LTC1603 High Speed, 16-Bit, 250ksps Sampling A/D Converter with Shutdown UFEATURESDESCRIPTIO ■ A Complete, 250ksps 16-Bit ADC The LTC®1603 is a 250ksps, 16-bit sampling A/D con- ■ 90dB S/(N+D) and –100dB THD (Typ) verter that draws only 220mW from ±5V supplies. This ■ Power Dissipation: 220mW (Typ) high performance device includes a high dynamic range ■ Nap (7mW) and Sleep (10 µ W) Shutdown Modes sample-and-hold, a precision reference and a high speed ■ No Pipeline Delay parallel output. Two digitally selectable power shutdown ■ No Missing Codes over Temperature modes provide power savings for low power systems. ■ Operates with Internal 15ppm/°C Reference The LTC1603’s full-scale input range is ± 2.5V. Outstand- or External Reference ing AC performance includes 90dB S/(N+D) and – 100dB ■ True Differential Inputs Reject Common Mode Noise THD at a sample rate of 250ksps. ■ 5MHz Full Power Bandwidth ■ The unique differential input sample-and-hold can acquire ±2.5V Bipolar Input Range ■ Pin Compatible with LTC1604 and LTC1608 single-ended or differential input signals up to its 15MHz ■ 36-Pin SSOP Package bandwidth. The 68dB common mode rejection allows users to eliminate ground loops and common mode noise U by measuring signals differentially from the source. APPLICATIO S The ADC has µP compatible,16-bit parallel output port. ■ Telecommunications There is no pipeline delay in conversion results. A separate ■ Digital Signal Processing convert start input and a data ready signal (BUSY) ease ■ Multiplexed Data Acquisition Systems connections to FlFOs, DSPs and microprocessors. ■ High Speed Data Acquisition , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Spectrum Analysis ■ Imaging Systems UTYPICAL APPLICATIO 2.2µF 10µF 5V 10µF 5V 10µF 10Ω + + + 3 36 35 9 10 V AV REF DD AVDD DVDD DGND SHDN 33 CS 32 CONTROL µP LOGIC CONVST 31 REFCOMP CONTROL 4 7.5k AND 2.5V RD 30 1.75X LINES TIMING + 4.375V REF BUSY 27 47µF OVDD 29 5V OR + 3V 10µF + OGND 28 1 AIN + DIFFERENTIAL 16-BIT OUTPUT ANALOG INPUT B15 TO B0 – SAMPLING 16-BIT ± BUFFERS 2.5V 2 AIN ADC – D15 TO D0 PARALLEL BUS 11 TO 26 AGND AGND AGND AGND VSS 1603 TA01 5 6 7 8 34 10µF + –5V 1603f 1
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