ACPM-7891 HP | Alldatasheet

Document overview

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Technical content

Features

  • Highest Power Added Efficiency in the industry
  • Performance guaranteed for GPRS Class 10 (2-Slot) transmit operation
  • Broadband DCS/PCS match for flat Pout and PAE
  • Low harmonics
  • Single 3.5 Volt supply (nominal)
  • 50 Ohms input & output impedance
  • Small SMT package 6 x 12 x 1.4 mm Specifications
  • 60% PAE at +35 dBm Pout for ESGM
  • 56% PAE at +32.5 dBm Pout for DCS 1800
  • 56% PAE at +32.5 dBm Pout for PCS 1900

Applications

  • Cellular handsets
  • Data modules for PDA
  • Data cards for laptops

13 Gnd

12 Gnd

11 RFout

10 Gnd

Vdd1,2 DCS/PCS Gnd Vdd1,2 Bypass Gnd Gnd Vdd1,2 Bypass Vdd1,2 EGSM 24 Gnd Vapc EGSM Gnd YYWWDDLLLL Agilent ACPM-7891 Vdd3 EGSM Gnd Vapc DCS/PCS Gnd Vdd3 DCS/PCS Pin Connections and Package Marking Notes: Package marking provides orientation and identification. “YYWWDDLLLL” = Year, Week, Day and Lot Code indicates the year, week, day and lot of manufacture.

V Pin max Input Power dBm +10 Vapc Gain Control Voltage V IDS Operating Case Temperature -30 to 90 TSTG Storage Temperature -40 to 125 Common Electrical Characteristics Test conditions Vdd = +3.5V, a pulse width of 1154 µs and a duty cycle of 25% at a case temperature of +25°C unless otherwise stated. Parameter Test Conditions Symbol Min Typ Max Units Supply Voltage Vdd 2.7 3.5 5.3 V Leakage Current Vapc= 0.06V Idd µA Control Voltage Range Vapc Vdd–0.3 V Control Current Iapc mA Nominal Input Impedance Zin Ω Nominal Output Impedance Zout Ω Rise And Fall Time Tr to (Pout1– 0.5 dB) Vapc set to achieve Pout1 tr,tf µs

Test conditions Vdd= +3.5V, a pulse width of 1154 µs and a duty cycle of 25% at a case temperature of +25°C unless otherwise stated. Parameter Test Conditions Symbol Min Typ Max Units Frequency Range Fo 880 900 915 MHz Output Power Nominal Conditions Pin = +2 dBm Pout1 34.5 dBm Vapc = 2.2V Efficiency Pout=Pout1 PAE Output Power in off mode Vapc = 0.2V, Pin = 4 dBm -40 -36 dBm Input Power Pin dBm Input VSWR Pin = 0 dBm 1.5 2.5 Stability Vdd = 3.0 to 5.3V, No parasitic oscillation > -36 dBm Pin = 0– 4 dBm, Pout ≤34.5 dBm, Vapc ≤2.2V, VSWR ≤8:1, all phases Load mismatch robustness Vdd = 3.0 to 5.3V, No module damage or permanent degradation Pin = 0– 4 dBm, Pout ≤34.5 dBm, Vapc ≤2.2V, VSWR ≤10:1, all phases t = 20 sec Second Harmonic Vdd = 3.5V 2Fo dBm Pin = 0 dBm Pout = 34.5 dBm Vapc = controlled for Pout Third Harmonic Vdd = 3.5V 3Fo dBm Pin = 0 dBm Pout = 34.5 dBm Vapc = controlled for Pout Fourth to Eighth Harmonics Vdd = 3.5V 4Fo-8Fo -10 dBm Pin = 0 dBm Pout = 34.5 dBm Vapc = controlled for Pout Noise Power F=925 to 935 MHz, Pn -72 dBm Pout ≤34.0 dBm, Pin = 0 dBm RBW = 100 kHz F = 925 to 960 MHz, Pn -82 dBm Pout ≤34.0 dBm, Pin = 0 dBm RBW = 100 kHz Band to Band Isolation Measured at DCS freq EGSM signal: -25 dBm Vdd = 3.5V Pin = +2 dBm Pout = 34.5 dBm (fixed) Control Slope (Peak) Pout = -5 dBm to Pout 400 dB/V AM-AM Pin = 0– 4 dBm dB/dB Pout = 6 dBm to Pout AM-PM Pin = 0– 4 dBm deg/dB Pout = 6 dBm to Pout

