HMC496LP3_11 Datasheet, PDF (7/10 Pages) Hittite Microwave Corporation – SiGe WIDEBAND DIRECT MODULATOR RFIC, 4 - 7 GHz

v05.0811
HMC496LP3 / 496LP3E
SiGe WIDEBAND DIRECT
MODULATOR RFIC, 4 - 7 GHz
Pin Descriptions
Pin Number
Function
1, 4, 9, 12
GND
Description
These pins and the ground paddle must be connected
to a high quality RF/DC ground.
11
Differential LO input ports. This device may be driven in either
2, 3
LOP, LON
differential or single ended mode. In single ended mode, one
port should be driven by the LO source while the other port may
be terminated with a 50Ω resistor to ground.
5, 8, 13
6, 7
10, 11
14, 15
16
N/C
QN, QP
RFN, RFP
IP, IN
No Connection required. These pins may be connected to RF/
DC ground without affecting performance.
Differential Quadrature baseband input. These are high
impedance ports. The nominal recommended bias voltage is
between 1.2 - 1.4V. The nominal recommended baseband input
voltage is 1.2V peak to peak differential. By adjusting the DC
bias voltage on ports QN & QP, the Carrier Suppression of the
device can be optimized for a specific frequency band and LO
power level. The typical offset voltage for optimization is less
than 15 mV.
The amplitude and phase difference between the I and Q inputs
can be adjusted in order to optimize the Sideband Suppression
for a specific frequency band and LO power level.
RF Output port. This port is matched to 50 Ohms.
A series capacitor should be connected to this port in
order to prevent the DC supply voltage from appearing
on the customer’s PC board.
Differential Quadrature baseband input. These are high
impedance ports. The nominal recommended bias voltage is
between 1.2 - 1.4V. The nominal recommended baseband input
voltage is 1.2V peak to peak differential. By adjusting the DC
bias voltage on ports IN & IP, the Carrier Suppression of the
device can be optimized for a specific frequency band and LO
power level. The typical offset voltage for optimization is less
than 15 mV.
The amplitude and phase difference between the I and Q inputs
can be adjusted in order to optimize the Sideband Suppression
for a specific frequency band and LO power level.
VCC
Supply voltage. Set to 3.0V for nominal operation. The nominal
current for this port is 93 mA.
Interface Schematic
11 - 7
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