Datasheet AD8352 (Analog Devices)

2 GHz, Ultralow Distortion, Differential RF/IF Amplifier Data Sheet AD8352 FEATURES FUNCTIONAL BLOCK DIAGRAM −3 dB bandwidth of 2.2 GHz (AV = +10 dB) VCM Single resistor gain adjust: 3 dB ≤ A ENB BIAS CELL V ≤ 25 dB VCC Single resistor and capacitor distortion adjust RGP Input resistance: 3 kΩ, independent of gain (AV) Differential or single-ended input to differential output RDP Low noise input stage: 2.7 nV/√Hz RTI at AV = 10 dB + VOP Low broadband distortion VIP CD R R 10 MHz: −86 dBc HD2, −82 dBc HD3 G D VIN 70 MHz: −84 dBc HD2, −82 dBc HD3 – VON 190 MHz: −81 dBc HD2, −87 dBc HD3 RDN OIP3 of 41 dBm at 150 MHz Slew rate: 8 V/ns GND RGN
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Fast settling and overdrive recovery of <2 ns AD8352
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Single-supply operation: 3 V to 5.5 V
Figure 1.
Low power dissipation: 37 mA typical at 5 V Power-down capability: 5 mA at 5 V Fabricated using the high speed XFCB3 SiGe process APPLICATIONS Differential ADC drivers Single-ended-to-differential conversion RF/IF gain blocks SAW filter interfacing GENERAL DESCRIPTION
The AD8352 is a high performance differential amplifier 3 mm × 3 mm, 16-lead LFCSP and operates over a temperature optimized for RF and IF applications. It achieves better than range of −40°C to +85°C. 80 dB SFDR performance at frequencies up to 200 MHz, and
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65 dB beyond 500 MHz, making it an ideal driver for high
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speed 12-bit to 16-bit analog-to-digital converters (ADCs). Unlike other wideband differential amplifiers, the AD8352 has
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buffers that isolate the gain setting resistor (RG) from the signal
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inputs. As a result, the AD8352 maintains a constant 3 kΩ input
m Bc) B d –80 36 d
resistance for gains of 3 dB to 25 dB, easing matching and input
3 ( HD3 ( IP
drive requirements. The AD8352 has a nominal 100 Ω differential
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output resistance.
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The device is optimized for wideband, low distortion performance at frequencies beyond 500 MHz. These attributes, together with
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its wide gain adjust capability, make this device the amplifier of
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choice for general-purpose IF and broadband applications
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FREQUENCY (MHz)
where low distortion, noise, and power are critical. It is ideally 057 Figure 2. Third Harmonic Distortion (HD3) and IP3 vs. suited for driving not only ADCs but also mixers, pin diode Frequency, Measured Differentially attenuators, surface acoustic wave (SAW) filters, and multi- element discrete devices. The device is available in a compact
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS NOISE DISTORTION SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS APPLICATIONS INFORMATION GAIN AND DISTORTION ADJUSTMENT (DIFFERENTIAL INPUT) SINGLE-ENDED INPUT OPERATION NARROW-BAND, THIRD-ORDER INTERMODULATION CANCELLATION HIGH PERFORMANCE ADC DRIVING LAYOUT AND TRANSMISSION LINE EFFECTS EVALUATION BOARD EVALUATION BOARD LOADING SCHEMES SOLDERING INFORMATION EVALUATION BOARD SCHEMATICS OUTLINE DIMENSIONS ORDERING GUIDE