GENERAL DESCRIPTION The ML2280 and ML2283 are 8-Bit successive approximation A/D Converters with Serial I/O and configurable input multiplexers with up to 4 input channels. All errors of the sample-and-hold incorporated on the ML2280 and ML2283 are accounted for in the analog-to-digital Converters accuracy specification.
FEATURES ■ Conversion time: 6µs ■ ML2280 capable of digitizing a 5V, 40kHz sine wave ■ Total unadjusted error with external reference: ±1/2LSB or ±1LSB ■ Sample-and-hold: 375ns acquisition ■ 0 to 5V analog input range with single 5V power supply ■ 2.5V reference provides 0 to 5V analog input range ■ No zero- or full-scale adjust required ■ Low power: 12.5mW MAX ■ Analog input protection: 25mA (min) per input ■ Differential analog voltage inputs (ML2280) ■ Programmable multiplexer with differential or single ended analog inputs (ML2283) ■ 0.3" width 8- or 14-pin DIP, or 8-Pin SOIC (ML2280) ■ Superior pin-compatible replacement for ADC0833
DESCRIPTION The LTC®1096L/LTC1098L are 3V micropower, 8-Bit successive approximation sampling A/D Converters. They typically draw only 40µA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. They are packaged in 8-pin SO packages and operate on a 3V supply. These 8- bit, switched capacitor, successive approximation ADCs include a sample-and-hold. The LTC1096L has a single differential analog input. The LTC1098L offers a software selectable 2-channel multiplexed input.
FEATURES ■ Specified at 2.65V Minimum Supply ■ Maximum Supply Current: 80µA ■ Auto Shutdown to 1nA ■ 8-Pin SO Package ■ On-Chip Sample-and-Hold ■ Conversion Time: 32µs ■ Sample Rates: 16.5ksps ■ I/O Compatible with SPI, MICROWIRETM, etc.
APPLICATIONS ■ Battery-Operated Systems ■ Remote Data Acquisition ■ Isolated Data Acquisition ■ Battery Monitoring ■ Temperature Measurement
DESCRIPTION By using a half-flash conversion technique, the 8-Bit ADC0820 CMOS A/D offers a 1.5µs conversion time while dissipating a maximum 75mW of power. The half-flash technique consists of 31 comparators, a most significant 4-bit ADC and a least significant 4-bit ADC. The input to the ADC0820 is tracked and held by the input sampling circuitry, eliminating the need for an external sample-and-hold for signals slewing at less than 100mV/µs. For ease of interface to microprocessors, the ADC0820 has been designed to appear as a memory location or I/O port without the need for external interfacing logic.
FEATURES • Built-in track-and-hold function • No missing codes • No external clocking • Single supply—5VDC • Easy interface to all microprocessors, or operates stand-alone • Latched 3-State outputs • Logic inputs and outputs meet both MOS and TTL voltage level specifications • Operates ratiometrically or with any reference value equal to or less than VDD • 0V to 5V analog input voltage range with single 5V supply • No zero- or full-scale adjust required • Overflow output available for cascading • 0.3″ standard width 20-pin DIP
APPLICATIONS • Microprocessor-based monitoring and control systems • Transducer/µP interface • Process control • Logic analyzers • Test and measurement
GENERAL DESCRIPTION The ML2281 family are 8-Bit successive approximation A/D Converters with Serial I/O and configurable input multiplexers with up to 8 input channels. All errors of the sample-and-hold, incorporated on the ML2281 family are accounted for in the analog-to-digital Converters accuracy specification.
FEATURES ■ Conversion time: 6µs ■ Total unadjusted error: ±1/2LSB or ±1LSB ■ Sample-and-hold: 375ns acquisition ■ 2, 4 or 8-input multiplexer options ■ 0 to 5V analog input range with single 5V power supply ■ Operates ratiometrically or with up to 5V voltage reference ■ No zero or full-scale adjust required ■ ML2281 capable of digitizing a 5V, 40kHz sine wave ■ Low power: 12.5mW MAX ■ Superior pin compatible replacement for ADC0831, ADC0832, ADC0834, and ADC0838 ■ Analog input protection: 25mA (min) per input ■ Now in 8-Pin SOIC Package (ML2281, ML2282)
DESCRIPTION The LTC®1594L/LTC1598L are 3V micropower, 12-bit sampling A/D Converters that feature 4- and 8-channel multiplexers, respectively. They typically draw only 160µA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. The LTC1594L is available in a 16-pin SO package and the LTC1598L is packaged in a 24-pin SSOP. Both operate on a 3V supply. The 12-bit, switched-capacitor, successive approximation ADCs include a sample-and-hold.