DCS & PCS Electrical Characteristics Test conditions Vdd= +3.5V, a pulse width of 1154 µs and a duty cycle of 25% at a case temperature of +25°C unless otherwise stated. Parameter Test Conditions Symbol Min Typ Max Units Frequency Range DCS Fo 1710 1750 1785 MHz PCS 1850 1880 1910 Output Power Nominal Conditions Pin = 2 dBm Pout1 32.0 32.5 dBm Vapc = 2.2V Efficiency Pout = Pout1 DCS PAE PCS PAE Output Power in off mode Vapc = 0.2V, Pin = 4 dBm -40 -36 dBm Input Power Pin dBm Input VSWR Pin = 0 dBm 1.5 2.5 Stability Vdd = 3.0 to 5.3V, No parasitic oscillation > -36 dBm Pin = 0– 4 dBm, Pout ≤32 dBm, Vapc ≤2.2V, VSWR ≤8:1, all phases Load mismatch robustness Vdd = 5.3V, No module damage or permanent degradation Pin = 0– 4 dBm, Pout ≤32 dBm, Vapc ≤2.2V, VSWR ≤10:1, all phases t = 20 sec Second Harmonic Vdd = 3.5V 2Fo dBm Pin = 0 dBm Pout = 32 dBm Vapc = controlled for Pout Third Harmonic Vdd = 3.5V 3Fo dBm Pin = 0 dBm Pout = 32 dBm Vapc = controlled for Pout Fourth to Eighth Harmonics Vdd = 3.5V 4Fo – 8Fo -10 dBm Pin = 0 dBm Pout = 32 dBm Vapc = controlled for Pout Noise Power F = 1805 to 1880 MHz, Pn -77 dBm F = 1930 to 1990 MHz, Pout ≤31.5 dBm, Pin = 0 dBm RBW = 100 kHz Control Slope (Peak) Pout = -5 dBm to Pout1 350 dB/V AM-AM Pin = 0– 4 dBm dB/dB Pout = 6 dBm to Pout1 AM-PM Pin = 0– 4 dBm deg/dB Pout = 6 dBm to Pout1

Test conditions Vdd= +3.5V, a pulse width of 1154 µs and a duty cycle of 25% at a case temperature of +25°C unless otherwise stated. Psat: Pin = 0 dBm; Vapc = 2.2V Pout (dBm) PAE (%)

880 MHz

900 MHz

915 MHz

Class 8 (1-slot) 35.18 35.40 35.40 60.23 60.47 59.55 Class 10 (2-slot) 35.15 35.45 35.43 60.07 61.02 59.77 Class 12 (4-slot) 35.16 35.32 35.36 60.09 59.62 59.35 Psat: Pin = 0 dBm; Vapc = 2.2V Pout (dBm) PAE (%)

1710 MHz

1750 MHz

1785 MHz

Class 8 (1-slot) 33.00 33.08 33.12 59.00 59.19 59.62 Class 10 (2-slot) 33.00 33.08 33.10 59.35 59.42 59.40 Class 12 (4-slot) 33.00 33.08 33.10 59.35 59.42 59.40 Psat: Pin = 0 dBm; Vapc = 2.2V Pout (dBm) PAE (%)

1850 MHz

1880 MHz

1910 MHz

Class 8 (1-slot) 33.10 33.10 33.02 59.14 58.93 58.66 Class 10 (2-slot) 33.10 33.10 33.02 59.14 58.93 58.66 Class 12 (4-slot) 33.10 33.04 32.96 58.75 58.50 58.25

