max2247ebct Maxim Integrated Products, Inc., max2247ebct Datasheet - Page 6

• Manufacturer Part Number: max2247ebct
• Description: Max2247 2.4ghz Sige Linear Power Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

2.4GHz SiGe Linear Power Amplifier
6
BUMP
_______________________________________________________________________________________
A1
A2
A3
A4
B1
B3
B4
C1
C2
C3
C4
V
REFER TO THE MAX2247 EV KIT FOR LAYOUT AND DESIGN DETAILS.
CC
10nF
PD_OUT
RF_OUT
V
NAME
SHDN
GND2
GND3
GND1
RF_IN
V
INPUT
V
V
BIAS
CC
10nF
CC
CC
CC
RF
B
2
1
22pF
C4
Bias Control. The overall current is set by the current sourced through the bias pin. See the Bias Circuitry
section.
S econd - S tag e D C S up p l y V ol tag e. S ets the b i as and exter nal m atchi ng for the second am p l i fi er stag e.
Req ui r es a sm al l i nd uctance. Byp ass to g r ound usi ng the confi g ur ati on i n the Typ i cal Op er ati ng C i r cui t.
Second-Stage Ground. See the Applications Information section for detailed layout information.
Fi r st- S tag e D C S up p l y V ol tag e. S ets the b i as and exter nal m atchi ng for the fi r st am p l i fi er stag e. Req ui r es a
sm al l i nd uctance. Byp ass to g r ound usi ng the confi g ur ati on i n the Typ i cal Op er ati ng C i r cui t.
Third-Stage Ground. See the Applications Information section for detailed layout information.
Power-Detector Output. This output is a DC voltage indicating the PA output power.
First-Stage and Bias-Control Circuit Ground
RF Output. Open-collector output. Requires a pullup inductor, which is part of the matching network.
Shutdown Input. Drive logic low to place the device in shutdown mode. Drive logic high for normal
operation.
Bias Circuit DC Supply Voltage. Bypass to ground using the configuration in the Typical Operating Circuit.
RF Input. Internally matched to 50 . Requires an external DC-blocking cap.
RF_IN
V
V
CC
CC
B
1
SHUTDOWN
MATCH
INPUT
CONTROL
MAX2247
GND1
Functional Diagram/Typical Operating Circuit
V
CC
10nF
SHDN
GND2
CIRCUIT
BIAS
TRANSMISSION
C5
GND3
V
CC
LINE
DESCRIPTION
2
POWER-DETECTOR
DETECTOR
OUTPUT
PD_OUT
RF_OUT
3.9nH
C3
*NOT REQUIRED FOR OUTPUT POWER
LESS THAN +23dBm.
22pF
Pin Description
C33*
22pF
10nF
RF
OUTPUT
V
CC