ATR3515
ATR3515 is WLAN Power Amplifier manufactured by Atmel.
Features
- Frequency Range 4.9 GHz to 5.9 GHz
- Supply-voltage 2.7 V to 3.6 V
- 3.5% EVM at 19 d Bm Output Power at 54 Mbit/s OFDM
- 25.5 d Bm P1d B
- On-chip Power Detector with 25 d Bm Dynamic Range
- Power-down Mode and Biasing Control
- Low Profile Lead-free Plastic Package QFN16 (4 × 4 × 0.9 mm)
Applications
- IEEE 802.11a OFDM WLAN
- Hiperlan2 WLAN
- PC Cards, PCMCIA
- 5 GHz ISM Band Application
Electrostatic sensitive device. Observe precautions for handling.
5-GHz WLAN Power Amplifier for 802.11a
Description
Preliminary
Process
The 5-GHz power amplifier is designed in Atmel’s advanced Silicon-Germanium (Si Ge) process and provides excellent linearity and noise performance as well as good power-added efficiency.
Circuitry
The PA consists of a two-stage amplifier with a P1db of 25.5 d Bm. The output stage was realized using an open-collector structure. Power-up/down and output level are controlled at bias control pin 6 (VCTL). An on-chip power detector provides a voltage proportional to the output power.
Figure 1. Block Diagram
VCC1 15
RFIN 3
Matching
VCC2 13
RFOUT 11
RFOUT 10
Bias control
Power Detector
6 VCTL
16 VCC_CTL
7 VDET_OUT
Rev. 4514I- WLAN- 07/04
Pin Configuration
Figure 2. Pinning QFN16
VCC_CTL VCC1 GND VCC2
GND NC
RFIN GND
16 15 14 13 1...
