LT5516EUF Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT5516EUF Datasheet PDF : 12 Pages
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LT5516
PI FU CTIO S
GND (Pins 1, 4): Ground Pin.
RF+, RF– (Pins 2, 3): Differential RF Input Pins. These
pins are internally biased to 1.54V. They must be driven
with a differential signal. An external matching network is
required for impedance transformation.
VCC (Pins 5, 8, 9, 12): Power Supply Pins. These pins
should be decoupled using 1000pF and 0.1µF capacitors.
VCM (Pin 6): Common Mode and DC Return for the I-Mixer
and Q-Mixer. An external resistor must be connected
between this pin and ground to set the dc bias current of
the I/Q demodulator.
EN (Pin 7): Enable Pin. When the input voltage is higher
than 1.6V, the circuit is completely turned on. When the
input voltage is less than 1.3V, the circuit is turned off.
LO+, LO– (Pins 10, 11): Differential Local Oscillator Input
Pins. These pins are internally biased to 2.44V. They can
be driven single-ended by connecting one to an AC ground
through a 1000pF capacitor. However, differential input
drive is recommended to minimize LO feedthrough to the
RF input pins.
QOUT–, QOUT+ (Pins 13, 14): Differential Baseband Output
Pins of the Q-Channel. The internal DC bias voltage is VCC
–0.68V for each pin.
IOUT–, IOUT+ (Pins 15, 16): Differential Baseband Output
Pins of the I-Channel. The internal DC bias voltage is VCC
–0.68V for each pin.
GROUND (Pin 17, Backside Contact): Ground Return for
the Entire IC. This pin must be soldered to the printed
circuit board ground plane.
BLOCK DIAGRA
VCC VCC VCC VCC
5 8 9 12
I-MIXER
RF+ 2
RF – 3
RF AMP
LO BUFFERS
VCM 6
BIAS
7
EN
Q-MIXER
1 4 17
GND GND
LPF
0°/90°
LPF
16 IOUT+
15 IOUT–
14 QOUT+
13 QOUT–
10 11
LO+ LO–
5516 BD
5516fa
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