECOND MIXER + IF AMPLIFIER
FOR DIGITAL CORDLESS TELEPHONES
The
µ
PC8002 is a monolithic IC developed for use in digital cordless telephones. Its internal equivalent circuits
comprise a double balanced mixer (DBM), IF amplifier circuit, and RSSI (Received Signal Strength Indicator) circuit.
The
µ
PC8002 can operate on a wide range of power supply voltages from 2.7 V to 5.5 V, and incorporates a power-
off function, making it ideal for achieving low set power consumption.
The package is a 20-pin plastic shrink SOP (225 mil) suitable for high-density surface mounting.
FEATURES
• Low-voltage, low-consumption-current operation possible (V
CC
= 2.7 to 5.5 V, I
CC
= 3.4 mA at V
CC
= 3 V)
• Wide mixer input frequency range (f
MIX
= 250 MHz (TYP.) to 500 MHz (MAX.))
• Wide IF amplifier input frequency range (f
IF
= 8 MHz (MIN.) to 12 MHz (MAX.), 10.7 MHz (TYP.))
• High limiting sensitivity (S
L
= –100 dBm (TYP.))
• Wide RSSI dynamic range (D
R
= 85 dB (TYP.))
• On-chip power-off function
• Use of 20-pin plastic shrink SOP (225 mil) allows high-density surface mounting
BLOCK DIAGRAM
GND
V
CC
BYPASS3 (IF OUT) (IF OUT) IF2 OUT
14
13
12
11
BYPASS1 IF1 IN
20
19
BYPASS2 IF1 OUT BYPASS4 IF2 IN
18
17
16
15
IF Amp 1
IF Amp 2
Output Stage
Power ON/OFF
2nd MIXER
RSSI
RSSI
1
2
3
4
5
6
7
8
9
10
PD
MIX OUT V
CC
(IF) V
CC
(MIX) LO IN
GND(IF) GND(MIX) MIX IN1 MIX IN2 RSSI OUT
ORDERING INFORMATION
Part Number
Package
20-pin plastic shrink SOP (225 mil)
20-pin plastic shrink SOP (225 mil)
Embossed carrier taping (pin 1 is tape unwinding direction)
20-pin plastic shrink SOP (225 mil)
Embossed carrier taping (pin 1 is tape winding direction)
The information in this document is subject to change without notice.
Document No. S10717EJ2V0DS00 (2nd edition)
Date Published March 1997 N
Printed in Japan
µ
PC8002GR
µ
PC8002GR-E1
µ
PC8002GR-E2
©
1997
µ
PC8002
Application Circuit Example 1 (Using 2 BPFs)
V
CC
1
PD
BYPASS1 20
1000 pF
2
MIX OUT
IF1 IN 19
V
CC
1
µ
F
1000 pF
V
CC
1
µ
F
Lo OSC
3
V
CC
(IF)
BYPASS2 18
1000 pF
4
V
CC
(MIX)
IF1 OUT 17
BPF
CFEC10.7MK1
(MURATA)
DEM
1000 pF
470 pF
5
LO IN
BYPASS4 16
0.01
µ
F
6
GND (IF)
IF2 IN 15
7
GND (MIX)
BYPASS3 14
0.01
µ
F
1st Mixer
470 pF
8
MIX IN1
GND (IF OUT) 13
470 pF
9
MIX IN2
V
CC
(IF OUT) 12
1
µ
F
V
CC
ADC
10 RSSI OUT
1000 pF
IF2 OUT 11
Caution
Ensure that the pin voltage does not exceed the power supply voltage.
Remark
The V
CC
pass capacitors (1
µ
F, 1000 pF) should be located close to the respective V
CC
pins.
Chip laminated ceramic capacitors (MURATA GRM36 or equivalent) should be used.
