MAX2681 MAXIM [Maxim Integrated Products], MAX2681 Datasheet - Page 8

• Manufacturer Part Number: MAX2681
• Description: 400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers
• Manufacturer: MAXIM [Maxim Integrated Products]

400MHz to 2.5GHz, Low-Noise,
SiGe Downconverter Mixers
(Typical Operating Circuit, V
8
2V/div
50mV/
IFOUT
SHDN
PIN
div
_______________________________________________________________________________________
1
2
3
4
5
6
Z1 = 39pF
TURN-OFF/ON CHARACTERISTICS
NAME
IFOUT
SHDN
GND
RFIN
V
LO
CC
MAX2680
500ns/div
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 V
Mixer Ground. Connect to the ground plane with a low-inductance connection.
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.
Intermediate Frequency Output. Open-collector output requires an inductor to V
with a DC-blocking capacitor. See Applications Information section for details on impedance matching.
Supply Voltage Input, +2.7V to +5.5V. Bypass with a capacitor to the ground plane. Capacitor value
depends upon desired operating frequency.
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 V
CC
= SHDN = +3.0V, P
2V/div
50mV/
SHDN
IFOUT
Typical Operating Characteristics (continued)
div
RFIN
Z1 = 39pF
TURN-OFF/ON CHARACTERISTICS
= -25dBm, P
MAX2681
500ns/div
LO
FUNCTION
= -5dBm, T
CC
.
A
= +25°C, unless otherwise noted.)
50mV/
2V/div
SHDN
IFOUT
div
TURN-OFF/ON CHARACTERISTICS
Z2 = 39pF
CC
Pin Description
. AC-couple to this pin
CC
MAX2682
500ns/div
- 0.4V.