PBL 402 15
Pin Descriptions (cont.):
Pin number
Name
Function
Schematic in/output of the pin
A diode to GndFM and GndIF
24
GndRSSI
Ground connection to the RSSI.
V
CCRF
25
PA Gate
Output control signal for external PA power on/off.
PA - Gate
GndRF
V
CCIF
26
27
IFIN-
Rx IF inputs to internal channel filtering, limiting
amplifiers,RSSI and FM discriminator. Internally
matched to 300 Ω.
IFIN-/IFIN+
both inputs alike
IFIN+
GndIF
28
29
GndIF
VCCIF
Ground connection to the down IF convertor and
channel filter sections.
Voltage supply to the down IF convertor and
channel filter sections.
A diode to GndFM and GndIF
Clamp to GndIF
VCCRF
30
LD
Lock detect.
LD
GndRF
V
CCRF
31
32
IFOUT-
IFOUT+
Rx IF outputs to external adjacent channel filter.
Internally matched to 300Ω.
IFOUT-/IFOUT+
both outputs alike
GndRF
33, 36
37, 40
GndRF
Ground connection to the RF sections.
A diode to GndIF and GndPLL
V
CCRF
34
35
RX-
RX+
RF inputs to LNA and image reject mixer.
Internally matched to 100Ω.
RX-/RX+
both inputs alike
GndRF
VCCRF
38
39
TX-
TX+
Tx outputs to external PA. Internally matched to
100 Ω. Each output requires an externalchoke
to VCC.
TX-/TX+
Both inputs alike
GndRF
Clamp to GndRF
41
42
VCCRF
GATE
Voltage supply to the RF sections.
VCCPLL
GATE
Bias
Input to gate the Tx output power.
GndPLL
CCPLL
V
43
D
Serial interface, Data .
D
Bias
GndPLL
5
ERICSSON [ ERICSSON ]