2
BPF
CFEC10.7MK1
(MURATA)
µ
PC8002
Application Circuit Example 2 (Using 1 BPF)
V
CC
1
PD
BYPASS1 20
1000 pF
2
MIX OUT
IF1 IN 19
V
CC
1
µ
F
1000 pF
V
CC
1
µ
F
Lo OSC
3
V
CC
(IF)
BYPASS2 18
1000 pF
4
V
CC
(MIX)
IF1 OUT 17
BPF
CFEC10.7MK1
(MURATA)
DEM
1000 pF
470 pF
5
LO IN
BYPASS4 16
0.01
µ
F
6
GND (IF)
IF2 IN 15
7
GND (MIX)
BYPASS3 14
0.01
µ
F
1st Mixer
470 pF
8
MIX IN1
GND (IF OUT) 13
470 pF
9
MIX IN2
V
CC
(IF OUT) 12
1
µ
F
V
CC
ADC
10 RSSI OUT
1000 pF
IF2 OUT 11
Cautions 1.
2.
Ensure that the pin voltage does not exceed the power supply voltage.
With this application circuit, confirm that there is not problem with interfering wave
characteristics.
Remark
The V
CC
pass capacitors (1
µ
F, 1000 pF) should be located close to the respective V
CC
pins.
Chip laminated ceramic capacitors (MURATA GRM36 or equivalent) should be used.
330 pF
3
µ
PC8002
Application Circuit Example 3 (Using 1 BPF)
V
CC
1
PD
BYPASS1 20
1000 pF
2
MIX OUT
IF1 IN 19
V
CC
1
µ
F
1000 pF
V
CC
1
µ
F
Lo OSC
3
V
CC
(IF)
BYPASS2 18
1000 pF
4
V
CC
(MIX)
IF1 OUT 17
390
Ω
1000 pF
470 pF
5
LO IN
BYPASS4 16
0.01
µ
F
6
GND (IF)
IF2 IN 15
1000 pF
7
GND (MIX)
BYPASS3 14
0.01
µ
F
1st Mixer
470 pF
8
MIX IN1
GND (IF OUT) 13
470 pF
9
MIX IN2
V
CC
(IF OUT) 12
1
µ
F
V
CC
10 RSSI OUT
Cautions 1.
2.
With this application circuit, good interfering wave characteristics are obtained with a single
BPF. However, there is a drop in sensitivity.
Ensure that the pin voltage does not exceed the power supply voltage.
Remark
The V
CC
pass capacitors (1
µ
F, 1000 pF) should be located close to the respective V
CC
pins.
Chip laminated ceramic capacitors (MURATA GRM36 or equivalent) should be used.
4
DEM
ADC
1000 pF
IF2 OUT 11
BPF
CFEC10.7MK1
(MURATA)
µ
PC8002
Application Circuit Example 4 (Using 1 BPF)
V
CC
1
PD
BYPASS1 20
1000 pF
2
MIX OUT
IF1 IN 19
V
CC
1
µ
F
1000 pF
V
CC
1
µ
F
3
V
CC
(IF)
BYPASS2 18
1000 pF
4
V
CC
(MIX)
IF1 OUT 17
Lo OSC
1000 pF
470 pF
5
LO IN
BYPASS4 16
0.01
µ
F
6
GND (IF)
IF2 IN 15
1000 pF
1.5
µ
H
7
GND (MIX)
BYPASS3 14
0.01
µ
F
150 pF
1st Mixer
470 pF
8
MIX IN1
GND (IF OUT) 13
470 pF
9
MIX IN2
V
CC
(IF OUT) 12
1
µ
F
V
CC
10 RSSI OUT
Cautions 1. With this application circuit, good interfering wave characteristics are obtained with a single
BPF (and sensitivity is better than in Application Circuit Example 3).
2. Ensure that the pin voltage does not exceed the power supply voltage.
Remark
The V
CC
pass capacitors (1
µ
F, 1000 pF) should be located close to the respective V
CC
pins.
Chip laminated ceramic capacitors (MURATA GRM36 or equivalent) and a chip coil (MURATA LQHIN
or equivalent) should be used.
DEM
ADC
1000 pF
IF2 OUT 11
1000 pF
390
Ω
BPF
CFEC10.7MK1
(MURATA)
5
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