LTC1650ACS#TRPBF

LTC1650 Low Glitch 16-Bit Voltage Output DAC U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO The LTC®1650 is a deglitched rail-to-rail voltage output 16-bit digital-to-analog converter (DAC) available in a 16-pin narrow SO package. It has 16-bit monotonicity over temperature and includes a rail-to-rail output buffer amplifier and an easy to use three-wire cascadable serial interface. The LTC1650 operates with dual ±5V supplies. 16-Bit Monotonic Over Temperature Low Glitch Impulse: 2nV-s Low Noise: 30nV/√Hz Buffered Rail-to-Rail Voltage Output Low Power: 50mW from ±5V Supplies Unipolar or Bipolar Output (0V to VREF or ±VREF) 4-Quadrant Multiplying Capability Asynchronous Clear to User-Defined Voltage Power-On Reset Three-Wire SPI and MICROWIRETM Compatible Serial Interface Schmitt Trigger On CLK Input Allows Direct Optocoupler Interface 16-Pin Narrow SO Package With REFLO = 0V and REFHI = VREF, the output will swing from 0V to VREF in unipolar mode or ±VREF in bipolar mode. The LTC1650 has excellent accuracy over its full operating temperature range along with very low power dissipation of 50mW with dual ±5V supplies. This, along with the small outline package, makes it the most flexible high resolution digital-to-analog converter available today. U APPLICATIO S ■ ■ ■ ■ ■ The LTC1650 has a fast settling time of 4µs to 16 bits and a low midscale glitch of under 2nV-s. This makes the LTC1650 ideal for waveform generation or other applications where output dynamic performance is important. Industrial Process Control Precision Industrial Equipment Waveform Generation Automatic Test Equipment High Resolution Offset and Gain Adjustment , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. U TYPICAL APPLICATIO 5V 5V 3 CS/LD 8 CLK 7 RSTOUT 4.096V DVDD 11 REFHI 15 10 AVDD Differential Nonlinearity vs Input Code 1.0 DOUT 16-BIT DAC 9 CLR 2 VRST + 1 VOUT – 0.8 0.6 DNL ERROR (LSB) 16-BIT DAC REGISTER 5 16-BIT SHIFT REGISTER DIN POWER-ON RESET SUPPLY SENSE 0.4 0.2 0 – 0.2 – 0.4 – 0.6 – 0.8 6 16 4 DGND 12,13 REFLO 14 AVSS 1650 TA01 UNI/BIP – 1.0 0 16384 32768 CODE 49152 65535 1650 TA02 – 5V 1 LTC1650 W W W AXI U U ABSOLUTE RATI GS U U W PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW AVDD, DVDD to DGND .............................. – 0.5V to 7.5V TTL Input Voltage .................................... – 0.5V to 7.5V VOUT, VRST ................................ – 0.5V to (AVDD + 0.5V) AVSS .........................................................0.5V to – 7.5V Operating Temperature Range LTC1650C .............................................. 0°C to 70°C LTC1650I ............................................ – 40°C to 85°C Maximum Junction Temperature ......................... 