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LTC2202 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2202 Datasheet(HTML) 1 Page - Linear Technology |
1 / 24 page 1 2271f LTC2271 APPLICATIONS n Low Power Instrumentation n Software-Defined Radios n Portable Medical Imaging n Multi-Channel Data Acquisition TYPICAL APPLICATION DESCRIPTION 16-Bit, 20Msps Serial Low Noise Dual ADC The LTC ®2271 is a 2-channel, simultaneous sampling 16-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 84.1dB SNR and 99dB spurious free dynamic range (SFDR). DC specs include ±1LSB INL (typ), ±0.2LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.44LSBRMS. To minimize the number of data lines the digital outputs are serial LVDS. Each channel outputs one bit, two bits or four bits at a time. The LVDS drivers have optional internal termination and adjustable output levels to ensure clean signal integrity. The ENC+ and ENC– inputs may be driven differentially or single ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An internal clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles. FEATURES n 2-Channel Simultaneous Sampling ADC n Serial LVDS Outputs: 1, 2 or 4 Bits per Channel n 84.1dB SNR (46μVRMS Input Referred Noise) n 99dB SFDR n Low Power: 185mW Total n 92mW per Channel n Single 1.8V Supply n Selectable Input Ranges: 1VP-P to 2.1VP-P n 200MHz Full-Power Bandwidth S/H n Shutdown and Nap Modes n Serial SPI Port for Configuration n Pin Compatible With LTC2190: 16-Bit, 25Msps, 104mW n 52-Lead (7mm × 8mm) QFN Package 16-BIT ADC CORE CH1 ANALOG INPUT CH2 ANALOG INPUT ENCODE INPUT S/H 16-BIT ADC CORE OUT1A OUT1B OUT1C OUT1D OUT2A OUT2B OUT2C OUT2D DATA CLOCK OUT FRAME S/H DATA SERIALIZER PLL OGND 2271 TA01 SERIALIZED LVDS OUTPUTS GND VDD OVDD 1.8V 1.8V L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Integral Non-Linearity (INL) OUTPUT CODE 0 –2.0 –1.5 –1.0 –0.5 0.5 0.0 1.0 1.5 2.0 16384 32768 49152 65536 2271 TA02 |
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