LTC1864L/LTC1865L Power, 3V, 16-Bit, 150ksps 1- and 2-Channel ADCs in MSOP FEATURES DESCRIPTIO 16-Bit 150ksps ADCs in MSOP Package The LTC 1864L/LTC1865L are 16-bit A/D converters that Single 3V Supply are offered in MSOP and SO-8 packages and operate on a Low Supply Current: 450A (Typ) single 3V supply. At 150ksps, the supply current is only Auto Shutdown Reduces Supply Current 450A. The supply current drops at lower speeds because to 10A at 1ksps the LTC1864L/LTC1865L automatically power down True Differential Inputs between conversions. These 16-bit switched capacitor 1-Channel (LTC1864L) or 2-Channel (LTC1865L) successive approximation ADCs include sample-and-holds. Versions The LTC1864L has a differential analog input with an TM SPI/MICROWIRE Compatible Serial I/O external reference pin. The LTC1865L offers a software- 16-Bit Upgrade to 12-Bit LTC1285/LTC1288 selectable 2-channel MUX and an external reference pin on Pin Compatible with 12-Bit LTC1860L/LTC1861L the MSOP version. No Minimum Data Transfer Rate The 3-wire, serial I/O, small MSOP or SO-8 package and U extremely high sample rate-to-power ratio make these APPLICATIO S ADCs ideal choices for compact, low power, high speed systems. High Speed Data Acquisition Portable or Compact Instrumentation These ADCs can be used in ratiometric applications or Low Power Battery-Operated Instrumentation with external references. The high impedance analog Isolated and/or Remote Data Acquisition inputs and the ability to operate with reduced spans down to 1V full scale allow direct connection to signal sources in many applications, eliminating the need for external gain stages. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. TYPICAL APPLICATIO Supply Current vs Sampling Frequency Single 3V Supply, 150ksps, 16-Bit Sampling ADC 1000 CONV LOW = 2s T = 25C A 1F V = 2.7V CC 100 3V LTC1864L 10 1 8 V V REF CC 2 7 + IN SCK ANALOG INPUT SERIAL DATA LINK TO 3 6 1 0V TO 3V ASIC, PLD, MPU, DSP IN SDO OR SHIFT REGISTERS 4 5 GND CONV 1864 TA01 0.1 0.01 0.1 1 10 100 1000 SAMPLING FREQUENCY (kHz) 1864L/65L TA02 sn18645L 18645Lfs 1 SUPPLY CURRENT (A) U ULTC1864L/LTC1865L ABSOLUTE AXI U RATI GS (Notes 1, 2) Operating Temperature Range Supply Voltage (V ) ................................................. 7V CC LTC1864LC/LTC1865LC/ Ground Voltage Difference LTC1864LAC/LTC1865LAC .................... 0C to 70C AGND, DGND LTC1865L MSOP Package ......... 0.3V LTC1864LI/LTC1865LI/ Analog Input ............... (GND 0.3V) to (V + 0.3V) CC LTC1864LAI/LTC1865LAI ................. 40C to 85C Digital Input ................................ (GND 0.3V) to 7V Storage Temperature Range ................. 65C to 150C Digital Output .............. (GND 0.3V) to (V + 0.3V) CC Lead Temperature (Soldering, 10 sec)................. 300C Power Dissipation.............................................. 400mW UUW PACKAGE/ORDER I FOR ATIO ORDER PART ORDER PART NUMBER NUMBER TOP VIEW TOP VIEW LTC1864LCMS8 LTC1865LCMS CONV 1 10 V V 1 8 V REF REF CC + CH0 2 9 V IN 2 7 SCK CC LTC1865LIMS LTC1864LIMS8 CH1 3 8 SCK IN 3 6 SDO AGND 4 7 SDO LTC1864LACMS8 LTC1865LACMS GND 4 5 CONV DGND 5 6 SDI LTC1865LAIMS MS8 PACKAGE LTC1864LAIMS8 MS PACKAGE 8-LEAD PLASTIC MSOP 10-LEAD PLASTIC MSOP MS8 PART MARKING MS PART MARKING T = 150C, = 210C/W JMAX JA T = 150C, = 210C/W JMAX JA LTC7 LTJ4 ORDER PART ORDER PART TOP VIEW TOP VIEW NUMBER NUMBER 1 8 CONV 1 8 V V V REF CC CC LTC1864LCS8 LTC1865LCS8 + IN 2 7 SCK CH0 2 7 SCK LTC1864LIS8 LTC1865LIS8 IN 3 6 SDO CH1 3 6 SDO LTC1864LACS8 LTC1865LACS8 GND 4 5 CONV GND 4 5 SDI LTC1864LAIS8 LTC1865LAIS8 S8 PACKAGE S8 PACKAGE S8 PART MARKING S8 PART MARKING 8-LEAD PLASTIC SO 8-LEAD PLASTIC SO T = 150C, = 175C/W T = 150C, = 175C/W JMAX JA JMAX JA 1864L 1864LA 1865L 1865LA 1864LI 864LAI 1865LI 865LAI Consult LTC Marketing for parts specified with wider operating temperature ranges. CO VERTER A D ULTIPLEXER CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are T = 25C. A V = 2.7V, V = 2.5V, f = f as defined in Recommended Operating Conditions, unless otherwise noted. CC REF SCK SCK(MAX) LTC1864L/LTC1865L LTC1864LA/LTC1865LA PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Resolution 16 16 Bits No Missing Codes Resolution 14 15 Bits INL (Note 3) 8 6 LSB Transition Noise 2 2 LSB RMS Gain Error 20 20 mV sn18645L 18645Lfs 2 U U W U WWW