125°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C VOUT 1 16 UNI/BIP VRST 2 15 AVDD DVDD 3 14 AVSS DGND 4 13 REFLO S DIN 5 12 REFLO F DOUT 6 ORDER PART NUMBER LTC1650ACN LTC1650AIN LTC1650ACS LTC1650AIS LTC1650CN LTC1650IN LTC1650CS LTC1650IS 11 REFHI CLK 7 10 RSTOUT CS/LD 8 9 N PACKAGE 16-LEAD PDIP CLR S PACKAGE 16-LEAD PLASTIC SO TJMAX = 125°C, θJA = 85°C/ W (N) TJMAX = 125°C, θJA = 130°C/ W (S) Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AVDD = 4.75V to 5.25V, AVSS = – 4.75V to – 5.25V, DVDD = 4.75V to 5.25V, REFLO = 0V, REFHI = 4.096V, VOUT unloaded, unless otherwise noted. SYMBOL PARAMETER LTC1650CS/CN LTC1650IS/IN MIN TYP MAX CONDITIONS LTC1650ACS/ACN LTC1650AIS/AIN MIN TYP MAX UNITS DAC Characteristics, Unipolar/Bipolar Output Unless Otherwise Noted Resolution Monotonicity ● 16 ● 16 16 Bits 16 Bits DNL Differential Nonlinearity Guaranteed Monotonic (Note 2) ● ±0.15 ±0.9 ±0.15 ±0.5 LSB INL Integral Nonlinearity Integral Nonlinearity (Note 2) ● ±4 ±16 ±4 ±8 LSB Bipolar Zero Error Bipolar Zero Error TA = 25°C TA = TMIN to TMAX ±5 ±12 ±18 ±5 ● ±12 ±18 LSB LSB VOS Unipolar Offset Error TA = TMIN to TMAX ● ±0.5 ±12 ±0.5 ±12 LSB VOSTC Offset Error Temperature Coefficient Gain Error ±0.5 TA = TMIN to TMAX ● ±18 ±0.5 Gain Error Temperature Coefficient 2 ±4 ±0.5 Bipolar Negative Full-Scale Error TA = TMIN to TMAX See Definitions Section Bipolar Negative Full-Scale Error Tempco See Definitions Section ● ±1 ±0.75 ±4 µV/°C ±12 ±0.5 ±16 ±1 ±0.75 LSB ppm/°C ±12 LSB ppm/°C LTC1650 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AVDD = 4.75V to 5.25V, AVSS = – 4.75V to – 5.25V, DVDD = 4.75V to 5.25V, REFLO = 0V, REFHI = 4.096V, VOUT unloaded, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply Characteristics AVDD Positive Supply Voltage ● 4.75 5.0 5.25 V DVDD Positive Supply Voltage ● 4.75 5.0 5.25 V AVSS Negative Supply Voltage ● – 4.75 – 5.0 – 5.25 V IAVDD AVDD Supply Current 4.75V ≤ AVDD ≤ 5.25V (Note 5) ● 5 7.5 IAVSS AVSS Supply Current – 5.25V ≤ AVSS ≤ – 4.75V (Note 5) ● – 7.5 –5 IDVDD DVDD Supply Current 4.75V ≤ DVDD ≤ 5.25V (Note 5) ● 0.1 0.25 mA AVDD, DVDD Supply Rejection 4.75V ≤ AVDD, DVDD ≤ 5.25V ● 0.5 1.5 LSB/V AVSS Supply Rejection – 5.25V ≤ AVSS ≤ – 4.75V ● 0.5 1.5 LSB/V PSRR mA mA Reference Input RIN Reference Input Resistance ● 2.5 5 7.5 kΩ REFHI Range ● – 4.0 4.0 4.5 V REFLO Range ● – 1.0 0 1.0 V Op Amp DC Performance Short-Circuit Current Low VOUT Shorted to GND ● 25 50 mA Short-Circuit Current High VOUT Shorted to VCC ● 25 50 mA Output Impedance Measured at Midscale DAC Output Range Unipolar Mode (Note 9) Bipolar Mode (Note 9) 0.15 Ω 0V to VREF ±VREF V V AC Performance Voltage Output Slew Rate Voltage Output Settling Time SINAD ● Unloaded (Note 4) 0.8 2.0 4 V/µs µs Midscale Glitch Impulse 1.8 nV-s Digital Feedthrough 0.05 nV-s Output Noise Voltage Density 1kHz to 100kHz (Note 6) 30 nV/√Hz Signal-to-Noise + Distortion Ratio REFHI = 1kHz 4VP-P 96 dB 3 LTC1650 ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AVDD = 4.75V to 5.25V, AVSS = – 4.75V to – 5.25V, DVDD = 4.75V to 5.25V, REFLO = 0V, REFHI = 4.096V, VOUT unloaded, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS 0.8 V Digital I/O Characteristics VIH Digital Input High Voltage ● VIL Digital Input Low Voltage ● VOH Digital Output High Voltage VOL ILK CIN 2.4 V IOUT = –1mA, DOUT Only ● VCC – 1.0 V Digital Output Low Voltage IOUT = 1mA, DOUT Only ● 0.4 V Digital Input Leakage VIN = GND to VCC ● ±10 µA Digital Input Capacitance (Note 3) 10 pF 200 500 Ω 2.5 2.5 3.2 3.2 V V Reset Characteristics RON VOUT and VRST Switch Resistance Threshold Voltage for Reset VRST = 0.5V (Note 7) ● AVDD or DVDD (Note 