FEATURES ■ 12-Bit Resolution on 3V Supply ■ Low Supply Current: 160µA Typ ■ Auto Shutdown to 1nA ■ Guaranteed ±3/4LSB Max DNL ■ Guaranteed 2.7V Operation (5V Versions Available: LTC1594/LTC1598) ■ Multiplexer: 4-Channel MUX (LTC1594L) 8-Channel MUX (LTC1598L) ■ Separate MUX Output and ADC Input Pins ■ MUX and ADC May Be Controlled Separately ■ Sampling Rate: 10.5ksps ■ I/O Compatible with QSPI, SPI and MICROWIRETM, etc. ■ Small Package: 16-Pin Narrow SO (LTC1594L) 24-Pin SSOP (LTC1598L)
APPLICATIONS ■ Pen Screen Digitizing ■ Battery-Operated Systems ■ Remote Data Acquisition ■ Isolated Data Acquisition ■ Battery Monitoring ■ Temperature Measurement
CMOS 20 Microsecond, 12-Bit, Sampling A/D Converter with Internal Track and Hold
The HI5812 is a fast, low power, 12-bit, successive approximation analog-to-digital converter. It can operate from a single 3V to 6V supply and typically draws just 1.9mA when operating at 5V. The HI5812 features a built-in track and hold. The conversion time is as low as 20s with a 5V supply.
The Intersil CA3310 is a fast, low power, 10-bit successive approximation analog-to-digital converter, with microprocessor-compatible outputs. It uses only a single 3V to 6V supply and typically draws just 3mA when operating at 5V. It can accept full rail-to-rail input signals, and features a built-in track and hold. The track and hold will follow high bandwidth input signals, as it has only a 100ns (typical) input time constant.
Features • CMOS Low Power (Typ) . . . . . . . . . . . . . . . . . . . . .15mW • Single Supply Voltage . . . . . . . . . . . . . . . . . . . . . 3V to 6V • Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13µs • Built-In Track and Hold • Rail-to-Rail Input Range • Latched Three-state Output Drivers • Microprocessor-Compatible Control Lines • Internal or External Clock
Applications • Fast, No-Droop, Sample and Hold • Voice Grade Digital Audio • DSP Modems • Remote Low Power Data Acquisition Systems • µP Controlled Systems
General Description The MAX120/MAX122 complete, BiCMOS, sampling 12-bit analog-to-digital Converters (ADCs) combine an on-chip Track/Hold (T/H) and a low-drift voltage reference with fast conversion speeds and low-power consumption. The T/H’s 350ns acquisition time combined with the MAX120’s 1.6µs conversion time results in throughput rates as high as 500k samples per second (ksps). Throughput rates of 333ksps are possible with the 2.6µs conversion time of the MAX122.
Features ♦ 12-Bit Resolution ♦ No Missing Codes Over Temperature ♦ 20ppm/°C -5V Internal Reference ♦ 1.6µs Conversion Time/500ksps Throughput (MAX120) ♦ 2.6µs Conversion Time/333ksps Throughput (MAX122) ♦ Low Noise and Distortion: 70dB (min) SINAD; -77dB (max) THD (MAX122) ♦ Low Power Dissipation: 210mW ♦ Separate Track/Hold Control Input ♦ Continuous-Conversion Mode Available ♦ ±5V Input Range, Overvoltage Tolerant to ±15V ♦ 24-Pin Narrow DIP, Wide SO, and SSOP Packages
Applications Digital-Signal Processing Audio and Telecom Processing Speech Recognition and Synthesis High-Speed Data Acquisition Spectrum Analysis Data Logging Systems