SIGNAL/(NOISE + DISTORTION) (dB) LTC1419 14-Bit, 800ksps Sampling A/D Converter with Shutdown FEATURES DESCRIPTIO Sample Rate: 800ksps The LTC 1419 is a 1s, 800ksps, 14-bit sampling Power Dissipation: 150mW A/D converter that draws only 150mW from 5V supplies. 81.5dB S/(N + D) and 93dB THD This easy-to-use device includes a high dynamic range No Missing Codes sample-and-hold and a precision reference. Two digitally No Pipeline Delay selectable power shutdown modes provide flexibility for Nap and Sleep Shutdown Modes low power systems. Operates with 2.5V Internal 15ppm/C The LTC1419 has a full-scale input range of 2.5V. Out- Reference or External Reference standing AC performance includes 81.5dB S/(N + D) and True Differential Inputs Reject Common Mode Noise 93dB THD with a 100kHz input 80dB S/(N + D) and 86dB 20MHz Full-Power Bandwidth Sampling THD at the Nyquist input frequency of 400kHz. Bipolar Input Range: 2.5V The unique differential input sample-and-hold can acquire 28-Pin SSOP and SO Packages single-ended or differential input signals up to its 20MHz U bandwidth. The 60dB common mode rejection allows APPLICATIO S users to eliminate ground loops and common mode noise by measuring signals differentially from the source. Telecommunications Digital Signal Processing The ADC has a P compatible, 14-bit parallel output port. Multiplexed Data Acquisition Systems There is no pipeline delay in the conversion results. A High Speed Data Acquisition separate convert start input and data ready signal (BUSY) Spectrum Analysis ease connections to FIFOs, DSPs and microprocessors. Imaging Systems , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5581252. TYPICAL APPLICATIO Effective Bits and Signal-to-(Noise + Distortion) 800kHz, 14-Bit Sampling A/D Converter vs Input Frequency LTC1419 5V DIFFERENTIAL 1 28 14 86 ANALOG INPUT +A AV IN DD 2 27 (2.5V TO 2.5V) 13 80 5V A DV V IN DD REF 3 26 10F 12 74 OUTPUT V V REF SS 4 25 2.50V 10F 11 68 REFCOMP BUSY 5 24 10 62 10F AGND CS 1F 6 23 P CONTROL 9 D13(MSB) CONVST LINES 7 22 8 D12 RD 8 21 7 D11 SHDN 9 20 6 D10 D0 10 19 5 D9 D1 14-BIT 11 18 4 D8 D2 PARALLEL 12 17 3 BUS D7 D3 f = 800kHz SAMPLE 13 16 2 D6 D4 1k 10k 100k 1M 2M 14 15 DGND D5 INPUT FREQUENCY (Hz) 1419 TA02 1419 TA01 1419fb 1 EFFECTIVE BITS U ULTC1419 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO AV = V = DV (Notes 1, 2) DD DD DD TOP VIEW ORDER Supply Voltage (V ) ................................................ 6V DD +A 1 28 AV IN DD PART NUMBER 2 Negative Supply Voltage (V ) ............................... 6V A 27 DV IN DD SS V 3 26 V REF SS Total Supply Voltage (V to V ) .......................... 12V LTC1419ACG DD SS REFCOMP 4 25 BUSY Analog Input Voltage LTC1419ACSW AGND 5 24 CS (Note 3).............................(V 0.3V) to (V + 0.3V) SS DD D13(MSB) 6 23 CONVST LTC1419AIG D12 7 22 RD Digital Input Voltage (Note 4) ......... (V 0.3V) to 10V LTC1419AISW SS D11 8 21 SHDN Digital Output Voltage ........ (V 0.3V) to (V + 0.3V) LTC1419CG SS DD D10 9 20 D0 Power Dissipation............................................. 500mW LTC1419CSW D9 10 19 D1 Operating Temperature Range D8 11 18 D2 LTC1419IG D7 12 17 D3 LTC1419C .............................................. 0C to 70C LTC1419ISW D6 13 16 D4 LTC1419I........................................... 40C to 85C DGND 14 15 D5 Storage Temperature Range ................ 65C to 150C G PACKAGE SW PACKAGE Lead Temperature (Soldering, 10 sec)................. 300C 28-LEAD PLASTIC SSOP 28-LEAD PLASTIC SO T = 125C, = 95C/W (G) JMAX JA T = 125C, = 130C/W (SW) JMAX JA Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: