INTEGRATED CIRCUITS SA2411 +20 dBm single chip linear amplifier for WLAN Product data Supersedes data of 2002 Jul 31 2003 Feb 07
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 1. DESCRIPTION The SA2411 is a linear power amplifier designed for WLAN application in the 2.4 GHz band. Together with the SA2400A the chips form a complete 802.11b transceiver. The SA2411 is a Si power amplifier with integrated matching and power level detector. 2.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 5. PINNING INFORMATION 1 16 VDD_BIAS 2 15 PWRUP GND 3 14 GND IN+ 4 IN– 5 SA2411DH VDD_MAIN VDD_DRIVER 13 RF_GND 12 ANT GND 6 DETECTOR 7 10 MODE GND 8 9 11 GND GND SR02384 Figure 2. Pin configuration Table 2.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 6. FUNCTIONAL DESCRIPTION The main building-blocks are: • Fixed gain amplifier (PA) • Output matching • Input matching • Power Detector • Power Mode Input The device has differential inputs so a balun is needed in the case of single ended operation, input impedance is approximately 75 Ω + 25j Ω, balanced. The inputs can be DC biased with the pin VDD_DRIVER.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 7. CONNECTIVITY DIAGRAM ANT VDD PWRUP R1 MODE DET GND GND GND ANT GND GND VDD C1 PwrUp L1 SA2411 GND IN– IN+ GND VDD C2 VDD L2 Idet. R2 L3 C4 C3 Vdet RFin RFin SR02385 C1, C2, C3 = 5.6 pF C4 = 10 nF R1 = optional connect to ground via 0 W resistor.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 8. OPERATION The SA2411 linear amplifier is intended for operation in the 2.4 GHz band, specifically for IEEE 802.11 1 and 2 Mbits/s DSSS, and 5.5 and 11 Msymbols/s CCK standards. Throughout this document, the operating RF frequency refers to the ISM band between 2.4 and 2.5 GHz.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 9. OPERATING CONDITIONS The SA2411 shall meet all of the operating conditions outlined in this section. Table 3 specifies the absolute maximum ratings for the device. Table 4 gives the recommended operating conditions. Table 3. Absolute maximum ratings Symbol Parameter Min Max Unit Tstg Storage temperature –55 +150 °C VDDa Supply voltage (analog) –0.5 +3.85 V – Voltage applied to inputs –0.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 Table 6. SA2411 Detector specification Tamb = 25 °C, VCC = 3.0 V Specification Condition, Remarks Min Nom Max Units Detector sensitivity With 5 kΩ load resistor to ground – 49 – mW/V2 Detector accuracy per sample At 16 dBm –40 °C to +80 °C; from 2.7 V to 3.6 V – 0.3 – dB Absolute accuracy From sample to sample – 0.5 – dB GENERAL Detector quadratic factor – 1.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 The next eight graphs are presenting the power sweep for both gain modes at nominal conditions. Output Power versus Input Power Efficiency versus Output Power 22 25.0% 20.0% Efficiency @ 2.7Volt Pout[dBm] 20 18 16 14 15.0% 10.0% 5.0% 12 10 0.0% –4 –2 0 2 4 6 Pin[dbm] 8 –2 2 6 10 14 18 22 Pout[dbm] SR02466 SR02468 Figure 5. Output power vs. input power Figure 7. Efficiency vs.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 Detector Voltage versus Output Power ACPR versus Output Power 2 –25 1.5 Detector[V] ACPR[dBc] –30 –35 0.5 –40 0 –45 8 7 12 17 12 14 16 18 20 SR02470 22 SR02472 Figure 11. Detector voltage vs. output power Figure 9. ACPR vs. output power Detector Error versus Output Power ALT versus Output Power 1.0 –50 0.5 Detector error[dB] –46 –54 0.0 –0.5 –58 –1.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 The next curves present the frequency dependency for an input power of +7 dBm: Efficiency versus Frequency Output Power versus Frequency 20.0% 15.0% 20 Eficiency[%] Output Power[dBm] 21 19 10.0% 18 5.0% 17 2.40E+00 2.43E+00 2.45E+00 2.48E+00 2.50E+00 0.0% 2.40E+00 Frequency[GHz] Figure 13. Output power vs. frequency 2.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 Detector Errror versus Frequency 1.0 –50 0.5 Detector Error[dB] ALT[dBc] ALT versus Frequency –48 –52 –0.5 –54 –56 2.40E+00 2.43E+00 2.45E+00 2.48E+00 –1.0 2.40E+00 2.50E+00 SR02478 Detector Voltage versus Frequency Detector voltage[V] 1.5 1 0.5 2.45E+00 2.48E+00 2.50E+00 Figure 19. Detector error vs. frequency 2 2.43E+00 2.45E+00 SR02480 Figure 17. ALT vs. frequency 0 2.40E+00 2.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 The last 5 curves are characterization data for supply voltage, temperature and power. The worst-case scenario is the combination of highest temperature/lowest supply. The best-case scenario is the combination of lowest temperature and highest supply voltage. The data has been taken using a non-modulated carrier at 2.5 GHz. ÎÎÎ ÏÏ ÏÏ ÏÎÏÎÏÏ ÏÎÎÎ ÏÏ ÏÏ Ï Ï ÎÎ Ï ÎÎ ÎÎ ÏÏÏ ÏÏ ÎÎÎ ÎÎ ÎÎÎÎ Î –30 30.00 45.00 0 28.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 12. APPLICATION WITH THE SA2400A Next diagram is the application of the SA2400A with the SA2411. The interface is simple. Two equal microstrip lines connect the SA2400A with the SA2411. The length of this connection should be kept to a minimum. The supply for the open collectors of the SA2400A is provided via pin 2 of the SA2411. C2 is for supply voltage decoupling.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 REVISION HISTORY Rev Date Description _3 20030207 Product data (9397 750 10825); ECN 853-2346 29486 of 07 February 2003; supersedes Preliminary data SA2411 revision 2 of 31 July 2002 (9397 750 10166). Modifications: • Features (Section 2.) – First bullet: from “75 Ω” to “75 Ω + 25j Ω ” – delete bullet “1 dB attenuator” • Block diagram: signal “Power mode” changed to “Power-up power mode”.
Philips Semiconductors Product data +20 dBm single chip linear amplifier for WLAN SA2411 Data sheet status Level Data sheet status [1] Product status [2] [3] Definitions I Objective data Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. II Preliminary data Qualification This data sheet contains data from the preliminary specification.
