RF2637PCK-410 RFMD, RF2637PCK-410 Datasheet - Page 3

• Manufacturer Part Number: RF2637PCK-410
• Description: KIT EVAL FOR RF2637
• Manufacturer: RFMD
• Type: Amplifierr

Specifications of RF2637PCK-410

• Frequency: 12MHz ~ 385MHz
• For Use With/related Products: RF2637
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 689-1058

Rev A6 DS080403
Pin
1
2
3
4
5
6
7
8
Function
OUT+
VCC2
VCC1
GND
OUT-
IN+
GC
IN-
Description
CDMA balanced input pin. This pin is internally DC-biased and should be
DC-blocked if connected to a device with a DC level other than V
present. A DC to connection to V
operation, one pin is used as an input and the other CDMA input is AC-cou-
pled to ground. The balanced input impedance is 1kΩ, while the single-
ended input impedance is 500Ω.
Same as pin 2, except complementary input.
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Analog gain adjustment for all amplifiers. Valid control ranges are from 0V
to 2.5V. Maximum gain is selected with 2.5V. Minimum gain is selected
with 0V. These voltages are only valid for a 4.7kΩ DC source impedance.
Balanced output pin. This is an open-collector output, designed to operate
into a 250Ω balanced load. The load sets the operating impedance, but an
external choke or matching inductor to V
to correctly bias this output. This bias inductor is typically incorporated in
the matching network between the output and next stage. Because this pin
is biased to V
input has a DC path to ground.
Same as pin 5, except complementary output.
Supply voltage pin. External bypassing is required. The trace length
between the pin and the bypass capacitors should be minimized. The
ground side of the bypass capacitors should connect immediately to
ground plane.
Same as pin 7.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
CC
, a DC-blocking capacitor must be used if the next stage’s
CC
is acceptable. For single-ended input
CC
must also be supplied in order
CC
Interface Schematic
See pin 1.
See pin 5.
See pin 7.
CDMA+
OUT+
RF2637
2 3 .5 k Ω
700 Ω
BIAS
V
C C
1 2 .7 k Ω
1 5 k Ω
OUT-
700 Ω
CDMA-
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