LTC1604 High Speed, 16-Bit, 333ksps Sampling A/D Converter with Shutdown FEATURESDESCRIPTION n A Complete, 333ksps 16-Bit ADC The LTC®1604 is a 333ksps, 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 No Pipeline Delay sample-and-hold, a precision reference and a high speed n No Missing Codes over Temperature parallel output. Two digitally selectable power shutdown n Nap (7mW) and Sleep (10μW) Shutdown Modes modes provide power savings for low power systems. n Operates with Internal 15ppm/°C Reference The LTC1604’s 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 333ksps. n 5MHz Full Power Bandwidth n ±2.5V Bipolar Input Range The unique differential input sample-and-hold can acquire n 36-Pin SSOP Package single-ended or differential input signals up to its 15MHz bandwidth. The 68dB common mode rejection allows APPLICATIONS users to eliminate ground loops and common mode noise by measuring signals differentially from the source. n Telecommunications n Digital Signal Processing The ADC has μP compatible,16-bit parallel output port. n Multiplexed Data Acquisition Systems There is no pipeline delay in conversion results. A separate n High Speed Data Acquisition convert start input and a data ready signal (BUSY) ease n Spectrum Analysis connections to FlFOs, DSPs and microprocessors. n Imaging Systems L, LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION 2.2μF 10μF 5V 10μF 5V 10μF 10Ω LTC1604 4096 Point FFT + + + 3 36 35 9 10 0 f V AV SAMPLE = 333kHz REF DD AVDD DVDD DGND fIN = 100kHz SHDN –20 33 SINAD = 89dB CS 32 THD = –96dB CONTROL –40 μP LOGIC CONVST 31 REFCOMP CONTROL 4 7.5k AND 2.5V RD 30 1.75X LINES –60 TIMING + 4.375V REF BUSY 27 47μF –80 OVDD 29 5V OR + AMPLITUDE (dB) 3V –100 10μF + OGND 28 1 AIN + DIFFERENTIAL 16-BIT OUTPUT –120 ANALOG INPUT B15 TO B0 – SAMPLING 16-BIT BUFFERS ±2.5V 2 AIN ADC – D15 TO D0 PARALLEL BUS –140 0 20 40 60 80 100 120 140 160 11 TO 26 AGND AGND AGND AGND VSS FREQUENCY (kHz) 1604 TA01 5 6 7 8 34 1604 TA02 10μF + –5V 1604fa 1
