The ML2252 and ML2259 combine an 8-Bit A/D converter, 2- or 8-channel analog Multiplexer, and a
microprocessor Compatible 8-Bit parallel interface and control logic in a single monolithic CMOS device.
■Conversion time (fCLK= 1.46MHz); 6.6µs
■Total unadjusted error; ±1/2LSB or ±1LSB
■No missing codes
■Sample and hold; 390ns acquisition
■Capable of digitizing a 5V, 50kHz sinewave
■2- or 8-channel input Multiplexer
■0V 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
■Analog input protection; 25mA per input min
■Continuous conversion mode
■Low power dissipation; 15mW max
■TTL and CMOS Compatible digital inputs and outputs
GENERAL DESCRIPTION The ML2258 combines an 8-Bit A/D converter, 8-channel analog Multiplexer, and a microprocessor Compatible 8-Bit parallel interface and control logic in a single monolithic device.
FEATURES ■ Conversion time 6.6µs ■ Total unadjusted error ±1/2LSB or ±1LSB ■ No missing codes ■ Sample and hold 390ns acquisition ■ Capable of digitizing a 5V, 50kHz sine wave ■ 8-input Multiplexer ■ 0V 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 ■ Analog input protection 25mA per input min ■ Low power dissipation 3mA max ■ TTL and CMOS Compatible digital inputs and outputs ■ Standard 28-pin DIP or surface mount PCC ■ Superior pin Compatible replacement for ADC0808 and ADC0809
The ADC080X family are CMOS 8-Bit, successive-approximation A/D Converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs. These Converters appear to the processor as memory locations or I/O ports, and hence no interfacing logic is required.
Features • 80C48 and 80C80/85 Bus Compatible - No Interfacing Logic Required • Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . <100s • Easy Interface to Most Microprocessors • Will Operate in a “Stand Alone” Mode • Differential Analog Voltage Inputs • Works with Bandgap Voltage References • TTL Compatible Inputs and Outputs • On-Chip Clock Generator • Analog Voltage Input Range (Single + 5V Supply) . . . . . . . . . . . . . . . . . . . . . . 0V to 5V • No Zero-Adjust Required • 80C48 and 80C80/85 Bus Compatible - No Interfacing Logic Required
Description The CS5505/6/7/8 are a family of low power CMOS A/D Converters which are ideal for measuring low-frequency signals representing physical, chemical, and biological processes. The CS5507/8 have single-channel differential analog and reference inputs while the CS5505/6 have four pseudo-differential analog input channels. The CS5505/7 have a 16-bit output word. The CS5506/8 have a 20-bit output word.The CS5505/6/7/8 sample upon command up to 100 Sps. The on-chip digital filter offers superior line rejection at 50 and 60 Hz when the device is operated from a 32.768 kHz clock (output word rate = 20 Sps). The CS5505/6/7/8 include on-chip self-calibration circuitry which can be initiated at any time or temperature to ensure minimum offset and full-scale errors. The CS5505/6/7/8 serial port offers two general-purpose modes for the direct interface to shift registers or synchronous serial ports of industry-standard microcontrollers.
Features ● Very Low Power Consumption - Single supply +5 V operation: 1.7 mW - Dual supply ±5 V operation: 3.2 mW ● Offers superior performance to VFCs and multi-slope integrating ADCs ● Differential Inputs - Single Channel (CS5507/8) and Four-Channel (CS5505/6) pseudo-differential versions ● Either 5 V or 3.3 V Digital Interface ● Linearity Error: - ±0.0015% FS (16-bit CS5505/7) - ±0.0007% FS (20-bit CS5506/8) ● Output update rates up to 100 Sps ● Flexible Serial Port ● Pin-Selectable Unipolar/Bipolar Ranges
Overview The LC8390M combines two-channel D/A and A/D Converters in a single chip
Features • A/D Converter Block — Quadratic ∆Σ modulation — 16-bits resolution — Built-in aliasing noise prevention digital filter — A/D Converters for two channels built in (synchronized input when standard audio output is used) — S/N = 80 dB, THD + N = 0.025% (typical, A compensation filter used) — Digital output: MSB first, forward packed, bit clock rates of 32, 48, and 64 Fs — External integrator used. • D/A Converter Block — 16× oversampling quadratic noise shaper + PWM — 16-bits resolution — D/A Converters for two channels built in (synchronized output) — S/N = 85 dB, THD + N = 0.03% (typical, A compensation filter used) — Digital input: MSB first, backward packed, bit clock rates of 32, 48, and 64 Fs — Digital oversampling filters are not built in. • Built-in double-buffering serial I/O circuits. (These circuits support both standard audio I/O and I/O with arbitrary timing.) • Sampling frequencies of 48, 44.1, and 32 kHz • Master clock: 512 Fs (24.576 MHz when fs = 48 kHz) or 384 Fs Notes: Only the A/D Converters operate when 384 Fs is selected as the master clock. The D/A Converters do not operate in this mode. Since the analog I/F and analog power supply pins are more susceptible to damage from static electricity than the other pins, extra care is required. Analog I/F pins: DZOUTL, ADL2, ADLVSS, ADLVDD, ADL3, DZOUTR, ADR2, ADRVSS, ADRVDD, ADR3, DALVSS, PWML, DALVDD, DARVSS, PWMR, DARVDD • Package: 30-pin MFP • Power supply: 5 V, single voltage, CMOS
8-Channel, 16-Bit, High Precision, Sigma-Delta A/D Sub-System
The HI7188 is an easy-to-use 8-Channel sigma-delta programmable A/D subsystem ideal for low frequency physical and electrical measurements in scientific, medical, and industrial applications. The subsystem has complete on-chip capabilities to support moving the intelligence from the system controller and towards the sensors. This gives the designer faster and more flexible configurability without the traditional drawbacks of low throughput per channel, higher power or cost per channel. Extreme design complexity and excessive software overhead is eliminated.
