ADC12762CCV National Semiconductor, ADC12762CCV Datasheet
ADC12762CCV
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ADC12762CCV Summary of contents
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... When the converter is not digitizing signals, it can be placed in the Standby mode; typical power consumption in this mode is 250 µW. ADC12762 Block Diagram Ordering Information Commercial (0˚C ADC12762CCV ADC12062EVAL TRI-STATE ® registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012811 ...
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... Intermodulation Distortion www.national.com (Notes 1, 2) Soldering Information (Note 6) V Package, Infrared, 15 seconds Storage Temperature Range Maximum Junction Temperature (T −0.3V to +6V Operating Ratings −0. 0. Temperature Range 50 mA ADC12762CCV Supply Voltage Range (DV 875 mW 2000V = AV = +5V +4.096V REF+(SENSE from MIN ...
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DC Electrical Characteristics The following specifications apply for DV CC 1.4 MHz, unless otherwise specified. Boldface limits apply for T Symbol Parameter V Logical “1” Input Voltage IN(1) V Logical “0” Input Voltage IN(0) I Logical “1” Input Current IN(1) ...
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AC Electrical Characteristics The following specifications apply for DV 1.4 MHz, unless otherwise specified. Boldface limits apply for T Symbol Parameter CS Hold Time t CSH (CS High after RD High, S/H High Low) Wake-Up Time t WU ...
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TRI-STATE Test Circuit and Waveforms Typical Performance Characteristics Offset and Fullscale Error Change vs Reference Voltage DS012811-6 Digital Supply Current vs Temperature DS012811-9 (Continued) DS012811-4 Linearity Error Change vs Reference Voltage DS012811-7 Analog Supply Current vs Temperature DS012811-10 5 DS012811-5 ...
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Typical Performance Characteristics Conversion Time (t ) CONV vs Temperature DS012811-12 SINAD vs Input Frequency (ADC In) DS012811-15 SINAD vs Input Frequency (Through Mux) DS012811-18 www.national.com (Continued) EOC Delay Time (t ) EOC vs Temperature DS012811-13 SNR vs Input Frequency ...
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Typical Performance Characteristics SNR and THD vs Source Impedance DS012811-21 Timing Diagrams FIGURE 1. Interrupt Interface Timing (MODE = (Continued) SNR and THD vs Reference Voltage DS012811-22 7 DS012811-23 www.national.com ...
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Timing Diagrams (Continued) FIGURE 2. High Speed Interface Timing (MODE = FIGURE 3. CS Setup and Hold Timing for S/H, RD, and OE www.national.com DS012811-24 DS012811-25 8 ...
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Connection Diagrams Pin Descriptions AV These are the two positive analog supply CC inputs. They should always be con- nected to the same voltage source, but are brought out separately to allow for separate bypass capacitors. Each supply pin should ...
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Pin Descriptions (Continued) OE This is the active high Output Enable control input. This pin can be thought inverted version of the RD input Figure 6 ). Data output pins (see DB0–DB11 are TRI-STATE when OE is ...
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Functional Description (Continued) The resistor string near the center of the block diagram in Figure 4 generates the 6-bit and 10-bit reference voltages for the first two conversions. Each of the 16 resistors at the bot- tom of the string ...
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Applications Information THE ANALOG INPUT The analog input of the ADC12762 can be modeled as two small resistances in series with the capacitance of the input hold capacitor ( shown in Figure 7 . The S/H switch is ...
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Applications Information (Continued) switching, reducing the op amp transient response require- ments. The 100 pF capacitor should only be used with high speed op amps that are unconditionally stable driving ca- pacitive loads. Another benefit of using a high speed ...
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... REFERENCE INPUTS In addition to the fully differential V inputs used on most National Semiconductor ADCs, the ADC12762 has two sense outputs for precision control of the ladder voltage. These sense inputs compensate for errors due to IR drops between the reference source and the ladder ) = 185 ns ...
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Applications Information (Continued) FIGURE 10. Reference Ladder Force and Sense Inputs Since the current flowing through the SENSE lines is essen- tially zero, there is negligible voltage drop across resistor, so the voltage at the inverting input ...
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Applications Information POWER SUPPLY CONSIDERATIONS The ADC12762 is designed to operate from a single +5V power supply. There are two analog supply pins (AV one digital supply pin (DV ). These pins allow separate ex- CC ternal bypass capacitors for ...
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... ADC12062EVAL evaluation board. For lower power, a CMOS inverter-based crystal oscillator can be used in place DS012811-35 of the DIP crystal oscillator. See Application Note AN-340 in the National Semiconductor CMOS Logic Databook for more information on CMOS crystal oscillators. COMMON APPLICATION PITFALLS Driving inputs (analog or digital) outside power supply rails. The Absolute Maximum Ratings state that all inputs must be between GND − ...
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Applications Information 9.0 APPLICATIONS www.national.com (Continued) 2’s Complement Output DS012811-37 Ping-Ponging between V and V IN1 IN2 18 DS012811-38 ...
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Applications Information (Continued) AC Coupling Bipolar Inputs 19 DS012811-39 www.national.com ...
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... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. Plastic Leaded Chip Carrier (V) Order Number ADC12762CCV NS Package Number V44A 2. A critical component is any component of a life ...