8) ● ● 1.5 1.5 ● 40 AVSS(Note 8) Switching Characteristics t1 DIN Valid to CLK Setup t2 DIN Valid to CLK Hold ● 0 ns t3 CLK High Time (Note 3) ● 40 ns t4 CLK Low Time (Note 3) ● 40 ns t5 CS/LD Pulse Width (Note 3) ● 50 ns t6 LSB CLK to CS/LD (Note 3) ● 40 ns t7 CS/LD Low to CLK (Note 3) ● 20 ns t8 DOUT Output Delay CLOAD = 100pF ● 5 t9 CLK Low to CS/LD Low (Note 3) ● 20 ns t10 CLR Pulse Width ● 50 ns Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Nonlinearity is defined from code 0 to code 65535 (full scale) (end point INL, see Definitions section). Note 3: Guaranteed by design. Not subject to test. Note 4: To ±1LSB. Unipolar mode. DAC switched between all 1s and all 0s. 4 ns 45 150 ns Note 5: Digital Inputs at 0V or DVDD. Note 6: Measured at VOUT. REFHI = REFLO = 0V, unipolar mode. Note 7: When part powers up or when it is reset, the output is connected to VRST through this switch. Note 8: Reset is active when any supply goes below this threshold. Note 9: REFLO = 0V, REFHI = VREF. For REFLO ≠ 0V see Operation section. LTC1650 U W TYPICAL PERFOR A CE CHARACTERISTICS Differential Nonlinearity (DNL) vs Input Code 5 1.0 4 0.8 3 0.6 2 0.4 DNL ERROR (LSB) INL ERROR (LSB) Integral Nonlinearity (INL) vs Input Code 1 0 –1 –2 CS/LD 5V/DIV 4.096V 0.2 VOUT 1V/DIV 0 –0.2 –0.4 –3 –0.6 –4 –0.8 –5 Large Signal Settling Time 0V –1.0 0 16384 32768 CODE 49152 65535 0 16384 32768 CODE 49152 1650 G01 65535 1µs/DIV 1650 G02 Large Signal Settling Time Mid-Scale Glitch CS/LD 5V/DIV 1650 G03 Broadband Noise CS/LD 5V/DIV 4.096V 50µV/DIV REFERRED TO DAC OUTPUT VOUT 10mV/DIV VOUT 1V/DIV 0V BW = 100kHz 500ns/DIV 1650 G04 Minimum Supply Headroom for Full Output Swing vs Load Current 1.0 0.8 100 5.5 5.4 90 ATTENUATION (dB) 0.7 VCC – VOUT AVDD Supply Current vs Temperature Reference Feedthrough ∆ VOUT < 1LSB VOUT = 4.096V CODE: ALL 1’s 0.9 1650 G06 1650 G05 0.6 0.5 0.4 0.3 0.2 5.3 SUPPLY CURRENT (mA) 1µs/DIV 200µs/DIV 80 70 60 5.2 5.1 5.0 4.9 4.8 4.7 50 0.1 4.6 0 40 0 5.0 10.0 LOAD CURRENT (mA) 15.0 1650 G07 1 100 10k 1M FREQUENCY (Hz) 100M 1650 G08 4.5 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 1650 G09 5 LTC1650 U W TYPICAL PERFOR A CE CHARACTERISTICS AVSS Supply Current vs Temperature DVDD Supply Current vs Temperature –4.5 Offset Error vs Temperature 0 25 –4.6 –4.8 –4.9 –5.0 –5.1 –5.2 OFFSET ERROR (LSB) 20 SUPPLY CURRENT (µA) SUPPLY CURRENT (mA) –4.7 15 10 –0.5 –1.0 –1.5 –5.3 5 –5.4 –5.5 –55 –35 –15 0 –55 –35 –15 5 25 45 65 85 105 125 TEMPERATURE (°C) 5 25 45 65 85 105 125 TEMPERATURE (°C) 1650 G10 –25 5 35 65 TEMPERATURE (°C) 95 125 1650 G12 1650 G11 Supply Current vs Logic Input Voltage Gain Error vs Temperature 0 2 ALL LOGIC INPUTS TIED TOGETHER DVDD SUPPLY CURRENT (mA) –1 –2 –3 GAIN ERROR (LSB) –2.0 –55 –4 –5 –6 –7 –8 1 –9 –10 –55 0 –25 5 35 65 TEMPERATURE (°C) 95 125 0 1 2 3 4 LOGIC INPUT VOLTAGE (V) 1650 G13 5 1650 G14 U U U PI FU CTIO S VOUT (Pin 1): The DAC Output. The output will swing from REFLO to REFHI in unipolar mode and from (2 • REFLO – REFHI) to REFHI in bipolar mode. VRST (Pin 2): The user-defined voltage to which the output gets reset when CLR is active, when any of the supplies drop below 2.5V or when the part powers-up. The output will stay at this voltage until a new code is loaded into the DAC register. DVDD (Pin 3): The Digital Positive Supply Input. 