LTC1603 High Speed, 16-Bit, 250ksps Sampling A/D Converter with Shutdown FEATURES DESCRIPTIO n A Complete, 250ksps 16-Bit ADC The LTC 1603 is a 250ksps, 16-bit sampling A/D con- n 90dB S/(N+D) and 100dB THD (Typ) verter that draws only 220mW from 5V supplies. This n Power Dissipation: 220mW (Typ) high performance device includes a high dynamic range n Nap (7mW) and Sleep (10m W) Shutdown Modes sample-and-hold, a precision reference and a high speed n No Pipeline Delay parallel output. Two digitally selectable power shutdown n No Missing Codes over Temperature modes provide power savings for low power systems. n Operates with Internal 15ppm/ C Reference The LTC1603s full-scale input range is 2.5V. Outstand- or External Reference ing AC performance includes 90dB S/(N+D) and 100dB n True Differential Inputs Reject Common Mode Noise THD at a sample rate of 250ksps. n 5MHz Full Power Bandwidth n The unique differential input sample-and-hold can acquire 2.5V Bipolar Input Range n single-ended or differential input signals up to its 15MHz Pin Compatible with LTC1604 and LTC1608 n bandwidth. The 68dB common mode rejection allows 36-Pin SSOP Package users to eliminate ground loops and common mode noise U by measuring signals differentially from the source. APPLICATIO S The ADC has m P compatible,16-bit parallel output port. n Telecommunications There is no pipeline delay in conversion results. A separate n Digital Signal Processing convert start input and a data ready signal (BUSY) ease n Multiplexed Data Acquisition Systems connections to FlFOs, DSPs and microprocessors. n High Speed Data Acquisition , LTC and LT are registered trademarks of Linear Technology Corporation. n Spectrum Analysis n Imaging Systems TYPICAL APPLICATIO 2.2F 10F 5V 10F 5V 10F 10 + + 3 36 35 9 10 V AV AV DV DGND REF DD DD DD SHDN 33 CS 32 CONTROL P LOGIC CONVST 31 CONTROL REFCOMP 7.5k AND 4 2.5V RD 30 LINES 1.75X TIMING REF + 4.375V BUSY 27 47F OV DD 29 5V OR 3V 10F 28 + OGND 1 A IN DIFFERENTIAL 16-BIT OUTPUT B15 TO B0 ANALOG INPUT 16-BIT SAMPLING BUFFERS 2 A IN D15 TO D0 PARALLEL 2.5V ADC BUS 11 TO 26 AGND AGND AGND AGND V SS 1603 TA01 5 6 7 8 34 10F + 5V 1603f 1 + + + U ULTC1603 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION AV = DV = OV = V (Notes 1, 2) DD DD DD DD ORDER TOP VIEW + Supply Voltage (V ) ................................................ 6V A 1 36 AV PART NUMBER DD IN DD A 2 35 AV IN DD Negative Supply Voltage (V ) ............................... 6V SS V 3 34 V REF SS Total Supply Voltage (V to V ) .......................... 12V LTC1603CG DD SS REFCOMP 4 33 SHDN AGND 5 32 CS Analog Input Voltage LTC1603IG AGND 6 31 CONV (Note 3) ......................... (V 0.3V) to (V + 0.3V) SS DD AGND 7 30 RD V Voltage (Note 4) ................. 0.3V to (V + 0.3V) AGND 8 29 OV REF DD DD DV 9 28 OGND DD REFCOMP Voltage (Note 4) ......... 0.3V to (V + 0.3V) DD 10 27 DGND BUSY Digital Input Voltage (Note 4) ....................0.3V to 10V D15 (MSB) 11 26 D0 D14 12 25 D1 Digital Output Voltage .................. 0.3V to (V + 0.3V) DD D13 13 24 D2 Power Dissipation............................................. 500mW D12 14 23 D3 Operating Temperature Range D11 15 22 D4 D10 16 21 D5 LTC1603C .............................................. 0 C to 70 C D9 17 20 D6 LTC1603I............................................ 40 C to 85 C D8 18 19 D7 Storage Temperature Range ................ 65 C to 150 C G PACKAGE 36-LEAD PLASTIC SSOP Lead Temperature (Soldering, 10 sec)................. 300 C T = 125 C, q = 95 C/W JMAX JA Consult LTC Marketing for parts specified with wider operating temperature ranges. CO VERTER The l denotes the specifications which apply over the full operating CCHARA TERISTICS temperature range, otherwise specifications are at T = 25 C. With Internal Reference (Notes 5, 6) A PARAMETER CONDITIONS MIN TYP MAX UNITS Resolution (No Missing Codes) l 16 16 Bits Integral Linearity Error (Note 7) l 1 3 LSB Transition Noise (Note 8) 0.7 LSB Offset Error (Note 9) l 0.05 0.125 % Offset Tempco (Note 9) 0.5 ppm/ C Full-Scale Error Internal Reference 0.125 0.25 % External Reference 0.25 % Full-Scale Tempco I (Reference) = 0, Internal Reference 15 ppm/ C OUT The l denotes the specifications which apply over the full operating temperature range, otherwise A ALOG I PUT specifications are at T = 25 C. A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Analog Input Range (Note 2) 4.75 V 5.25V, 5.25 V 4.75V, 2.5 V IN DD SS + V (A , A ) AV SS IN IN DD I Analog Input Leakage Current CS = High l 1 m A IN C Analog Input Capacitance Between Conversions 43 pF IN During Conversions 5 pF t Sample-and-Hold Acquisition Time 380 ns ACQ t Sample-and-Hold Acquisition Delay Time 1.5 ns AP t Sample-and-Hold Acquisition Delay Time Jitter 5 ps jitter RMS + CMRR Analog Input Common Mode Rejection Ratio 2.5V < (A = A ) < 2.5V 68 dB IN IN 1603f 2 U U U U W U W U WW