No. Function

Description

3.5V nominal – output stage, bypass with 0.033 µF//220 pF[1] Gnd Gnd RFout EGSM EGSM Output 50Ω nominal, external d.c. blocking required – 33 pF Gnd Gnd Gnd RFout DCS/PCS DCS/PCS Output 50Ω nominal, external d.c. blocking required – 33 pF Gnd Gnd Vdd3 DCS/PCS DCS/PCS Supply 3rd stage 3.5V nominal – output stage, bypass with 0.033 µF//27 pF[1] Gnd Vapc DCS/PCS DCS/PCS Control voltage See datasheet Figure 5 (DCS) and Figure 6 (PCS) Gnd RFin DCS/PCS DCS/PCS Input +2 dBm GMSK, 50Ω nominal, internally d.c. blocked Gnd Vdd1,2 DCS/PCS DCS/PCS Supply 1st and 2nd stages 3.5V nominal – driver stages, bypass with 0.033 µF Vdd1,2 Bypass DCS/PCS 1st and 2nd stage bypassing bypass with 12 pF Gnd Vdd1,2 Bypass EGSM 1st and 2nd stage bypassing bypass with 220 pF Vdd1,2 EGSM EGSM Supply 1st and 2nd stages 3.5V nominal – driver stages, bypass with 0.033 µF Gnd RFin EGSM EGSM Input +2 dBm GMSK, 50Ω nominal, internally d.c. blocked Note: 1. In addition a 2.2 µF capacitor should be connected to pins 4 and 14 or alternatively star connections can be made from a single 2.2 µF capacitor keeping the connection distances as short as possible. EGSM RFout Vdd Vdd DCS/PCS RFin Vdd Agilent ACPM-7891 YYWW Vdd C11 DCS/PCS RFout C13 C14 EGSM RFin Component Label C11 C13 C14 Component Value .033 µF 12 pF 220 pF .033 µF 220 pF 33 pF .033 µF 33 pF .033 µF 27 pF Demo Board Schematic for PA Only

Ordering Information

No. of Devices Container ACPM-7891-BLK Bulk ACPM-7891-TR1 1000 13” Tape and Reel Package Dimensions 0.0352 (0.92) 0.0080 (0.20) Agilent ACPM-7891 YYWWDDLLLL 0.0000 (0.00) 0.0300 (0.76) 0.0430 (1.09) 0.1932 (4.91) 0.2792 (7.09) 0.4295 (10.91) 0.4644 (11.80) 0.0590 (1.50) 0.0000 (0.00) 0.2362 (6.00) 0.0382 (0.92) 0.0430 (1.09) 0.1932 (4.91) 0.2282 (5.80) 0.0582 (1.48) 0.0835 (2.12) 0.1307 (3.32) 0.1780 (4.52) 0.2062 (5.24) 0.0582 (1.48) 0.0835 (2.12) 0.1307 (3.32) 0.1780 (4.52) 0.2252 (5.72) 0.2725 (6.92) 0.3197 (8.12) 0.3670 (9.32) 0.4142 (10.52) 0.4424 (11.24) 0.4724 (12.00) Note: Measurements are in inches (millimeters). TOP VIEW END VIEW BOTTOM VIEW

Tape Dimensions and Device Orientation Agilent ACPM-7891 YYWWDDLLLL Notes: Drawing not to scale. Measurements are in millimeters (inches). 12.20 (0.476) 2.25 (0.088) 6.66 (0.260) DEVICE IN CARRIER TAPE CARRIER TAPE 12.00 (0.468) PIN 1 position (permanent) ACPM-7891 carrier tape ACPM-7891 in carrier tape ∅1.50 (∅0.059) USER FEED DIRECTION COVER TAPE CARRIER TAPE REEL

when evaluating the ACPM-7891. the DAC and timing functions. Table 1. EGSM Test Conditions. Table 2. DCS/PCS Test Conditions.

details its bill of materials. request from Linear Technology.

1800 MHz RF channel controlled

Figure 4. Block Diagram of the ACPM-7891 PA Control Board.

Figure 5. ACPM-7891 Control Board Layout. Table 3. Bill of Materials for ACPM-7891 Control Board.

20 Ways

Figure 6. Test Setup with the LT1758 Demoboard. Figure 7. Test Setup without the LT1758 Demoboard.

