LTC2642-16 Linear Technology Corporation, LTC2642-16 Datasheet
LTC2642-16
Related parts for LTC2642-16
LTC2642-16 Summary of contents
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... DACs. These DACs operate from a single 2.7V to 5.5V supply and are guaranteed monotonic over temperature. The LTC2641-16/LTC2642-16 provide 16-bit performance (±2LSB INL and ±1LSB DNL) over temperature. Unbuffered DAC outputs result in low supply current of 120μ ...
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... JMAX JA EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB 2 (Note 1) Operating Temperature Range LTC2641C/LTC2642C ............................... 0°C to 70°C LTC2641I/LTC2642I ............................. –40°C to 85°C + 0.3V Maximum Junction Temperature .......................... 125°C + 0.3V Storage Temperature Range ................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C ...
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... LTC2642IDD-14#PBF LTC2642IDD-14#TRPBF LTC2642IDD-12#PBF LTC2642IDD-12#TRPBF LTC2642CMS-16#PBF LTC2642CMS-16#TRPBF LTC2642CMS-14#PBF LTC2642CMS-14#TRPBF LTC2642CMS-12#PBF LTC2642CMS-12#TRPBF LTC2642IMS-16#PBF LTC2642IMS-16#TRPBF LTC2642IMS-14#PBF LTC2642IMS-14#TRPBF LTC2642IMS-12#PBF LTC2642IMS-12#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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... REF P-P Code = 0000hex Code = FFFFhex V = 3. 2. 4. 2. 2.5V 10pF, GND = ∞ unless L L LTC2641-14 LTC2641-16 LTC2642-14 LTC2642-16 MIN TYP MAX MIN TYP MAX ±0.5 ±1 ±0.5 ±0.5 ±1 ±0.5 2 ±0.05 ±0.05 ±1 ±4 ±2 ±0.1 ± ...
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... Note 2: Continuous operation above the specifi ed maximum operating junction temperature may impair device reliability. Note 3: LTC2641-16/LTC2642-16 ±1LSB = ±0.0015% = ±15.3ppm of full scale. LTC2641-14/LTC2642-14 ±1LSB = ±0.006% = ±61ppm of full scale. LTC2641-12/LTC2642-12 ±1LSB = ±0.024% = ±244ppm of full scale. ...
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... Integral Nonlinearity (INL) 1.0 LTC2642-16 0 2.5V REF 0.6 DD 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 49152 65535 CODE 26412 G01 Differential Nonlinearity (DNL) 1.0 LTC2642-16 0 2.5V REF 0.6 DD 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0 16384 32768 49152 65535 CODE 26412 G04 INL vs Temperature 1 2.5V REF ...
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... I vs Code (Unipolar LTC2641) REF 250 V = 2.5V REF 200 150 100 50 0 16383 0 16384 32768 49152 CODE 26412 G14 I vs Code (Bipolar LTC2642) REF 250 V REF = 2.5V 200 150 100 50 0 4095 0 16384 32768 49152 CODE 26412 G17 60 85 26412 G12 65535 26412 G15 ...
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... LTC2641/LTC2642 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current ( Temperature 150 V = 2.5V REF 125 100 –40 – TEMPERATURE (°C) 26412 G19 Supply Current ( REF 150 125 100 3 1.5 2 2.5 3 4.5 V (V) REF 26412 G22 ...
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... Feedback Resistor. Connect to an external FB amplifi er’s output in bipolar mode. The bipolar output range is –V V (Pin 9): Supply Voltage. Set between 2.7V and DD 5.5V. GND (Pin 10): Circuit Ground. Exposed Pad (DFN Pin 11): Circuit Ground. Must be soldered to PCB ground. LTC2641/LTC2642 . REF REF 26412f 9 ...
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... An external voltage reference determines the DAC’s full-scale output volt- DD age. A 3-wire serial interface allows the LTC2641/LTC2642 to fi t into a small 8-/10-pin MSOP or DFN 3mm × 3mm package. 10 LTC2642-16 LTC2642-14 LTC2642-12 V OUT SCLK ...
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... Serial Interface The LTC2641/LTC2642 communicates via a standard 3-wire SPI/QSPI/MICROWIRE compatible interface. The CS SCLK 1 2 DIN D15 D14 D13 D12 D11 D10 MSB Figure 1a. 16-Bit Timing Diagram (LTC2641-16/LTC2642-16) CS SCLK 1 2 DIN D13 D12 D11 D10 MSB Figure 1b. 14-Bit Timing Diagram (LTC2641-14/LTC2642-14) CS ...
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... V (1/16,384) REF 0000 0000 0000 00xx 0V 12 32,768 (LTC2642-16); 8,192 (LTC2642-14); or 2,048 (LTC2642-12). Clearing the DAC A 10ns (minimum) low pulse on the ⎯ C ⎯ L ⎯ R pin asynchro- nously clears the DAC latch to code zero (LTC2641 midscale (LTC2642). ...
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... REF 5V/ LTC2642- SCLK 4 DIN 5 CLR Figure 3. 16-Bit Bipolar Output (LTC2642-16) V Table 2a. 16-Bit Bipolar Offset Binary Code Table (LTC2642-16) DIGITAL INPUT BINARY NUMBER ANALOG OUTPUT IN DAC LATCH (V ) OUT MSB LSB 1111 1111 1111 1111 V (32,767/32,768) ...
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... In bipolar mode (LTC2642 only), the amplifi er operates with the internal resistors to provide bipolar offset and scaling. In this case, a precision amplifi er operating from ...
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... GND the positive supply rail. The small LSB size of a 16-bit DAC, coupled with the tight accuracy specifi cations on the LTC2641/LTC2642, means that the accuracy and input specifi cations for the external op amp are critical for overall DAC performance. ...
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... LSB ] LTC2642’s very low gain error tempco of 0.1ppm/°C, typi- V REF cal, corresponds to less than 0.5LSB variation over the –40°C to 85°C temperature range. In practice, this means that the overall gain error tempco will be determined almost entirely by the external reference tempco. ...
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... Digital Inputs and Interface Logic All of the digital inputs include Schmitt-trigger buffers to accept slow transition interfaces. This means that op- tocuplers can interface directly to the LTC2641/LTC2642 without additional external logic. Digital input hysteresis is typically 150mV. The digital inputs are compatible with TTL/CMOS-logic levels ...
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... LTC2641/LTC2642 PACKAGE DESCRIPTION 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH ...
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... DETAIL “A” 0.254 (.010) 0° – 6° TYP GAUGE PLANE 0.53 ± 0.152 (.021 ± .006) DETAIL “A” 0.18 (.007) SEATING PLANE LTC2641/LTC2642 3.00 ± 0.102 (.118 ± .004) 0.52 (.0205) (NOTE REF 3.00 ± 0.102 4.90 ± 0.152 (.118 ± .004) (.193 ± .006) ...
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... LTC2641/LTC2642 TYPICAL APPLICATION LTC2641- SCLK 4 DIN 5 CLR RELATED PARTS PART NUMBER DESCRIPTION DACs LTC1588/LTC1589 12-/14-/16-Bit SoftSpan TM LTC1592 LTC1595/LTC1596 Serial 16-Bit Current Output DACs LTC1591/LTC1597 Parallel 14-/16-Bit Current Output DACs LTC1599 16-Bit Current Output DAC LTC1650 16-Bit Voltage Output DAC ...