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TSA1204IFT-E Datasheet(PDF) 1 Page - STMicroelectronics |
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TSA1204IFT-E Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 31 page  December 2006 Rev 4 1/31 31 TSA1204 Dual channel 12-bit 20Msps 120mW A/D converter Features ■ 0.5 Msps to 20 Msps sampling frequency ■ Adaptive power consumption: 120 mW @ 20 Msps, 95 mW@10 Msps ■ Single supply voltage: 2.5 V ■ Independent supply for CMOS output stage with 2.5 V/3.3 V capability ■ ENOB=11.2 @ Nyquist ■ SFDR= -81.5 dBc @ Nyquist ■ 1GHz analog bandwidth track-and-hold ■ Common clocking between channels ■ Dual simultaneous sample and hold inputs ■ Multiplexed outputs ■ Built-in reference voltage with external bias capability. Description The TSA1204 is a new generation of high speed, dual-channel analog-to-digital converters implemented in a mainstream 0.25 µm CMOS technology yielding high performance and very low power consumption. The TSA1204 is specifically designed for applications requiring very low noise floor, high SFDR and good insulation between channels. It is based on a pipeline structure and digital error correction to provide excellent static linearity and over 11.2 effective bits at FS=20 Msps, and Fin=10 MHz. For each channel, an integrated voltage reference simplifies the design and minimizes external components. It is nevertheless possible to use the circuit with external references. The ADC outputs are multiplexed in a common bus with a small number of pins. A tri-state capability is available for the outputs, allowing chip selection. The inputs of the ADC must be differentially driven. The TSA1204 is available in extended (-40° C to +85° C) temperature range, in a small 48-pin TQFP package. Applications ■ Medical imaging and ultrasound ■ 3G base station ■ I/Q signal processing applications ■ High speed data acquisition system ■ Portable instrumentation D5 D6 D7 D8 D9 D10 D11(MSB) AVCCB index corner 1 2 3 4 5 6 7 8 9 10 11 32 31 30 29 28 27 26 13 14 15 16 17 18 19 20 21 22 47 25 33 12 23 24 35 34 36 48 44 43 42 41 40 39 38 37 46 45 TSA1204 VCCBE GNDBE AGND INI AGND AGND IPOL AGND AGND INBQ INIB AGND INQ D2 D3 D4 7x7mm TQFP48 www.st.com |
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