(With Linear Tech Board) Connect an RF signal generator with GMSK modulated signal to RFin EGSM port (RF2) or RFin DCS/PCS (RF1) on the PA con- trol board. The maximum input power at RF1 and RF2 is +10 dBm. Typically +2 dBm is applied for the EGSM, DCS/PCS channels. Connect two measure- ment instruments, one for spectrum analyzer and the other VSA, to RFout (RF6). The maxi- mum output power should be limited to +35 dBm. Connect the LTC-1758 demo board and the ACPM-7891 PA control board using 20 pin- connection socket. The external signal control board supplies bias voltage to PA control board and three timing signals — SHDN, TXEN and PCTL — to generate VPCA signal of the LTC1758. The VPCA signal is Power control volt- age output and drives VAPC voltage of ACPM-7891 to define power ramp profile. Figure C2 in Appendix C details the LTC1758 timing diagram. The RF power supply voltage of the PA control board is set by VBATT ADJ on the external signal control board. This voltage can be varied over a 2.7V to 5.3V range and is nominally set to 3.5V. The VBATT voltage can be monitored on TP5 on the PA control board. Linear Technologies supplies the application program associated with the .txt file to be down- loaded to the FLASH memory. The program controls the code level of the DAC, whose data range is –1V to +1V. –1V corre- sponds to the zero code level and the actual 10-bit DAC range is 0V to +2.048V. The resolution is set about 2mV per step. The first sample of the data file is assigned the “default” value, which is included 1251 sample waveform of input data. This is a “code” value for the Lab View application program. The first sample being the default value and the other 1250 samples being the waveform data to be outputted to the DAC. The default value will then be loaded into all memory locations after the 1250 samples have been loaded. After programming the flash 16k segments the system can be set to run by setting the rotary switch to the programmed memory segment and resetting the external signal control board using the reset switch. Test Setup II (Without Linear Tech Board) Without LTC1758 demo board, we can get the same test result as above test. In this case, the Agilent (HP) 3245A generates two relevant signals, TX_EN and RAMP with synchronized time. Connect an RF signal generator with GMSK modulated signal to RFin EGSM port (RF2) or RFin DCS/PCS (RF1) on the PA con- trol board. Typically +2 dBm is applied for the EGSM, DCS/PCS channels. Connect two measure- ment instruments, one for spectrum analyzer and the other VSA, to RFout (RF6). The maxi- mum output power should be limited to +35 dBm. Agilent (HP) E4406A: The Agilent E4406A, transmitter tester is used to measure power level in EGSM/DCS/PCS mode displaying the characteristic time mask. Agilent (HP) E4437B: The signal generator is used to provide GMSK GSM modulated input sig- nal at a defined frequency. Agilent (HP)8593E: The Agilent 8991A is a spectrum analyzer used to measure the output power of diplexer in the fre- quency and time domain. Tek 2235: The Tek 2235 is an oscilloscope used to monitor RAMP signal and Vapc con- nected using the test points of PA control board. Agilent (HP) 6623A: The Agilent 6623A, power supply is nomi- nally set to voltage 3.5V for Vdd. SHDN is set to 2.8V as high mode during TXEN and RAMP are enable. Agilent (HP) 3245A: The Agilent 3245A, function generator with two channels is set to two rel- evant signals based on the GSM specification. One signal gener- ates TX_EN with 2.7V that has a period of 4.615 ms with a duty cycle of 12.5% (577 µs) and 216 Hz frequency. This TX_EN connects to TX_EN (TP7) pin on the RF control board. The other signal is RAMP signal that is same as PCTL of LTC1758. This RAMP connects to RAMP (TP6) pin on the RF con- trol board.

shown in Table 4 were obtained. controller such as the LT1758. Table 4. Results with variable Vdd and three point frequency ranges