4.75V ≤ DVDD ≤ 5.25V. 6 DGND (Pin 4): Digital Ground. DIN (Pin 5): The TTL Level Input for the Serial Interface Data. Data on the DIN pin is latched into the shift register on the rising edge of the serial clock. Data is loaded as one 16-bit word, MSB first. DOUT (Pin 6): The output of the shift register that becomes valid on the rising edge of the serial clock. CLK (Pin 7): The TTL Level Input for the Serial Interface Clock. LTC1650 U U U PI FU CTIO S CS/LD (Pin 8): The TTL Level Input for the Serial Interface Enable and Load Control. When CS/LD is low, the CLK signal is enabled so the data can be clocked in. When CS/LD is pulled high, data is loaded from the shift register into the DAC register, updating the DAC output. REFLO F/REFLO S (Pins 12, 13): The Force and Sense Pin for the Lower Reference Input. This should nominally be tied to ground. This pin can swing from – 1V to 1V. CLR (Pin 9): The DAC is cleared to VRST when this pin is pulled low. It should be logic high for normal operation. AVDD (Pin 15): The Analog Positive Supply Input. 4.75V ≤ AVDD ≤ 5.25V. Requires a bypass capacitor to ground. RSTOUT (Pin 10): The logic output pin that goes active when any of the supplies drop below 2.5V. This pin is active low. UNI/BIP (Pin 16): The Unipolar/Bipolar Selection Pin. For unipolar operation, tie this pin to VOUT and for bipolar operation, tie this pin the REFHI. AVSS (Pin 14): The Analog Negative Supply Input. – 5.25V ≤ AVSS ≤ – 4.75V. Requires a bypass capacitor to ground. REFHI (Pin 11): The Reference Input Pin. The DAC is capable of 4-quadrant multiplying; this pin can swing from 4.5V to – 4V. WU W TI I G DIAGRA t6 t2 t1 t4 t3 t7 CLK B15 MSB DIN B14 B13 B0 LSB B1 t9 t5 CS/LD t8 DOUT B15 (PREVIOUS WORD) B14 B13 B1 B0 1650 TD 7 LTC1650 U U DEFINITIONS Resolution (n) Differential Nonlinearity (DNL) Resolution is defined as the number of digital input bits, n. It defines the number of DAC output states (2n) that divide the full-scale range. The resolution does not imply linearity. DNL is the difference between the measured change and the ideal 1LSB change between any two adjacent codes. The DNL error between any two codes is calculated as follows: Full-Scale Voltage (VFS) This is the output of the DAC when all bits are set to 1. The output will swing from REFLO to REFHI in unipolar mode and from (2 • REFLO – REFHI) to REFHI when in bipolar mode. Voltage Offset Error (VOS) This is the voltage at the output when the DAC is loaded with all zeros. Least Significant Bit (LSB) One LSB is the ideal voltage difference between two successive codes. LSB = (VFS – VOS)/(2n – 1) = (VFS – VOS)/65535 DNL = (∆VOUT – LSB)/LSB ∆VOUT = The measured voltage difference between two adjacent codes. Gain Error (GE) Gain error is the difference between the full-scale output of a DAC from its ideal full-scale value after offset error has been adjusted for. Bipolar Zero Error When configured for bipolar output and with REFLO tied to 0V, the LTC1650 output should be 0V with (100…00) loaded in. Any deviation from 0V at this code is called bipolar zero