FMPA2300 Datasheet, PDF (7/9 Pages) Fairchild Semiconductor – 2.3-2.4GHz WiMax/WiBro Linear Power Amplifier

Evaluation Board Turn-On Sequence⁽⁴⁾
Recommended turn-on sequence:
1. Connect common ground terminal to the Ground (GND) pin on the board.
2. Apply positive supply voltage VC1 (=3.4V) to pin VCC1 (first stage collector).
3. Apply positive supply voltage VC2 (=3.4V) to pin VCC2 (second stage collector).
4. Apply positive bias voltage VREF12 (=2.85V) to pin VREF (bias networks).
5. At this point, you should expect to observe the following positive currents flowing into the pins:
Pin
Current
VREF12
7.0–9.0mA
VCC1
50.0–60.0mA
VCC2
70.0–80.0mA
6. Apply input RF power to SMA connector pin RFIN. Currents in pins VC1 and VC2 will vary depending on the input
drive level.
7. Vary positive voltage on pin VREF12 from +2.85 V to +0 V to shut down the amplifier or alter the power level.
Shut down current flow into the pins:
Pin
Current
VCC1
<1nA
VCC2
<1nA
Recommended turn-off sequence:
Use reverse order described in the turn-on sequence above.
Note:
4. Turn on sequence is not critical and it is not necessary to sequence power supplies in actual system level design.
Package Outline
I/O 1 INDICATOR
TOP VIEW
1
8
2
7
3.00^{+–0.1.5000} mm SQ.
3
6
4
FRONT VIEW
5
0.60mm Mold
Head Height
23X0Y0TT
1.10mm MAX.
4X R .20mm
4
Back Side Solder Mask
3
2
See Detail A
1
0.80mm
1.40mm
BOTTOM VIEW
0.44
5
6
2.65mm
7
8
0.175mm
2
0.40mm
1
0.40mm
0.10mm
0.40mm
0.10mm
Detail A
FMPA2300 Rev. A
7
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