G Appendix A ACPM-7891 PA Control Board Layout Bottom GND Power Top

0.150 [3.82] 0.220 [5.59] 0.043 [1.09] 0.011 [0.26] 0.022 [0.56] 0.022 [0.56] 0.236 [6.00] 0.2317 [5.52] 0.189 [4.80] 0.142 [3.60] 0.236 [2.40] 0.047 [1.20] 0.000 [0.00] 0.000 [0.00] 0.024 [0.60] 0.071 [1.80] 0.099 [2.52] 0.118 [3.00] Figure B1. Recommended Stencil. Appendix B Stencil Design on PCB for ACPM-7891 In order to dissipate heat, addi- tional via holes on the PCB are needed on the printed circuit board. Solder mask should not be applied to thermal/ground plane underneath the vias in a way that will reduce heat transfer efficiency from conductive paddle to ambient. The stencil design enables solder paste to fill up the vias and form a solid conducting bar that further improves the thermal dissipation. A properly designed solder screen or stencil is required to ensure optimum amount of sol- der paste is deposited onto the PCB pads. The recommended stencil layout is shown in Figure B1. The stencil has a solder paste deposition opening approxi- mately 90% of the PCB pad. Reducing stencil opening of the conductive paddle potentially generate void underneath, on the other hand stencil opening larger than 100% will lead to excessive solder paste smear across the conductive paddle to adjacent I/O pads.

LTC1758 Theory of Operation The LTC1758-2 is a dual band RF power controller for RF power amplifiers operating in the 850 MHz to 2 GHz range. RF power is controlled by driv- ing the RF amplifier power control pins and sensing the resultant RF output power via a directional coupler. The RF sense voltage is peak detected using an on-chip Schottky diode. This detected voltage is com- pared to the DAC voltage at the PCTL pin to control the output power. The RF power amplifier is protected against high supply current and high power control pin voltages. Internal and exter- nal offsets are cancelled over temperature by an autozero con- trol loop, allowing accurate low power programming. The shut- down feature disables the part and reduces the supply current to <1_A. Modes of Operation The LTC1758-2 supports three operating modes: shutdown, autozero and enable. In shutdown mode (SHDN = Low) the part is disabled and supply currents will be reduced to <1_A. VPCA and VPCB will be connected to ground via 100_ switches. In autozero mode (SHDN = High, TXEN = Low) VPCA and VPCB will remain connected to ground and the part will be in the autozero mode. The part must remain in autozero for at least 50_s to allow for the autozero circuit to settle. In enable mode (SHDN = High, TXEN = High) the control loop and protection functions will be operational. When TXEN is switched high, acquisition will begin. The control amplifier will start to ramp the control voltage to the RF power amplifier. The RF amplifier will then start to turn on. The feedback signal from the directional coupler and the output power will be detected by the LTC1758-2 at the TOP VIEW RF SHDN BSEL GND TXEN PCTL VIN VCC VPCA VPCB 10-Lead Plastic MSOP Shutdown SHDN BSEL TXEN PCTL VPCA VPCB Start Voltage Start Voltage Note 1 Autozero Enable tS tS: autozero settling time, 50µs minimum t1: BSEL change prior to TXEN, 200ns typical t2: BSEL change after TXEN, 200ns typical Note 1: The external DAC driving the PCTL pin can be enabled during autozero. The autozero system will cancel the DAC transient. the DAC must be settled to an offset ≥ 400mv before TXEN is asserted high. MODE Shutdown Autozero Enable SHDN Low High High TXEN Low Low High OPERATION Disabled Autozero Power Control Figure C1. LTC-1758-2 Pinout. RF pin. The loop closes and the amplifier output tracks the DAC voltage ramping at PCTL. The RF power output will then follow the programmed power profile from the DAC. The LTC1758 datasheet provides more detailed description of the part’s operation and can be downloaded from Linear Technology’s website. Figure C2. LTC1758-2 Timing Diagram.

www.agilent.com/semiconductors For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (916) 788-6763 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6271 2451 India, Australia, New Zealand: (+65) 6271 2394 Japan: (+81 3) 3335-8152(Domestic/International), or 0120-61-1280(Domestic Only) Korea: (+65) 6271 2194 Malaysia, Singapore: (+65) 6271 2054 Taiwan: (+65) 6271 2654 Data subject to change. Copyright © 2003 Agilent Technologies, Inc. Obsoletes 5988-8926EN June 18, 2003 5988-9542EN