ATR7032 Просмотр технического описания (PDF) - Atmel Corporation

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ATR7032

High Gain Power Amplifier for 802.11b/g WLAN Systems

Atmel Corporation 

10.1 Evaluation Board Set-up Instructions

After connection of all cables (RF and DC):

• VCC, VV_PA1, VV_PA2, VRF_Out = 3.3V

• Increase VCTRL until 90 mA quiscent current without RF signal is reached (~ 1.05V)

• Incease input power until desired linear output power is reached

11. Typical Operating Characteristics

Figure 11-1. Typical Gain and Current versus Control Voltage:

Frequency = 2450 MHz; PIn = –40 dBm; VV_PA1 = VV_PA2 = VRF_Out = VCC = 3.3V

40

350

Gain

30

300

Itot

20

250

10

200

IV_PA3

0

150

-10

100

IV_PA2

-20

50

IV_PA1 + IVCC

-30

0

0.6

0.8

1

1.2

1.4

1.6

1.8

2

VCTRL (V)

Figure 11-2. Typical Operating Point for 54 Mbps OFDM Modulation: Frequency = 2450 MHz;

POut = 19 dBm; VV_PA1 = VV_PA2 = VRF_Out = VCC = 3.3V

3.5

180

3

170

I Itot

2.5

160

EVM

2

150

1.5

140

1

130

Operating

Point

0.5

120

0

110

0.9

0.95

1

1.05

1.1

1.15

1.2

VCTRL (V)

8 ATR7032 [Preliminary]

4846B–WLAN–04/05

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