CMX993 Datasheet, PDF (6/26 Pages) CML Microcircuits – Programmable 30dB Output Gain Range

Quadrature Modulator
CMX993/CMX993W
CMX993
Pin No.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
EXPOSED
METAL PAD
CMX993W
Pin No.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
EXPOSED
METAL PAD
Name
NC
NC
VDD
VDDIO
SCLK
CDATA
CSN
RESETN
DVSS
VCC7
A1QP
A1QN
A1QO
A2QP
VEE
Signal
Type
NC
NC
Power
Power
I/P
I/P
I/P
I/P
Power
Power
I/P
I/P
O/P
I/P
Power
Description
reserved, do not connect to this pin
reserved, do not connect to this pin
Digital supply
Supply voltage for digital control interface
C-BUS serial clock
C-BUS command data input
C-BUS enable
General reset (Reset when pin is held LOW)
Digital ground (0V)
Analogue supply
Amplifier 1 positive input (Q channel)
Amplifier 1 negative input (Q channel)
Amplifier 1 Output (Q Channel)
Amplifier 2 positive input (Q channel)
This pad must be connected to analogue ground
(0V)
Table 1 Pin List
I/P = Input
O/P = Output
T/S = 3-state
NC = reserved, do not connect to this pin
3.1 Signal Definitions
Signal
Name
AV_DD
DV_DD
V_DDIO
AV_SS
DV_SS
V_REF
BV_REF
Pins
Usage
VCC1, VCC2, VCC3, VCC4, VCC5, VCC6,
VCC7
VDD
VDDIO
VEE (Metal pad)
DVSS
VREF
BVREF
Power supply for analogue circuits
Power supply for digital circuits
Power supply voltage for digital interface
(C-BUS and RESETN)
Ground for all analogue circuits
Ground for all digital circuits
Connection for decoupling of internal band-
gap reference voltage
Buffered version of V_REF which may be used
for bias of input signals etc.
Table 2 Definition of Power Supply and Reference Voltages
 2013 CML Microsystems Plc
6
D/993/10