CMX994 Datasheet, PDF (7/61 Pages) CML Microcircuits – Local Oscillator

Direct Conversion Receivers
4 Pin and Signal List
CMX994/CMX994A/CMX994E
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
EXPOSED
METAL PAD
Pin Name
IFLT2N
IFLT1P
IFLT1N
VCCRXIF
VCCLNA
LNAIN
LNAOUT
VCCRF
MIXIN
TXLO
VCCLO
LOP
LON
VCOP1
VCOP2
VCON1
VCON2
VCCSYNTH
FREF
DO
DGND
TXEN
RXEN
CSN
RDATA
SCLK
CDATA
RESETN
DVDD
VDDIO
RREF
QFLT1N
QFLT1P
QFLT2N
QFLT2P
RXQP
RXQN
RXIP
RXIN
IFLT2P
AGND
Type
IP
IP
IP
PWR
PWR
IP
OP
PWR
IP
OP
PWR
IP
IP
IP
IP
IP
IP
PWR
IP
OP
PWR
IP
IP
IP
TSOP
IP
IP
IP
PWR
PWR
IP
IP
IP
IP
IP
OP
OP
OP
OP
IP
PWR
Pin Function
I channel 2^nd filter capacitor negative
I channel 1^st filter capacitor positive
I channel 1^st filter capacitor negative
Supply for baseband circuits
Supply for LNA
LNA input
LNA output
Supply for RF circuits
Rx mixer input
LO output for Tx
Supply for LO sections
PLL LO positive input
PLL LO negative input
PLL VCO positive input 1
PLL VCO positive input 2
PLL VCO1 negative input 1
PLL VCO1 negative input 2
Supply to Integer N PLL
Reference frequency input
PLL Charge Pump output
Digital ground
Tx Enable
Rx Enable
C-BUS Chip Select
C-BUS Data output
C-BUS Clock input
C-BUS Data input
C-BUS/Device Reset (Reset when pin Low)
Supply to digital circuits
Supply to C-BUS circuits
Reference resistor for I/Q Filters
Q channel 1^st filter capacitor negative
Q channel 1^st filter capacitor positive
Q channel 2^nd filter capacitor negative
Q channel 2^nd filter capacitor positive
RxQ positive output
RxQ negative output
RxI positive output
RxI negative output
I channel 2^nd filter capacitor positive
The exposed metal pad must be electrically connected to
analogue ground.
Total = 41 Pins (40 pins and central, exposed metal ground pad)
 2015 CML Microsystems Plc
Page 7 of 70
D/994_A_E/1