LTC2751-14 Linear Technology Corporation, LTC2751-14 Datasheet
LTC2751-14
Related parts for LTC2751-14
LTC2751-14 Summary of contents
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... DACs. They operate from a single 2.7V to 5.5V supply. All parts are guaranteed monotonic over temperature. The LTC2751A-16 provides 16-bit performance (±1LSB INL and DNL) over temperature without any adjustments. These SoftSpan™ DACs offer six output ranges— ...
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... LTC2751-14 UHF PACKAGE 38-LEAD (5mm × 7mm) PLASTIC QFN T = 125°C, θ = 34°C/W JMAX JA EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB PART MARKING* PACKAGE DESCRIPTION 275112 38-Lead (5mm × 7mm) Plastic QFN 275112 38-Lead (5mm × ...
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... THD Total Harmonic Distortion Output Noise Voltage Density Power Supply V Supply Voltage DD I Supply Current 5V unless otherwise specifi ed. The DD REF LTC2751-12 LTC2751-14 MIN TYP MAX MIN TYP MAX ● ● ● ±1 ±1 ● ±1 ± ...
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... LTC2751 ELECTRICAL CHARACTERISTICS specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Digital Inputs V Digital Input High Voltage IH V Digital Input Low Voltage IL I Digital Input Current IN C Digital Input Capacitance ...
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... Note 8. REF = 6V at 1kHz range. DAC code = FS. Output RMS amplifi LT1469. Note 9. Calculation from V (Boltzmann constant resistance (Ω), T = temperature (°K), and B = bandwidth (Hz). Note 10. Guaranteed by design. Not production tested. LTC2751 denotes specifi cations that ● MIN TYP MAX UNITS ● ...
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... LTC2751 TYPICAL PERFORMANCE CHARACTERISTICS LTC2751-16 Integral Nonlinearity (INL REF ±10V RANGE 0.6 0.4 0.2 0.0 –0.2 –0.4 –0.6 –0.8 –1.0 32768 0 16384 CODE INL vs Temperature 1 0 REF ±10V RANGE 0.6 0.4 +INL 0.2 0.0 –INL –0.2 –0.4 –0.6 – 0.8 –1.0 –40 – TEMPERATURE (°C) ...
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... TYPICAL PERFORMANCE CHARACTERISTICS LTC2751-16 INL 1.0 0.8 0.6 0.4 +INL 0.2 0.0 –INL –0.2 –0.4 –0.6 –0.8 –1.0 2 LTC2751-14 Integral Nonlinearity (INL REF ±10V RANGE 0.6 0.4 0.2 0.0 –0.2 –0.4 –0.6 –0.8 –1.0 0 4096 8192 CODE LTC2751-12 Integral Nonlinearity (INL REF ±10V RANGE ...
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... LTC2751 TYPICAL PERFORMANCE CHARACTERISTICS LTC2751-12, LTC2751-14, LTC2751-16 Midscale Glitch UPD 5V/DIV V OUT 2mV/DIV 500ns/DIV USING AN LT1469 REF FEEDBACK RANGE Logic Threshold vs Supply Voltage 2 1.75 1.5 RISING 1.25 FALLING 1 0.75 0.5 2 Supply Current vs Logic Input Voltage 1nV•s (TYP) ...
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... Data Bits. These I/O pins set and read back the DAC code. OUT2 D0 is the LSB. NC (Pins 22-27): LTC2751-12 Only. No Connection. NC (Pins 24-27): LTC2751-14 Only. No Connection. NC (Pins 26, 27): LTC2751-16 Only. No Connection. ⎯ (Pin 28): Data/Span Select. This pin is used to select activation of the data or span I/O pins (D0 to D15 S2, respectively), along with their respective dedicated registers, for write or read operations ...
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... LTC2751 PIN FUNCTIONS S1 (Pin 33): Span I/O Bit 1. Pins S0, S1 and S2 are used to program and to read back the output range of the DAC. R (Pin 34): DAC Offset Adjust. Nominal input range is VOS ±5V. If not used, R should be shorted to I VOS I (Pin 35): DAC current output; normally tied to the OUT1 negative input of the I/V converter amplifi ...
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... CLR 17 MSPAN REF R COM OFS R1 R2 16-BIT DAC WITH SPAN SELECT 3 16 DAC DAC CONTROL REGISTER REGISTER LOGIC 3 16 INPUT INPUT REGISTER REGISTER I/O I/O PORT PORT 32, 33 6-14, 19-25 SPAN I/O DATA I/O S2-S0 D15-D0 LTC2751 OUT1 35 I OUT2 4 2751 BD 11 2751f ...
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... Digital Section The LTC2751 family has four internal interface registers (see Block Diagram). Two of these—one input and one DAC register—are dedicated to the data I/O port, and two to the span I/O port. Each port is thus double-buffered. The double-buffered feature provides the capability to simulta- neously update the span and code, which allows smooth voltage transitions when changing output ranges ...
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... Read DAC Register X = Don’t Care Manual Span Confi guration Multiple output ranges are not needed in some applications. To confi gure the LTC2751 for single-span operation, tie the and the ⎯ pin to GND. The desired MSPAN pin output range is then specifi the span I/O pins (S0, S1 ...
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... The I/O pins comprise two ports, data and span. The data I/O port consists of pins D0-D11, D0-D13 or D0-D15 (LTC2751-12, LTC2751-14 or LTC2751-16, respectively). The span I/O port consists of pins S0, S1 and S2 for all parts. Each I/O port has one dedicated input register and one dedicated DAC register ...
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... INPUT HI-Z DATA I/O OUTPUT UPD D/S READ 010 8000 011 C000 H = 2.5V) using readback to check the contents of the input OUT HI-Z H 8000 H INPUT REGISTER DAC REGISTER LTC2751 H UPDATE (±5V RANGE 0V) OUT 2751 TD03 4000 H UPDATE (5V) UPDATE (–5V) 2751 TD04 0000 H UPDATE (2.5V) 2751 TD05 2751f 15 ...
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... LTC2751-14 and the LTC2751-12. However, the results obtained from Tables 3 and 4 are in 16-bit LSBs. Divide these results by 4 (LTC2751-14) and 16 (LTC2751-12) to obtain the correct LSB sizing. Table 5 contains a partial list of LTC precision op amps recommended for use with the LTC2751. The easy-to-use ...
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... Op amp offset will contribute mostly to output offset and gain error and has minimal effect on INL and DNL. For the LTC2751-16, a 250µV op amp offset will cause about 0.8LSB INL degradation and 0.2LSB DNL degradation with a 5V reference. For the LTC2751 programmed in 5V unipolar mode, the same 250µ ...
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... GND with a Force/Sense Amplifi er OUT2 16-Bit DAC with Software-Selectable Ranges 5 – 7 1/2 LT1469 6 C2** + 150pF REF R R COM OFS FB R2 LTC2751-16 I OUT1 16-BIT DAC WITH SPAN SELECT I OUT2 GND VOS 3, 33, 32 6-14, 19-25 34 SPAN I/O DATA I/O S2-S0 D15-D0 2 – 6 ...
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... DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LTC2751 0.70 ± 0.05 PACKAGE OUTLINE PIN 1 NOTCH R = 0.30 TYP OR 3.15 ± ...
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... C22 0.1 F 0.001 F GND GND D15 REF DD IN COM 7 D14 8 D13 9 D12 10 D11 11 D10 LTC2751- D/S READ UPD WR CLR D/S READ UPD WR CLR COMMENTS 1ppm/°C Maximum Drift 0.05% Maximum Tolerance, 1ppm 0.1Hz to 10Hz Noise 90MHz GBW, 22V/µ ...