AD6122ARS Analog Devices, AD6122ARS Datasheet
AD6122ARS
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AD6122ARS Summary of contents
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... REFERENCE OUTPUT VPOS REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices 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 Analog Devices. ...
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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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... TXVCC 13 IFGND 14 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 ...
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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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AD6122 –Typical Performance Characteristics RBW VBW REF LEV –40dBm SWT –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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... The IF amplifiers provide linear in dB gain control range. The input stage uses a differential, continuously variable attenuator based on Analog Devices’ patented X-AMP™ topol- ogy. This low noise attenuator consists of a differential R-2R ladder network, linear interpolator and a fixed gain amplifier. ...
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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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... The value of inductor required will be a function of the IF fre- quency at which we are operating. The values of inductors used during characterization at Analog Devices are shown in Table II. Because the exact value will also be a function of printed circuit board layout, we will have to vary the value from those in Table II to those required for our board ...
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AD6122 R1 IFINP MODOPP IFINN MODOPN 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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... PD2, the modulator powers down. Note that the IF amplifiers and modulator are powered down unless the pins on the two pin headers, PD1 and PD2, are short circuited. The IF input port impedance match used during characteriza- tion of the AD6122 at Analog Devices is as follows: 50 383 1:8 ...
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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 X4 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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