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Zakładka z wyszukiwarką danych komponentów |
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ML2264CCR Arkusz danych(PDF) 1 Page - Micro Linear Corporation |
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ML2264CCR Arkusz danych(HTML) 1 Page - Micro Linear Corporation |
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1 / 17 page  1 May 1997 ML2264* 4-Channel High-Speed 8-Bit A/D Converter with T/H (S/H) GENERAL DESCRIPTION The ML2264 is a high-speed, µP compatible, 4-channel 8-bit A/D converter with a conversion time of 680ns over the operating temperature range and supply voltage tolerance. The ML2264 operates from a single 5V supply and has an analog input range from GND to VCC. The ML2264 has two different pin selectable modes. The T/H mode has an internal track and hold. The S/H mode has a true internal sample and hold and can digitize 0 to 5V sinusoidal signals as high as 500kHz. The ML2264 digital interface has been designed so that the device appears as a memory location or I/O port to a µP. Analog input channels are selected by the latched and decoded multiplexer address inputs. The ML2264 is an enhanced, pin compatible second source for the industry standard AD7824. The ML2264 enhancements are faster conversion time, parameters guaranteed over the supply tolerance and temperature range, improved digital interface timing, superior power supply rejection, and better latchup immunity on analog inputs. FEATURES s Conversion time, WR-RD mode over temperature and supply voltage tolerance Track & Hold Mode ................................. 830ns max Sample & Hold Mode .............................. 700ns max s Total unadjusted error ..................... ±1/2 LSB or ±1 LSB s Capable of digitizing a 5V, 250kHz sine wave s 4-analog input channels s No missing codes s 0V to 5V analog input range with single 5V power supply s No zero or full scale adjust required s Analog input protection ............................... 25mA min s Operates ratiometrically or with up to 5V voltage reference s No external clock required s Power-on reset circuitry s Low power ....................................................... 100mW s Narrow 24-pin DIP, SOIC, or SSOP s Superior pin compatible replacement for AD7824 BLOCK DIAGRAM PIN CONNECTIONS A IN 1 A IN 2 A IN 3 A IN 4 4-CH MUX ADDRESS LATCH DECODE A0 A1 TIMING & CONTROL INT CS WR/RDY RD SH/TH MODE 4-BIT FLASH A/D (MSB) VCC +VREF –VREF GND SH/TH Σ + SAMPLE & HOLD 4-BIT D/A – 4-BIT FLASH A/D (LSB) –VREF +VREF 16 –VREF 16 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DECODE LOGIC, LATCH & THREE STATE OUTPUT BUFFER +VREF –VREF +VREF TOP VIEW A IN 4 A IN 3 A IN 2 A IN 1 MODE DB0 DB1 DB2 DB3 RD INT GND VCC SH/TH A0 A1 DB7 DB6 DB5 DB4 CS WR/RDY +VREF –VREF 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 A IN 4 A IN 3 A IN 2 A IN 1 MODE DB0 DB1 DB2 DB3 RD INT GND VCC SH/TH A0 A1 DB7 DB6 DB5 DB4 CS WR/RDY +VREF –VREF 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 TOP VIEW 24-Pin DIP 24-Pin SOIC 24-Pin SSOP *This Part Is End Of Life As Of August 1, 2000 |
Podobny numer części - ML2264CCR |
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Podobny opis - ML2264CCR |
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