µPC8158K
Supply Pin
Pin
Symbol Voltage Voltage
No.
(V)
(V)Note
Function and Application
12 GND
0
–
Ground pin for modulator, up-
converter and AGC circuits. This pin
should be grounded with minimum
inductance. Form the ground
pattern as widely as possible to
minimize ground impedance.
13 LO2in
–
14 LO2inb
–
1.8
Local signal input for modulator.
This pin must be coupled with DC
cut capacitor 33 pF and should be
terminated with 51 Ω resistor.
1.8
Bypass pin of up-converter’s local
signal input. This pin should be
decoupled with 33 pF capacitor.
15 N.C.
–
–
This pin is not connected to internal
circuit. This pin should be opened
or grounded.
16 GND
0
–
Ground pin for modulator, up-
converter and AGC circuits. This pin
should be grounded with minimum
inductance.
17 VPS/VAGC VPS/VAGC
–
Power save control pin for
modulator, up-converter and AGC
circuits. This pin also assigned as
gain control pin for AGC circuits.
Operation status with applied
voltages are as follows.
VPS/VAGC (V)
STATE
0 to 0.4 OFF (Sleep Mode)
1 to 2.5 On (AGC Mode)
18 N.C.
–
–
19 GND
0
–
20
VCC 2.7 to 4.0
–
21 GND
0
–
This pin is not connected to internal
circuit. This pin should be opened
or grounded.
Ground pin for modulator, up-
converter and AGC circuits. This pin
should be grounded with minimum
inductance.
Supply voltage pin for modulator,
up-converter and AGC circuits.
Ground pin for RF output buffer.
This pin should be grounded with
minimum inductance.
Note Pin Voltages are measured on VCC = 3.0 V.
Internal Equivalent Circuit
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13
14
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REG
17
AGC Cont
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Preliminary Data Sheet P13831EJ1V1DS00
7