ADC08161 National Semiconductor, ADC08161 Datasheet
ADC08161
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ADC08161 Summary of contents
Page 1
... ADC08161 CMOS A/D converter offers 500 ns conver- sion time, internal sample-and-hold (S/H), a 2.5V bandgap reference, and dissipates only 100 mW of power. The ADC08161 performs an 8-bit conversion with a 2-bit voltage estimator that generates the 2 MSBs and two low-resolution (3-bit) flashes that generate the 6 LBSs. ...
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... REF− an output code of 0, and an input voltage greater than V − 1.5 LSB produces an REF+ output code of 255. For the ADC08161 an input voltage that + exceeds V by more than 100 be- low GND by more than 100 mV will create conversion errors. This is the active low Chip Select input. A logic low signal applied to this input pin en- ables the RD and WR inputs ...
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... Phase, 60 sec.) (Infrared, 15 sec.) Storage Temperature 6V ESD Susceptibility (Note 6) + −0. 0.3V + −0. 0.3V Operating Ratings Temperature Range ADC08161CIWM Supply Voltage 5V 5V, and V = GND unless otherwise specified. Bold- REF+ REF− 25˚C. ; all other limits T MAX A J Conditions ...
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AC Electrical Characteristics + The following specifications apply for limits apply for MIN MAX Symbol Parameter t Write Time WR t Read Time (Time from Rising Edge ...
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DC Electrical Characteristics + The following specifications apply for 25˚C. all other limits Symbol Parameter V Logic “0” Input Voltage V IL CS, WR, RD, A0, A1, A2 Pins Mode Pin I Logic ...
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Bandgap Reference Electrical Characteristics Note 2: All voltages are measured with respect to the GND pin, unless otherwise specified. Note 3: When the input voltage ( any pin exceeds the power supply voltage (V IN limited to 5 ...
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TRI-STATE Test Circuit and Waveforms FIGURE 1. RD Mode (Mode Pin is Low DS011149 DS011149 ...
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TRI-STATE Test Circuit and Waveforms FIGURE 2. WR-RD Mode with t FIGURE 3. WR-RD Mode with t www.national.com (Continued) DS011149-7 t (Mode Pin is High) RD INTL DS011149-8 > t (Mode Pin is High) RD INTL 8 ...
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TRI-STATE Test Circuit and Waveforms FIGURE 4. WR-RD Mode Reduced Interface System Connection with (Mode Pin is High) FIGURE 5. RD Mode (Pipeline Operation); t Typical Performance Characteristics t vs Temperature CRD DS011149-23 (Continued) must ...
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Typical Performance Characteristics Supply Current vs Temperature DS011149-26 Output Current vs Temperature DS011149-29 www.national.com (Continued) Reference Output Voltage vs Temperature DS011149-27 10 Logic Threshold vs Temperature DS011149-28 ...
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... Application Information FIGURE 6. Block Diagram of the ADC08161 Multi-Step Flash Architecture 1.0 FUNCTIONAL DESCRIPTION The ADC08161 performs an 8-bit analog-to-digital conver- sion using a multi-step flash technique. The first flash gener- ates the five most significant bits (MSBs) and the second flash generates the three least significant bits (LSBs). Figure 6 shows the major functional blocks of the ADC08161 multi-step flash converter ...
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... The data will be valid dur- ing the third RD pulse that occurs after the first conversion. 2.3 WR-RD (WR then RD ) Mode The ADC08161 is in the WR-RD mode with the MODE pin tied high. A conversion starts on the rising edge of the WR signal. There are two options for reading the output data ...
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... LAYOUT, GROUNDS, AND BYPASSING In order to ensure fast, accurate conversions from the ADC08161 necessary to use appropriate circuit board layout techniques. Ideally, the analog-to-digital converter’s ground reference should be low impedance and free of noise from other parts of the system ...
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Application Information Internal Reference 2.5V Full-Scale (Standard Application) DS011149-19 Note: Bypass capacitors consist of a 0.1 µF ceramic in parallel with a 10 µF bead tantalum, unless otherwise specified. FIGURE 9. Typical Connection. Note the multiple bypass capacitors on the ...
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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. Wide-Body Small-Outline Order Number ADC08161CIWM NS Package Number M20B 2. A critical component is any component of a life ...