LT5503EFE Linear Technology, LT5503EFE Datasheet - Page 10
![IC DIRECT IQ MOD/MIXER 20-TSSOP](/photos/6/63/66309/161-20-tssop_sml.jpg)
LT5503EFE
Manufacturer Part Number
LT5503EFE
Description
IC DIRECT IQ MOD/MIXER 20-TSSOP
Manufacturer
Linear Technology
Datasheet
1.LT5503EFE.pdf
(20 pages)
Specifications of LT5503EFE
Function
Modulator/Mixer
Lo Frequency
1.4GHz ~ 2.4GHz
Rf Frequency
1.7GHz ~ 2.7GHz
P1db
-15dBm
Noise Floor
-152dBm/Hz
Output Power
12.7dBm
Current - Supply
38mA
Voltage - Supply
1.8 V ~ 5.25 V
Test Frequency
2.4GHz
Package / Case
20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT5503EFE
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LT5503EFE#PBF
Manufacturer:
LT
Quantity:
1 600
Part Number:
LT5503EFE#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LT5503EFE#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
PI FU CTIO S
LT5503
BQ
Q-Channel. This pin is internally biased to 1.4V, but can
also be overdriven with an external DC voltage greater than
1.4V, but less than V
BQ
Channel. This pin is internally biased to 1.4V, but can also
be overdriven with an external DC voltage greater than
1.4V, but less than V
GC1 (Pin 3): Gain Control Pin. This pin is the least
significant bit of the four-step modulator gain control.
MODIN (Pin 4): Modulator Carrier Input Pin. This pin is
internally biased and should be AC-coupled. An external
matching network is required for a 50Ω source.
V
This pin should be externally connected to the other V
pins and decoupled with 1000pF and 0.1μF capacitors.
V
Input RF Buffer and Phase Shifter. This pin should be
externally connected to the other V
with 1000pF and 0.1μF capacitors.
LO1 (Pin 7): Mixer 1st LO Input Pin. This pin is internally
biased and should be AC-coupled. An external matching
network is required for a 50Ω source.
V
Circuits. This pin should be externally connected to the
other V
capacitors.
DMODE (Pin 9): Mixer 2nd LO Divider Mode Control Pin.
Low = divide-by-2, High = divide-by-1.
MX
be connected to V
work.
MX
be connected to V
work.
10
CC
CC
CC
U
–
+
+
–
MOD (Pin 5): Power Supply Pin for the I/Q Modulator.
RF (Pin 6): Power Supply Pin for the I/Q Modulator
LO1 (Pin 8): Power Supply Pin for the Mixer LO1
(Pin 1): Negative Baseband Input Pin of the Modulator
(Pin 2): Positive Baseband Input Pin of Modulator Q-
(Pin 10): Mixer Positive RF Output Pin. This pin must
(Pin 11): Mixer Negative RF Output Pin. This pin must
CC
U
pins and decoupled with 1000pF and 0.1μF
CC
CC
U
CC
CC
through an external matching net-
through an external matching net-
– 0.4V.
– 0.4V.
CC
pins and decoupled
CC
MIXEN (Pin 12): Mixer Enable Pin. When the input voltage
is higher than V
through pins 8, 10, 11 and 15 are enabled. When the input
voltage is less than 0.4V, these circuits are disabled.
MODEN (Pin 13): Modulator Enable Pin. When the input
voltage is higher than V
supplied through pins 5, 6, 16 and 17 are enabled. When
the input voltage is less than 0.4V, these circuits are
disabled.
LO2 (Pin 14): Mixer 2nd LO Input Pin. This pin is internally
biased and should be AC-coupled. An external matching
network is not required, but can be used for improved
matching to a 50Ω source.
V
Circuits. This pin should be externally connected to the
other V
capacitors.
V
Variable Gain Amplifier. This pin should be externally
connected to the other V
and decoupled with a good high frequency capacitor (2pF
typical) placed close to the pin.
MODOUT (Pin 17): Modulator RF Output Pin. This pin
must be externally biased to V
external matching network is required to match to 50Ω.
GC2 (Pin 18): Gain Control Pin. This pin is the most
significant bit of the four-step modulator gain control.
BI
I-Channel. This pin is internally biased to 1.4V, but can also
be overdriven with an external DC voltage greater than
1.4V, but less than V
BI
tor I-Channel. This pin is internally biased to 1.4V, but can
also be overdriven with an external DC voltage greater than
1.4V, but less than V
Exposed Pad (Pin 21): Circuit Ground Return for the
Entire IC. This must be soldered to the printed circuit board
ground plane
CC
CC
+
–
(Pin 19): Positive Baseband Input Pin of the Modulator
LO2 (Pin 15): Power Supply Pin for the Mixer LO2
VGA (Pin 16): Power Supply Pin for the Modulator
(Pin 20): Negative Baseband Input Pin of the Modula-
CC
pins and decoupled with 1000pF and 0.1μF
CC
– 0.4V, the mixer circuits supplied
CC
CC
CC
– 0.4V.
– 0.4V.
CC
– 0.4V, the modulator circuits
pins through a 47Ω resistor
CC
through a bias choke. An
5503f