LTC1446IN8#PBF Analog Devices

LTC1446/LTC1446L Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8 DESCRIPTIO FEATURES n Dual DACs with 12-Bit Resolution The LTC 1446/LTC1446L are dual 12-bit digital-to-analog n SO-8 Package converters (DACs) available in an SO-8 package. They are n Rail-to-Rail Output Amplifiers complete with a rail-to-rail voltage output amplifier, an n Internal Reference internal reference and an easy-to-use 3-wire cascadable n Maximum DNL Error: 0.5LSB serial interface. n 3V Operation (LTC1446L): I = 650m A Typ CC The LTC1446 has an internal reference and a full-scale n 5V Operation (LTC1446): I = 1000m A Typ CC output of 4.095V. It operates from a single 4.5V to 5.5V n Settling Time: 14m s to 0.5LSB supply. n Power-On Reset Clears DACs to 0V n The LTC1446L has an internal reference and a full-scale 3-Wire Cascadable Serial Interface with 500kHz output of 2.5V. It operates from a single 2.7V to 5.5V Update Rate n supply. Schmitt Trigger On Input Allows Direct Optocoupler Interface The low power supply current makes the LTC1446 family n Low Cost ideal for battery-powered applications. These DACs are U available in space saving 8-pin SO and PDIP packages and APPLICATIO S require no external components for operation. n Digital Calibration n Industrial Process Control n Automatic Test Equipment n Cellular Telephones , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Functional Block Diagram: Dual 12-Bit Rail-to-Rail DAC LTC1446: 5V LTC1446L: 3V TO 5V 7 V CC Differential Nonlinearity vs Input Code 2 D IN 0.5 + 0.4 V OUT B 8 0.3 12-BIT m P DAC B 0.2 1 CLK 0.1 24-BIT RAIL-TO-RAIL SHIFT VOLTAGE 0 3 CS/LD REG OUTPUT AND 0.1 DAC 0.2 LATCH + V OUT A 5 0.3 12-BIT DAC A 0.4 0.5 4 D OUT 0 512 1024 1536 2048 2560 3072 3584 4095 CODE POWER-ON 1446/46L G13 RESET GND 6 1446/1446L TA01 1 DNL ERROR (LSB) U ULTC1446/LTC1446L ABSOLUTEXAI U RATI GS (Note 1) V to GND ................................................ 0.5 to 7.5V V /V ................................. 0.5V to V + 0.5V CC OUT A OUT B CC Logic Inputs to GND ................................... 0.5 to 7.5V Maximum Junction Temperature .......................... 125 C Operating Temperature Range Storage Temperature Range ..................65 C to 150 C LTC1446C/LTC1446LC ............................ 0 C to 70 C Lead Temperature (Soldering, 10 sec)................. 300 C LTC1446I/LTC1446LI ..........................40 C to 85 C PACKAGE/ORDER INFORMATION ORDER PART ORDER PART NUMBER NUMBER TOP VIEW TOP VIEW CLK 1 8 V CLK 1 8 V OUT B OUT B LTC1446CN8 LTC1446CS8 D V D 2 7 V 2 7 IN CC IN CC LTC1446IN8 LTC1446IS8 CS/LD GND CS/LD 3 6 GND 3 6 LTC1446LCN8 LTC1446LCS8 D 4 5 V D 4 5 V OUT OUT A OUT OUT A LTC1446LIN8 LTC1446LIS8 N8 PACKAGE S8 PACKAGE S8 PART MARKING 8-LEAD PDIP 8-LEAD PLASTIC SO T = 125 C, q = 100 C/W T = 125 C, q = 150 C/W 1446 1446L JMAX JA JMAX JA 1446I 1446LI Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range. V = 4.5V to 5.5V (LTC1446), 2.7V to 5.5V (LTC1446L), V and V unloaded, T = T to T unless CC OUT A OUT B A MIN MAX, otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DAC Resolution l 12 Bits DNL Differential Nonlinearity Guaranteed Monotonic (Note 2) l 0.2 0.5 LSB INL Integral Nonlinearity T = 25 C 2.0 4.5 LSB A l 2.5 5.0 LSB ZSE Zero-Scale Error l 03 18 mV V Offset Error l 2 18 mV OS V TC Offset Error Tempco 15 m V/ C OS V Full-Scale Voltage LTC1446, T = 25 C 4.065 4.095 4.125 V FS A LTC1446 l 4.045 4.095 4.145 V LTC1446L, T = 25 C 2.470 2.500 2.530 V A LTC1446L l 2.460 2.500 2.540 V V TC Full-Scale Voltage Tempco 0.1 LSB/ C FS Power Supply (LTC1446) V Positive Supply Voltage For Specified Performance l 4.5 5.5 V CC I Supply Current 4.5V V 5.5V (Note 5) l 1000 1500 m A CC CC Power Supply (LTC1446L) V Positive Supply Voltage For Specified Performance l 2.7 5.5 V CC I Supply Current 2.7V V 5.5V (Note 5) l 650 1000 m A CC CC 2 U W U U W W W