Datasheet LTM2173-14 (Analog Devices)

LTM2173-14 14-Bit, 80Msps Low Power Quad ADC
FEATURES DESCRIPTION
n
4-Channel Simultaneous Sampling ADC
The LTM®2173-14 is a 4-channel, simultaneous sam- n
73dB SNR
pling 14-bit A/D converter designed for digitizing high n
88dB SFDR
frequency, wide dynamic range signals. AC performance n Low Power: 96mW per Channel includes 73dB SNR and 88dB spurious free dynamic range n Single 1.8V Supply (SFDR). Low power consumption per channel reduces n Serial LVDS Outputs: 1 or 2 Bits per Channel heat in high channel count applications. Integrated bypass n Selectable Input Ranges: 1V capacitance and flow-through pinout reduces overal P-P to 2VP-P n 800MHz Full Power Bandwidth S/H board space requirements. n Shutdown and Nap Modes DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) n Serial SPI Port for Configuration and no missing codes over temperature. The transition n Internal Bypass Capacitance, No External noise is a low 1.2LSBRMS. Components n The digital outputs are serial LVDS to minimize the num- 140-Pin (11.25mm × 9mm) BGA Package ber of data lines. Each channel outputs two bits at a time
APPLICATIONS
(2-lane mode). At lower sampling rates there is a one bit per channel option (1-lane mode). n Automotive n The ENC+ and ENC– inputs may be driven differentially Communications n or single-ended with a sine wave, PECL, LVDS, TTL, or Cellular Base Stations n CMOS inputs. An internal clock duty cycle stabilizer al- Software Defined Radios n lows high performance at full speed for a wide range of Portable Medical Imaging n clock duty cycles. Multichannel Data Acquisition n Nondestructive Testing All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
1.8V 1.8V
LTM2173-14, 80Msps,
VDD OVDD
2-Tone FFT, fIN = 70MHz and 75MHz
CHANNEL 1 14-BIT OUT1A 0 ANALOG S/H ADC CORE INPUT OUT1B –10 –20 CHANNEL 2 14-BIT OUT2A –30 ANALOG S/H ADC CORE INPUT OUT2B –40 DATA SERIALIZED –50 SERIALIZER LVDS • • • • • • • • • • • • –60 OUTPUTS –70 CHANNEL 4 OUT4A 14-BIT ANALOG S/H ADC CORE AMPLITUDE (dBFS) –80 OUT4B INPUT –90 DATA –100 CLOCK ENCODE PLL OUT –110 INPUT –120 FRAME 0 10 20 30 40 FREQUENCY (MHz) 217314 TA01b GND GND 217314 TA01 Rev. A Document Feedback For more information www.analog.com 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Outputs Power Requirements Timing Characteristics Timing Diagrams Pin Functions Pin Configuration Table Functional Block Diagram Applications Information Package Description Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Converter Characteristics Analog Input Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Outputs Power Requirements Timing Characteristics Timing Diagrams Typical Performance Characteristics Pin Functions Pin Configuration Table Functional Block Diagram Applications Information Converter Operation Analog Input Input Drive Circuits Digital Outputs Data Format Device Programming Modes Grounding and Bypassing Heat Transfer Package Description Revision History Typical Application Related Parts