error. Bipolar Negative Full-Scale Error Integral Nonlinearity (INL) Endpoint INL is the maximum deviation from a straight line passing through the endpoints of the DAC transfer curve. It is measured after adjusting out gain and offset error for the DAC. 8 This is the offset error of the LTC1650 in bipolar mode. LTC1650 U OPERATIO Serial Interface The data on the DIN input is loaded into the shift register on the rising edge of the clock. Data is loaded as one 16-bit word, MSB first. The DAC register loads the data from the shift register when CS/LD is pulled high. The clock is disabled internally when CS/LD is high. Note: CLK must be low before CS/LD is pulled low to avoid an extra internal clock pulse. The buffered output of the 16-bit shift register is available on the DOUT pin which swings from DGND to DVDD. Multiple LTC1650s may be daisy-chained together by connecting the DOUT pin to the DIN pin of the next chip while the clock and CS/LD signals remain common to all chips in the daisy chain. The serial data is clocked to all of the chips, then the CS/LD signal is pulled high to update all of them simultaneously. When CLR is pulled low or when the part powers up, the output connects through an internal pass gate to VRST and will go to whatever voltage is on VRST. When any of three supplies (DVDD, AVDD, |AVSS|) goes below 2.5V, the RSTOUT pin goes low and stays low as long as the supply is below 2.5V. The power-on reset is also activated when one of the supplies drops below 2.5V and the output is then connected to VRST. The output connects to VRST when any of three conditions occur: CLR goes low, the part powers up or one of the supplies drops below 2.5V. This condition exists as long as CS/LD is low. As soon as CS/LD goes high, the DAC register is loaded with the data in the shift register and the output will settle to its new value. Voltage Output The LTC1650 rail-to-rail buffered output can source or sink 5mA over the entire operating temperature range. The output is specified to swing up to ±4.5V on ±4.75V supplies with VOUT unloaded. (For typical output swing at various load currents, refer to the typical curve “Minimum Supply Headroom for Full Output Swing vs Load Current.”) The buffer amplifier can drive 1000pF without going into oscillation. The LTC1650 has a deglitched voltage output. The midscale glitch is less than 2nV-s. The digital feedthrough is about 0.05nV-s. Output Ranges The LTC1650 is capable of unipolar or bipolar output swing. When the UNI/BIP pin is connected to VOUT the part is configured for unipolar operation and the output will swing from REFLO to REFHI. When UNI/BIP is connected to REFHI the part is configured in bipolar mode and the output will swing from (2 • REFLO – REFHI) to REFHI and will be at REFLO at midscale. With REFLO = 0V the output swing is ±REFHI in bipolar mode and 0V to REFHI in unipolar mode. 9 LTC1650 U TYPICAL APPLICATIO 16-Bit Industrial Process Controller 6V TO 30V 5V IN LT1019-4.5 0.1µF 5V 0.1µF 4.5V REFHI AVDD DVDD UNI/BIP CLK DIN CS/LD µP LTC1650 VOUT CLR CONTROL VOLTAGE 0V TO 4.5V (69µV/LSB) RSTOUT DOUT REFLO F/S DGND AVSS VRST –5V 0.1µF 1650 TA03 10 LTC1650 U PACKAGE DESCRIPTION N Package 