Typical operating characteristics (continued), Pin description – Rainbow Electronics MAX2682 User Manual
Page 8
MAX2680/MAX2681/MAX2682
400MHz to 2.5GHz, Low-Noise,
SiGe Downconverter Mixers
8
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical Operating Circuit, V
CC
= SHDN = +3.0V, P
RFIN
= -25dBm, P
LO
= -5dBm, T
A
= +25°C, unless otherwise noted.)
Pin Description
SHDN
2V/div
IFOUT
50mV/
div
500ns/div
MAX2680
TURN-OFF/ON CHARACTERISTICS
MAX2680/1/2-31
Z1 = 39pF
SHDN
2V/div
IFOUT
50mV/
div
500ns/div
MAX2681
TURN-OFF/ON CHARACTERISTICS
MAX2680/1/2-32
Z1 = 39pF
SHDN
2V/div
IFOUT
50mV/
div
500ns/div
MAX2682
TURN-OFF/ON CHARACTERISTICS
MAX2680/1/2-33
Z2 = 39pF
PIN
Local-Oscillator Input. Apply a local-oscillator signal with an amplitude of -10dBm to 0 (50
Ω
source). AC-
couple this pin to the oscillator with a DC-blocking capacitor. Nominal DC voltage is V
CC
- 0.4V.
LO
1
FUNCTION
NAME
Mixer Ground. Connect to the ground plane with a low-inductance connection.
GND
2
Intermediate Frequency Output. Open-collector output requires an inductor to V
CC
. AC-couple to this pin
with a DC-blocking capacitor. See
Applications Information
section for details on impedance matching.
IFOUT
4
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.
RFIN
3
Supply Voltage Input, +2.7V to +5.5V. Bypass with a capacitor to the ground plane. Capacitor value
depends upon desired operating frequency.
V
CC
5
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
6