AD6122ACPRL AD [Analog Devices], AD6122ACPRL Datasheet
AD6122ACPRL
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AD6122ACPRL Summary of contents
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FEATURES Fully Compliant with IS98A and PCS Specifications Linear IF Amplifier – +34 dB Linear-in-dB Gain Control Temperature-Compensated Gain Control Quadrature Modulator Modulates IFs from 50 MHz to 350 MHz Integral Low Dropout Regulator Accepts 2.9 V ...
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AD6122–SPECIFICATIONS noted) NOTE: All powers shown in dBm are referred Specification MODULATOR Output Level Output Third Order Harmonic I/Q Inputs Differential Input Voltage Bandwidth Resistance Quadrature Accuracy Amplitude Balance Output Referred Noise Modulator Common-Mode Reference LO ...
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... Model AD6122ARS AD6122ARSRL AD6122ACP AD6122ACPRL CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD6122 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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AD6122 SSOP LPCC Pin # Pin # Pin Label 1 30 PD1 2 31 PD2 3 32 LDOE 4 1 LDOB 5 2 LDOC LDOGND 7 5 DGND 8 6 LOIPP 9 7 LOIPN 10 8 DVCC ...
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Test Figures MUST BE EQUAL LENGTHS MODCMREF I DATA 50 MODCMREF MUST BE EQUAL LENGTHS MODCMREF Q DATA 50 MODCMREF Figure 1. Quadrature Modulator’s Characterization Input and Output Impedance Matches REV. B 0.1 F +15V ...
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AD6122 RF SOURCE Figure 2. IF Amplifier’s Characterization Input and Output Impedance Matches NOTE: RF CABLES FOR I AND Q PATHS MUST BE OF EQUAL LENGTH TEKTRONIX 500mVp-p DIFFERENTIAL AFG2002 R&S SMT03 RF RF SOURCE 1 R&S SMT03 RF RF ...
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REACTIVE NOISE CONJUGATE SOURCE MATCH HP8116A ROHDE & SCHWARZ FUNCTION GEN. SMT03 4 kHz, 0.5V TO 2.5V 100MHz, –30dBm SQ. WAVE AGC IFIN IFOUT AD6122 TEST BED a. Response Time from Gain Control to IF Output REV. B VREG OUT ...
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Performance Characteristics AD6122 RBW REF LEV VBW SWT –40dBm –40 1 –50 –60 –70 –80 –90 –100 –110 CL1 –120 –130 –140 CENTER 130.38MHz 519kHz/DIV Figure 6. Spectral Plot at Modulator Outputs: ACPR –35 –40 –45 –50 50 100 ...
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T = – – + –40 – + –80 0.5 1.0 1.5 VGAIN – V Figure 12. IF Amplifier Response Curve: Gain vs. = –40 ° C, ...
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AD6122 40 20 VGAIN = 2.0V 0 –20 –40 VGAIN = 1.0V –60 VGAIN = 0.5V –80 50 100 150 200 FREQUENCY – MHz Figure 18. IF Amplifier Gain vs. Frequency for VGAIN = 2.5 V, 2.0 V, 1.5 V, ...
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QUADRATURE MODULATOR I INPUT LOCAL OSCILLATOR 2 INPUT Q INPUT COMMON-MODE REFERENCE OUTPUT VPOS DROPOUT REGULATOR POWER- DOWN 1 THEORY OF OPERATION The CDMA Transmitter IF Subsystem (Figure 21) consists and Q modulator with a divide-by-two quadrature ...
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AD6122 The AD6122’s overall gain, expressed in decibels, is linear in dB with respect to the automatic gain control (AGC) voltage, VGAIN. Either REFOUT or an external reference voltage con- nected to REFIN may be used to set the voltage ...
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AD6122 LDOE FROM EXTERNAL LDOB VOLTAGE REGULATOR LDOC Figure 26. Configuration for Bypassing the Low Dropout Regulator ROOFING FILTER Because the outputs of the AD6122 modulator are open collec- tor, the parasitic capacitances seen at the output of the modula- ...
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AD6122 R1 IFINP MODOPP MODOPN IFINN Figure 28. Pad Topology 1 log + ...
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INPUT INTERFACES The AD6122 interfaces to CDMA baseband converters provid- ing either IF or baseband outputs. The baseband input is pro- vided by direct connection of the baseband converter’s baseband output to the baseband input of the AD6122 (Figure 30). ...
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AD6122 AD6122 Evaluation Board The AD6122 Evaluation Board consists of an AD6122, I/O con- nectors, a 20-pin dual header, 2-pin headers and four AD830 high speed video difference amplifiers. It allows the user to evaluate the AD6122’s IF amplifier and ...
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Table III describes the high frequency signal connectors on the AD6122 customer sample boards. Table III. Evaluation Board SMA Signal Connector Description Connector Description I Modulator Input. 250 mV p-p into 50 Ω termination, dc coupled. The level ...
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AD6122 J2 0 FMMT4403CT-ND VPOS 2.9V – 4.2V J1 VREG OUT C1 X2 10nF 0 LOIPP VCC X1 X3 C24 0 100nH 10nF 0 1:8 TXOP X6 3pF X10 C4 0 10nF ...
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V– MODCMREF V–1 4 –15V ICH R6 50 +15V 1 V– MODCMREF V–1 4 –15V TO TXVCC C6 18pF TO DVCC C5 18pF TO IFVCC C7 18pF NOTES USE THE LDO REGULATOR, ...
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AD6122 0.078 (1.98) 0.068 (1.73) 0.008 (0.203) 0.002 (0.050) 0.010 (0.25) REF OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 28-Lead SSOP (RS-28) 0.407 (10.34) 0.397 (10.08 0.07 (1.79) PIN 1 0.066 (1.67) 8° 0.0256 0.015 ...
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