MAX2680EUT-T(1998) 查看數據表（PDF） - Maxim Integrated
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MAX2680EUT-T Datasheet PDF : 12 Pages
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400MHz to 2.5GHz, Low-Noise,
SiGe Downconverter Mixers
Typical Operating Characteristics (continued)
(Typical Operating Circuit, VCC = SHDN = +3.0V, PRFIN = -25dBm, PLO = -5dBm, TA = +25°C, unless otherwise noted.)
SHDN
2V/div
MAX2680
TURN-OFF/ON CHARACTERISTICS
SHDN
2V/div
MAX2681
TURN-OFF/ON CHARACTERISTICS
SHDN
2V/div
MAX2682
TURN-OFF/ON CHARACTERISTICS
IFOUT
50mV/
div
Z1 = 39pF
500ns/div
IFOUT
50mV/
div
Z1 = 39pF
500ns/div
IFOUT
50mV/
div
Z2 = 39pF
500ns/div
Pin Description
PIN NAME
FUNCTION
1
LO
Local-Oscillator Input. Apply a local-oscillator signal with an amplitude of -10dBm to 0 (50Ω source). AC-
couple this pin to the oscillator with a DC-blocking capacitor. Nominal DC voltage is VCC - 0.4V.
2
GND Mixer Ground. Connect to the ground plane with a low-inductance connection.
3
RFIN
Radio Frequency Input. AC-couple to this pin with a DC-blocking capacitor. Nominal DC voltage is 1.5V.
See Applications Information section for details on impedance matching.
4
IFOUT
Intermediate Frequency Output. Open-collector output requires an inductor to VCC. AC-couple to this pin
with a DC-blocking capacitor. See Applications Information section for details on impedance matching.
5
VCC
Supply Voltage Input, +2.7V to +5.5V. Bypass with a capacitor to the ground plane. Capacitor value
depends upon desired operating frequency.
6
SHDN
Active-Low Shutdown. Drive low to disable all device functions and reduce the supply current to less than
5µA. For normal operation, drive high or connect to VCC.
8 _______________________________________________________________________________________
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