Features • Fully Differential 8-Channel Multiplexer and Reference • Automatic Channel Switching with Zero Latency • 240 Conversions Per Second Per Channel • 16-Bit Resolution with No Missing Codes • 0.0015% Integral Non-Linearity • Fully Software Configurable - 120dB Rejection of 60/50Hz Line Noise - Channel Conversion Order and Number of Active Channels - True Bipolar or Unipolar Input Range Per Channel - PGIA Gain Per Channel - 2-Wire or 3-Wire Interface • Chopper Stabilized PGIA with Gains of 1 to 8 • Serial Data I/O Interface, SPI Compatible • 3 Point System Calibration • Low Power Dissipation of 30mW (Typ)
Applications • Multi-Channel Industrial Process Controls • Weight Scales • Medical Patient Monitoring • Laboratory Instrumentation • Gas Monitoring System • Reference Literature - AN9504 “A Brief Introduction to Sigma Delta Conversion” - TB329 “Intersil Sigma-Delta Calibration Techniques” - AN9518 “Using the HI7188 Evaluation Kit” - AN9610 “Interfacing the HI7188 to a Microcontroller” - AN9538 “Using the HI7188 Serial Interface
The ADC080X family are CMOS 8-Bit, successive approximation A/D Converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs. These Converters appear to the processor as memory locations or I/O ports, and hence no interfacing logic is required.
Features • 80C48 and 80C80/85 Bus Compatible - No Interfacing Logic Required • Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . <100µs • Easy Interface to Most Microprocessors • Will Operate in a “Stand Alone” Mode • Differential Analog Voltage Inputs • Works with Bandgap Voltage References • TTL Compatible Inputs and Outputs • On-Chip Clock Generator • Analog Voltage Input Range (Single + 5V Supply) . . . . . . . . . . . . . . . . . . . . . . 0V to 5V • No Zero-Adjust Required • 80C48 and 80C80/85 Bus Compatible - No Interfacing Logic Required
Description The ICL7104, combined with the ICL8052 or ICL8068, forms a member of Intersil’ high performance A/D converter family. The ICL7104-16, performs the analog switching and digital function for a 16-bit binary A/D converter, with full three-state output, UART handshake capability, and other outputs for easy interfacing. The ICL7014-14 is a 14-bit version. The analog section, as with all Intersil’ integrating Converters, provides fully precise Auto-Zero, Auto-Polarity (including ±0 null indication), single reference operation, very high input impedance, true input integration over a constant period for maximum EMI rejection, fully rationmetric operation, over-range indication, and a medium quality built-in reference. The chip pair also offers optional input buffer gain for high sensitivity applications, a built-in clock oscillator, and output signals for providing an external Auto-Zero capability in preconditioning circuitry, synchronizing external Multiplexers, etc.
Features • 16-Bit/14-Bit Binary Three-State Latched Outputs Plus Polarity and Overrange • Ideally Suited for Interface to UARTs and Microprocessors • Conversion on Demand or Continuously • Guaranteed Zero Reading for 0V Input • True Polarity at Zero Count for Precise Null Detection • Single Reference Voltage for True Ratiometric Operation • Onboard Clock and Reference • Auto-Zero, Auto-Polarity • Accuracy Guaranteed to 1 Count • All Outputs TTL Compatible • ±4V Analog Input Range • Status Signal Available for External Sync, A/Z in Preamp, Etc.