 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| HFA3926 Data Sheet July 1998 File Number 4282.2 2.0GHz - 2.7GHz 250mW Power Amplifier The Intersil HFA3926 is an integrated power amplifier in a low cost SSOP 28 plastic package. The power amplifier delivers +27dB of gain with high efficiency and can be operated with voltages as low as 2.7V. TM Features * Highly Integrated Power Amplifier * Operates Over 2.7V to 6V Supply Voltage * High Linear Output Power (P1dB: +24.5dBm) * Low Cost SSOP-28 Plastic Package The HFA3926 is ideally suited for QPSK, BPSK or other linearly modulated systems in the 2.4GHz Industrial, Scientific, and Medical (ISM) frequency band. It can also be used in GFSK systems where levels of +25dBm are required. Typical applications include Wireless Local Area Network (WLAN) and Wireless Local Loop systems. REMEMBER: Always apply Negative power to the VG pins before applying the Positive VDD bias. Failure to do so may result in the destruction of the HFA3926 Power Amplifier. Applications * Wireless Local Loop Systems * Systems Targeting IEEE 802.11 Standard * TDD Quadrature-Modulated Communication Systems * Wireless Local Area Networks * PCMCIA Wireless Transceivers * ISM Systems Ordering Information PART NUMBER HFA3926IA HFA3926IA96 TEMP. RANGE (oC) -40 to 85 -40 to 85 PACKAGE 28 Ld SSOP Tape and Reel PKG. NO. M28.15 Functional Block Diagram VDDX(+) VGX(-) STAGE BIAS CONTROL Pinout HFA3926 (SSOP) TOP VIEW RF IN GND GND GND GND GND GND GND N/C VG2 1 2 3 4 5 6 7 8 9 28 GND 27 VDD 26 GND 25 RF OUT 24 GND 23 VDD3 22 GND 21 GND 20 GND 19 GND 18 VDD2 17 VG3 16 GND 15 RF IN STAGE 1 STAGE 2 STAGE 3 ANT GND 10 VDD1 11 GND 12 GND 13 VG1 14 2-229 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright (c) Intersil Corporation 1999 PRISM(R) is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation. HFA3926 Pin Description PINS 1 2 3 4 5 6 7 8 9 VG2 GND VDD1 GND GND VG1 RF IN GND VG3 VDD2 GND VDD3 GND RF OUT GND VDD GND SYMBOL GND GND GND GND GND GND GND DC and RF Ground. DC and RF Ground. DC and RF Ground. DC and RF Ground. DC and RF Ground. DC and RF Ground. DC and RF Ground. No connect. Negative bias control for the second PA stage, adjusted to set VDD2 quiescent bias current, which is typically 53mA. Typical voltage at pin = -0.75V. Input impedance: > 1M. DC and RF Ground. Positive bias for the first stage of the PA, 2.7V to 6V. DC and RF Ground. DC and RF Ground. Negative bias control for the first PA stage, adjusted to set VDD1 quiescent bias current, which is typically 20mA. Typical voltage at pin = -0.75V. Input impedance: > 1M. RF Input of the Power Amplifier. DC and RF Ground. Negative bias control for the third PA stage, adjusted to set VDD3 quiescent bias current, which is typically 90mA. Typical voltage at pin = -0.95V. Input impedance: > 1M. Positive bias for the second stage of the PA. 2.7V to 6V. DC and RF Ground. Positive bias for the third stage of the PA. 2.7V to 6V. DC and RF Ground. RF output of power amplifier. DC and RF Ground. VDD. DC and RF Ground. DESCRIPTION 10 11 12 13 14 15 16S 17 18 19-22 23 24 25 26 27 28 NOTE: Process variation will effect VG3 voltage requirement to develop 90mA stage 3 quiescent current, maximum range = -0.69V to -1.04V. 2-230 HFA3926 Absolute Maximum Ratings Maximum Input Power (Note 1) . . . . . . . . . . . . . . . . . . . . . . +23dBm Operating Voltages (Notes 1, 2). . . . . . . . . . . . VDD = 8V, VGG = -8V Thermal Information Thermal Resistance (Typical, Note 3) JA (oC/W) SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 1. Ambient temperature (TA) = 25oC. 2. |VDD | + |VGG | not to exceed 12V. 3. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications TA = 25oC, Z0 = 50, VDD = +5V, PIN = -30dBm, f = 2.45GHz, Unless Otherwise Specified MIN 2.0 TYP MAX 2.7 UNITS GHz PARAMETER Power Amplifier Input Frequency Range Linear Gain 2.0GHz - 2.5GHz 2.5GHz - 2.7GHz VSWR In/Out Input Return Loss Output Return Loss Output Power at P1dB 2.0GHz - 2.7GHz Second Harmonic at P1dB Third Harmonic at P1dB IDD at P1dB (VDD1 + VDD2 + VDD3) 27 23.5 23 - 28 27 1.75:1 -11.3 -11.3 24.5 -20 -30 270 32 0 -10 375 dB dB dB dB dBm dBc dBc mA Typical Performance Curves Power Amplifier Small Signal Performance NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively. 35 6V -5 4V VDD1 = VDD2 = VDD3 -10 3V GAIN (dB) 25 RETURN LOSS (dB) 5V 30 -15 20 -20 4V -25 3V 5V 6V 15 10 2.0 2.2 2.4 2.6 FREQUENCY (GHz) 2.8 3.0 -30 2.0 2.2 2.4 2.6 FREQUENCY (GHz) 2.8 3.0 FIGURE 1. LINEAR GAIN FIGURE 2. INPUT MATCH 2-231 HFA3926 Typical Performance Curves 0 (Continued) RETURN LOSS (dB) -5 -10 5V -15 3V 4V -20 2.0 6V 2.2 2.4 2.6 FREQUENCY (GHz) 2.8 3.0 FIGURE 3. OUTPUT MATCH Power Amplifier CW Performance at Various Supply Voltages NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively. 30 2.45GHz, VDD1 = VDD2 = VDD3 5V 25 4V POWER (dBm) 3V 20 EFFICIENCY (%) 30 3V 20 6V 40 6V 4V 50 2.45GHz, VDD1 = VDD2 = VDD3 5V 15 10 10 5 -19 -14 -9 POWER INPUT (dBm) -4 1 0 -19 -14 -9 INPUT POWER (dBm) -4 1 FIGURE 4. POWER OUTPUT FIGURE 5. POWER ADDED EFFICIENCY 0 6V -1 COMPRESSION (dBm) 5V -2 4V -3 3V -4 -5 -6 -7 -19 2.45GHz, VDD1 = VDD2 = VDD3 -14 -9 INPUT POWER (dBm) -4 1 FIGURE 6. GAIN COMPRESSION 2-232 HFA3926 Typical Performance Curves (Continued) Power Amplifier Temperature Performance NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively. 35 30 2.45GHz, VDD1 = VDD2 = VDD3 = +5V 30 POWER (dBm) 25oC GAIN (dB) 25 70oC 20 -20oC 20 15 10 25oC 25 -20oC 70oC 15 5 10 2.0 VDD1 = VDD2 = VDD3 = +5V 2.2 2.4 2.6 FREQUENCY (GHz) 2.8 3.0 0 -19 -14 -9 INPUT POWER (dBm) -4 1 FIGURE 7. LINEAR GAIN 0 FIGURE 8. POWER OUTPUT -1 COMPRESSION (dB) -20oC -2 25oC -3 70oC -4 2.45GHz, VDD1 = VDD2 = VDD3 = +5V -5 -20 -10 -5 -15 INPUT POWER (dBm) 0 5 FIGURE 9. GAIN COMPRESSION Power Amplifier Spurious Response at Various Supply Voltages NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3 adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively. 50 2.45GHz, TONE SPACING 600kHz 70 2.45GHz, VDD1 = VDD2 = VDD3 65 40 IMR (dBc) 3V 60 5V 6V 30 5V dBc 55 6V 50 4V 20 3V 4V 45 40 35 10 9 13 17 21 FUNDAMENTAL POUT OF TONES (dBm) 25 15 17 19 21 FUNDAMENTAL POUT (dBm) 23 25 FIGURE 10. THIRD ORDER INTERMODULATION RATIO FIGURE 11. SECOND HARMONIC RATIO 2-233 HFA3926 Typical Performance Curves 60 (Continued) 55 6V 50 dBc 5V 45 4V 40 3V 35 15 2.45GHz, VDD1 = VDD2 = VDD3 17 19 21 FUNDAMENTAL POUT (dBm) 23 25 FIGURE 12. THIRD HARMONIC RATIO Typical Application Example VDD C8 1 2 3 4 5 6 7 VG2 (-) R3 R6 C11 N/C 8 9 10 VDD1 (+) 11 C22 C12 C5 12 13 VG1 (-) R2 R5 C13 C23 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 RF IN C14 R4 R1 VG3 (-) C3 C15 C18 VDD2 (+) C4 C16 C19 C24 VDD3 (+) RF OUT C21 EXTERNAL CIRCUITRY PARTS LIST LABEL C3 - C5, C7, C8 C23 - C24 C11 - C16 C18 - C22 R1, R6 R3, R5 R2 R4 VALUE 22pF 22pF 1000pF 0.01F 1.5k 5k 12k 1k PURPOSE Bypass (GHz) DC Block Bypass (MHz) Bypass (kHz) FET Gate Divider Network NOTE: All off-chip components are low cost surface mount components obtainable from multiple sources. (0.020in x 0.040in or 0.030in x 0.050in.) 2-234 HFA3926 Typical Application Example: Positive Supply, Single Stage 3 Adjustment Circuit 1000pF 1 GND GND 28 5pF HFA3926 2 GND 3 GND 4 GND 5 GND 6 GND 0.1F N/C 715 9 VG2 0.1F 3.01K 10 GND 11 VDD1 12 GND 13 GND 715 14 VG1 0.1F 3.01K RF IN 15 22pF RF IN GND 20 GND 19 VDD2 18 VG3 17 0.1F GND 16 7 GND 8 VDD 27 GND 26 25 GND 24 VDD3 23 GND 22 GND 21 RF OUT 22pF VCC1 VCC2 820 0.1F 8 7 6 5 10K 4.7F + TANTL - 1K +IN ICL7660SIBA SUPER VOLTAGE CONVERTER -OUT + TO -V CONVERTER 1 2 3 4 MMBT 2222 ALTM MotorolaTM VCC1 = +5V VCC2 = +3.5V + - 4.7F TANTL FIGURE 13. POSITIVE, SINGLE STAGE 3 ADJUSTMENT CIRCUIT All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web site http://www.intersil.com 2-235 |
Price & Availability of HFA3926
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |