LTC2755CUP-12#TRPBF Linear Technology, LTC2755CUP-12#TRPBF Datasheet
LTC2755CUP-12#TRPBF
Specifications of LTC2755CUP-12#TRPBF
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LTC2755CUP-12#TRPBF Summary of contents
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... The parts are specifi ed over commercial and industrial temperature ranges LTC and LTM are registered trademarks of Linear Technology Corporation. SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7034735, 7256721. ...
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... LTC2755-12 UP PACKAGE 64-LEAD (9mm × 9mm) PLASTIC QFN T = 125°C, θ = 28°C/W JMAX JA EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC2755CUP-12#PBF LTC2755CUP-12#TRPBF LTC2755IUP-12#PBF LTC2755IUP-12#TRPBF LTC2755CUP-14#PBF LTC2755CUP-14#TRPBF LTC2755IUP-14#PBF LTC2755IUP-14#TRPBF LTC2755BCUP-16#PBF LTC2755BCUP-16#TRPBF LTC2755BIUP-16#PBF LTC2755BIUP-16#TRPBF LTC2755ACUP-16#PBF ...
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ELECTRICAL CHARACTERISTICS specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T SYMBOL PARAMETER CONDITIONS Static Performance Resolution Monotonicity DNL Differential Nonlinearity INL Integral Nonlinearity GE Gain Error All Output Ranges GE Gain Error ...
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LTC2755 ELECTRICAL CHARACTERISTICS specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Power Supply V Supply Voltage DD I Supply Current Digital Inputs V Digital Input High Voltage ...
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TIMING CHARACTERISTICS otherwise specifi cations are 25°C. A SYMBOL PARAMETER t UPD Valid to I/O Propagation Delay 17 D/S Valid to READ Rising Edge READ Rising Edge to UPD Rising Edge 19 t UPD ...
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LTC2755 TIMING CHARACTERISTICS otherwise specifi cations are 25°C. A SYMBOL PARAMETER V = 2. READ Falling Edge to UPD Rising Edge 22 t I/O Bus Hi-Z to Read Rising Edge 23 t Read ...
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TYPICAL PERFORMANCE CHARACTERISTICS LTC2755-16 DNL vs Temperature 1 0 REF ±10V RANGE 0.6 0.4 0.2 +DNL 0.0 –DNL –0.2 –0.4 –0.6 –0.8 –1.0 –40 – TEMPERATURE (°C) 2755 ...
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LTC2755 TYPICAL PERFORMANCE CHARACTERISTICS LTC2755-14 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 LTC2755-12 Integral Nonlinearity (INL) 1 ...
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TYPICAL PERFORMANCE CHARACTERISTICS LTC2755-12, LTC2755-14, LTC2755-16 Midscale Glitch UPD 5V/DIV UNIPOLAR 5V OUTPUT RANGE LT1469 OUTPUT AMPLIFIER 1nV • s TYP C FEEDBACK = 27pF 5V, V REF = 5V OUT 2mV/DIV 500ns/DIV RISING MAJOR CARRY ...
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LTC2755 PIN FUNCTIONS R (Pin 25): DAC D Offset Adjust. Nominal input range VOSD is ±5V. The impedance looking into this pin ground. If not used, tie R to ground. VOSD R (Pin 26): DAC C Offset ...
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PIN FUNCTIONS READ (Pin 49): Read Pin. When READ is asserted high, the data I/O (D0-D15) or span I/O (S0-S2) port outputs the contents of the selected register (see Table 1). For single- span operation, readback of the span I/O ...
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LTC2755 BLOCK DIAGRAM LTC2755-16 DATA I/O 4-12, 36-42 PORT SPAN I/O 1, 52, 47 PORT A2 16 DAC A1 17 ADDRESS DATA INPUT DATA DAC ...
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TIMING DIAGRAMS WR DATA/SPAN I/O INPUT UPD D/S ADDRESS CLR READ WR DATA/SPAN I/O INPUT DATA/SPAN I/O OUTPUT ADDRESS A2-A0 UPD D/S Write, Update and Clear Timing VALID ...
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LTC2755 OPERATION Output Ranges The LTC2755 is a quad current-output, parallel-input precision multiplying DAC with selectable output ranges. Ranges can either be programmed in software for maximum fl exibility, or hardwired through pin-strapping for greatest ease of use. Two unipolar ...
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OPERATION These devices also have a power-on reset that initializes all DACs any output range. The DACs power up OUT in the 0V-5V range if the part is in SoftSpan confi guration; for manual span ...
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LTC2755 OPERATION System Offset Adjustment Many systems require compensation for overall system offset. The R offset adjustment pins are provided for VOSX this purpose. For noise immunity and ease of adjustment, the control voltage is attenuated to the DAC output: ...
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OPERATION—EXAMPLES 1. Load ±5V range with the output at 0V. Note that since span and code are updated together, the output, if started at 0V, will stay there. The 16-Bit DAC code is shown in hex for compactness. WR SPAN ...
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LTC2755 APPLICATIONS INFORMATION Op Amp Selection Because of the extremely high accuracy of the 16-bit LTC2755-16, careful thought should be given to op amp selection in order to achieve the exceptional performance of which the part is capable. Fortunately, the ...
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APPLICATIONS INFORMATION Op amp offset will contribute mostly to output offset and gain error, and has minimal effect on INL and DNL. For example, for the LTC2755-16 with a 5V reference in 5V unipolar mode, a 250μV op amp offset ...
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LTC2755 APPLICATIONS INFORMATION Grounding As with any high resolution converter, clean grounding is important. A low impedance analog ground plane and star grounding techniques should be used the star ground with as low a resistance as possible. When ...
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APPLICATIONS INFORMATION Figure 3. LTC2755 Evaluation Board DC1112. Layer 1, Top Layer. Figure 4. LTC2755 Evaluation Board DC1112. Layer 2, GND Plane. LTC2755 2755 F03 2755 F04 2755f 21 ...
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LTC2755 TYPICAL APPLICATIONS Figure 5. LTC2755 Evaluation Board DC1112. Layer 3, Power Traces. Figure 6. LTC2755 Evaluation Board DC1112. Layer 4, Bottom Layer. 22 2755 F05 2755 F06 2755f ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 6. DRAWING NOT TO SCALE 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UP Package 64-Lead Plastic QFN (9mm × ...
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... I OUT1D IC3A LT1469 OUT2D 25 – VOSD REFC R R REFD R R OFSC FBC OFSD FBD C21 001 7 REF2 LT 0308 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 7 V OUTA C2 30pF 1 V OUTB 7 V OUTC C1 30pF 1 V OUTD 2755 TA03 2755f ...