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LTC1406CGN Datasheet(PDF) 1 Page - Linear Technology |
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LTC1406CGN Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LTC1406 Low Power, 8-Bit, 20Msps, Sampling A/D Converter The LTC ®1406 is a 20Msps, 8-bit, sampling A/D converter which draws only 150mW from a single 5V supply. This easy-to-use device includes a high dynamic range sample- and-hold with a 250MHz bandwidth. The LTC1406’s full-scale input range is ±1V. The inputs can be driven differentially or one input can be tied to a fixed voltage and the other input driven with a ±1V bipolar input. Maximum DC specifications include ±1LSB DNL and INL over temperature. Outstanding AC performance includes 48.5dB S/(N + D) and 62dB THD with a 1MHz input; 47.5dB S/(N + D) and 59dB THD at the Nyquist input frequency of 10MHz. The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 250MHz bandwidth. The 60dB common mode rejection allows users to eliminate ground loops and common mode noise by measuring signals differentially from the source. The ADC has an 8-bit parallel output port with separate power supply and ground allowing easy interface to 3V digital systems. The pipelined architecture has five clock cycles of data latency. DESCRIPTION FEATURES s Low Power, 8-Bit, 20Msps ADC s 250MHz Internal Sample-and-Hold s 7 Effective Bits at 70MHz Input Frequency s ±1LSB DNL and INL Max s Single 5V Supply and 150mW Dissipation s Power Down to 1 µA s True Differential Inputs Reject Common Mode Noise s Accepts Single-Ended or Differential Input Signals s ±1V Differential or 2V Single-Ended Input Span s Analog Inputs Common Mode to VDD and GND s 24-Pin Narrow SSOP Package , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Low Power, 20MHz, 8-Bit Sampling ADC INPUT FREQUENCY (Hz) 2 4 6 100k 1M 10M 100M 1406 TA02 0 3 5 7 1 850 44 38 32 Effective Bits and Signal-to-Noise + Distortion vs Input Frequency APPLICATIONS s Telecommunications s Wireless Communications s Digital Cellular Telephones s CCDs and Image Scanners s Video Digitizing and Digital Television s Digital Color Copiers s High Speed Undersampling s Personal Computer Video s High Speed Data Acquisition TRACK-AND- HOLD AMP DIGITAL DATA 8-BIT PIPELINE ADC 2.5k AVDD VBIAS VREF OVDD DVDD OGND AGND AGND SHDN 1.95k 2.2V OUTPUT DRIVERS OF/UF D7 D6 D5 D4 D3 D2 D1 D0 1406 BD CLOCK CIRCUITRY CLK AIN + 7 8 94 10 3 5 6 1 23 2 11 12 22 21 20 19 18 17 16 15 24 AIN – DGND |
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