16-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) 0.770* (19.558) MAX 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 0.255 ± 0.015* (6.477 ± 0.381) 0.130 ± 0.005 (3.302 ± 0.127) 0.300 – 0.325 (7.620 – 8.255) 0.020 (0.508) MIN 0.009 – 0.015 (0.229 – 0.381) ( +0.035 0.325 –0.015 8.255 +0.889 –0.381 0.045 – 0.065 (1.143 – 1.651) ) 0.065 (1.651) TYP 0.125 (3.175) MIN 0.018 ± 0.003 (0.457 ± 0.076) 0.100 (2.54) BSC *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) N16 1098 S Package 16-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.386 – 0.394* (9.804 – 10.008) 16 15 14 13 12 11 10 9 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 2 3 4 5 6 0.053 – 0.069 (1.346 – 1.752) 0.008 – 0.010 (0.203 – 0.254) 0.014 – 0.019 (0.355 – 0.483) TYP 8 0.004 – 0.010 (0.101 – 0.254) 0° – 8° TYP 0.016 – 0.050 (0.406 – 1.270) 7 0.050 (1.270) BSC S16 1098 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 11 LTC1650 U TYPICAL APPLICATIO A ±10V Bipolar Output 16-Bit DAC 5V 0.1µF 5V 0.1µF BIPOLAR OUT IN UNIPOLAR IN DVDD AVDD UNI/BIP REFHI 15V LT1019-4.5 CLK DIN 15V CS/LD µP VOUT LTC1650 CLR RSTOUT + LT1468 – REFLO DGND AVSS VRST –15V 110k –5V 0.1µF 0V TO 10V (UNIPOLAR MODE) –10V TO 10V (BIPOLAR MODE) 90k 10pF 1650 TA04 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC1257 Single 12-Bit VOUT DAC, Full Scale: 2.048V, VCC: 4.75V to 15.75V, Reference Can Be Overdriven Up to 12V, i.e., FSMAX = 12V 5V to 15V Single Supply, Complete VOUT DAC in SO-8 Package LTC1446/LTC1446L Dual 12-Bit VOUT DACs in SO-8 Package LTC1446: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V LTC1446L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V LTC1448 Dual 12-Bit VOUT DAC, VCC: 2.7V to 5.5V Output Swings from GND to REF. REF Input Can Be Tied to VCC LTC1450/LTC1450L Single 12-Bit VOUT DACs with Parallel Interface LTC1450: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V LTC1450L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V LTC1451/LTC1452/ LTC1453 Single 12-Bit VOUT DACs with Serial Interface LTC1451: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V LTC1452: VCC = 2.7V to 5.5V, VOUT = 0V to 2 • VREF LTC1453: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V LTC1456 Single Rail-to-Rail Output 12-Bit DAC with Clear Pin, Full Scale: 4.095V, VCC: 4.5V to 5.5V Low Power, Complete VOUT DAC in SO-8 Package with Clear Pin LTC1458/LTC1458L Quad 12 Bit Rail-to-Rail Output DACs with Added Functionality LTC1458: VCC = 4.5V to 5.5V, VOUT = 0V to 4.095V LTC1458L: VCC = 2.7V to 5.5V, VOUT = 0V to 2.5V LTC1595/LTC1596 16-Bit Serial I/O Multiplying IOUT DACs ±1LSB Max INL/DNL, Low Glitch, SO-8 Package (LTC1595), Clear Pin (LTC1596) LTC1659 Single Rail-to-Rail 12-Bit VOUT DAC in MSOP-8 Package, VCC: 2.7V TO 5.5V Low Power Multiplying VOUT DAC in MSOP-8 Package. Output Swings from GND to REF. REF Input Can be Tied to VCC DACs References LT1019 Precision Voltage Reference Ultralow Drift 5ppm/°C, Initial Accuracy: 0.05% LT1634 Micropower Precision Reference Low Drift 10ppm/°C, Initial Accuracy: 0.05% 12 Linear Technology Corporation 1650fa LT/TP 1001 1.5K REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com  LINEAR TECHNOLOGY CORPORATION 1998