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LTC1273ACN Datasheet(PDF) 1 Page - Linear Technology |
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LTC1273ACN Datasheet(HTML) 1 Page - Linear Technology |
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1 / 24 page  1 LTC1273 LTC1275/LTC1276 S FEATURE DESCRIPTIO s Single Supply 5V or ±5V Operation s 300ksps Sample Rate s 75mW (Typ) Power Dissipation s On-Chip 25ppm/ °C Reference s Internal Synchronized Clock; No Clock Required s High Impedance Analog Input s 70dB S/(N + D) and 77dB THD at Nyquist s ±1/2LSB INL and ±3/4LSB DNL Max (A Grade) s ESD Protected On All Pins s 24-Pin Narrow DIP and SOL Packages s Variety of Input Ranges: 0V to 5V (LTC1273) ±2.5V (LTC1275) ±5V (LTC1276) Effective Bits and Signal to (Noise + Distortion) vs Input Frequency LTBiCMOSTM is a trademark of Linear Technology Corporation 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 AIN VREF AGND D11 D10 D9 D8 D7 D6 D5 D4 DGND VDD NC BUSY CS RD HBEN NC NC D0/8 D1/9 D2/10 D3/11 LTC1273 + 0.1 µF 10 µF 2.42V VREF OUTPUT ANALOG INPUT (0V TO 5V) + 10 µF 0.1 µF 5V 8- OR 12-BIT PARALLEL BUS µP CONTROL LINES LTC1273/75/76 • TA01 INPUT FREQUENCY (Hz) 10k 0 3 5 7 10 100k 2M LTC1273/75/76 • TA02 1 4 6 9 12 11 8 2 1M 62 56 74 68 50 fSAMPLE = 300kHz NYQUIST FREQUENCY S APPLICATI s High Speed Data Acquisition s Digital Signal Processing s Multiplexed Data Acquisition Systems s Audio and Telecom Processing s Spectrum Analysis The LTC1273/LTC1275/LTC1276 are 300ksps, sampling 12-bit A/D converters that draw only 75mW from single 5V or ±5V supplies. These easy-to-use devices come complete with 600ns sample-and-holds, precision refer- ences and internally trimmed clocks. Unipolar and bipo- lar conversion modes provide flexibility for various appli- cations. They are built with LTBiCMOS TM switched ca- pacitor technology. These devices have 25ppm/ °C (max) internal references. The LTC1273 converts 0V to 5V unipolar inputs from a single 5V supply. The LTC1275/LTC1276 convert ±2.5V and ±5V respectively from ±5V supplies. Maximum DC specifications include ±1/2LSB INL, ±3/4LSB DNL and 25ppm/ °C full scale drift over temperature. Outstanding AC performance includes 70dB S/(N + D) and 77dB THD at the Nyquist input frequency of 150kHz. The internal clock is trimmed for 2.7 µs maximum conver- sion time. The clock automatically synchronizes to each sample command eliminating problems with asynchro- nous clock noise found in competitive devices. A high speed parallel interface eases connections to FIFOs, DSPs and microprocessors. 12-Bit, 300ksps Sampling A/D Converters with Reference APPLICATI TYPICAL Single 5V Supply, 300ksps, 12-Bit Sampling A/D Converter |
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