Datasheet LTM9003 (Analog Devices)

LTM9003 12-Bit Digital Pre-Distortion µModule Receiver Subsystem FeaTures DescripTion n
Fully Integrated Receiver Subsystem for Digital
The LTM®9003 is a 12-bit digital pre-distortion µModule®
Pre-Distortion Applications
receiver subsystem for the transmit path of cellular bases- n
Down-Converting Mixer with Wide RF Frequency
tations. Utilizing an integrated system in a package (SiP)
Range: 400MHz to 3.8GHz
technology, it includes a downconverting mixer, wideband n
125MHz Wide Bandpass Filter, <0.5dB Passband
filter and analog-to-digital converter (ADC). The system
Ripple
is tuned for an intermediate frequency (IF) of 184MHz n
Low Power ADC with Up to 12-Bit Resolution,
and a signal bandwidth of up to 125MHz. The 12-bit ADC
250Msps Sample Rate
samples at rates up to 250Msps. Contact Linear Technol- n
–145.5dBm/Hz Input Noise Floor, 25.6dBm IIP3
ogy regarding customization. n 1.5W Total Power Consumption The high signal level downconverting active mixer is opti- n 50Ω Single-Ended RF and LO Ports mized for high linearity, wide dynamic range IF sampling n Internal Bypass Capacitance, No External applications. It includes a differential LO buffer amplifier Components driving a double-balanced mixer. Broadband, integrated n ADC Clock Duty Cycle Stabilizer transformers on the RF and LO inputs provide single n 11.25mm × 15mm LGA package ended 50Ω interfaces. The RF and LO inputs are internally matched to 50Ω from 1.1GHz to 1.8GHz. applicaTions The CLK input controls converter operation and may be n Transmit Observation Path Receivers driven differential y or single-ended. An optional clock duty n Digital Pre-Distortion (DPD) Receivers cycle stabilizer allows high performance at full speed for n Wideband Receiver a wide range of clock duty cycles. n Wideband Instrumentation L, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131. Typical applicaTion
FFT of 4-Channel WCDMA Input at 2.14GHz
–40 PA 3.3V –50 2.5V –60 LTM9003 OVDD = 2.5V –70 D11 –80 • AMPLITUDE (dB) • LVDS –90 RF • D0 –100 DGND LO ENC– ENC+ GND –110154 164 174 184 194 204 214 9003 TA01 IF FREQUENCY (MHz) 9003 TA01b 9003f Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Filter Characteristics Dynamic Accuracy Digital Inputs and Outputs Power Requirements Timing Characteristics Timing Diagram Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Related Parts