CMX972 Datasheet, PDF (7/41 Pages) CML Microcircuits – Small 32-lead VQFN Package

Quadrature Demodulator with IF PLL/VCO
CMX972
3 Pin List
Pin Name
1~
2~
3~
4~
5 IFIN
6 VCC
7 RXIN
8 RXIP
9 RXQP
10 RXQN
11 ~
12 REFIN
13 DO
14 VCCSYNTH
15 CDATA
16 VDD
17 SCLK
18 RDATA
19 OA2P
20 OA2N
21 OA2O
22 CSN
23 VSS
24 OA1P
25 OA1N
26 OA1O
27 VCON2
28 VCON1
29 VCOP1
30 VCOP2
31 RXLO
32 ~
33* RFGND
Notes: IP
=
OP =
TSOP =
PWR =
NR =
Type
~
~
~
~
IP
PWR
OP
OP
OP
OP
~
IP
OP
PWR
IP
PWR
IP
TSOP
IP
IP
OP
IP
PWR
IP
IP
OP
NR
NR
NR
NR
IP
~
PWR
Function
Do not connect to this pin
Do not connect to this pin
Do not connect to this pin
Do not connect to this pin
IF/RF input signal
Analogue and RF supply
Analogue output for baseband receive I signal
(negative)
Analogue output for baseband receive I signal
(positive)
Analogue output for baseband receive Q signal
(positive)
Analogue output for baseband receive Q signal
(negative)
Do not connect to this pin
PLL frequency reference input
PLL charge pump output
RF supply for synthesiser
C-BUS data input
C-BUS and digital supply
C-BUS clock input
C-BUS data output
Baseband amplifier 2 positive input
Baseband amplifier 2 negative input
Baseband amplifier 2 output
C-BUS chip select
C-BUS and digital ground
Baseband amplifier 1 positive input
Baseband amplifier 1 negative input
Baseband amplifier 1 output
VCO negative port 2
VCO negative port 1
VCO positive port 1
VCO positive port 2
Input for demodulator local oscillator
Do not connect to this pin
Analogue and RF ground
Input
Output
Three-state output
Power connection
Negative resistance VCO port
* Pin 33 is the exposed metal pad on the back of the package and should be connected to the RF
Ground Plane (V_RFGND).
Table 1 Pin List
 2015 CML Microsystems Plc
7
D/972/2