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
The AD7821 is a high speed, 8-bit, sampling, Analog-to-digital converter that offers improved performance over the popular AD7820. It offers a conversion time of 660 ns (versus 1.36 µs for the AD7820) and 100 kHz signal bandwidth (versus 6.4 kHz). The sampling instant is better defined and occurs on the falling edge of WR or RD. The provision of a VSS pin (Pin 19) allows the part to operate from ±5 V supplies and to digitize bipolar input signals. Alternatively, for unipolar inputs, the VSS pin can be grounded and the AD7821 will operate from a single +5 V supply, like the AD7820.
Fast Conversion Time: 660 ns Max
100 kHz Track-and-Hold Function
1 MHz Sample Rate
Unipolar and Bipolar Input Ranges
Ratiometric Reference Inputs
No External Clock
Extended Temperature Range Operation
Skinny 20-Lead DlPs, SOIC, and 20-Terminal Surface-Mount Packages
GENERAL DESCRIPTION The AD7820 is a high speed, microprocessor-compatible 8-bit Analog-to digital converter which technique to achieve a conversion time of 1.36μs.
FEATURES Fast Conversion Time: 1.36 μs max Built-In Track-and-Hold Function No Missed Codes No User Trims Required Single +5V Supply Ratiometric Operation No External Clock Extended Temperature Range Operation Skinny 20-Pin DlP, SOIC, and 20-Terminal Surface-Mount Packages
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
The HI5810 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 HI5810 features a built-in track and hold. The conversion time is as low as 10µs with a 5V supply.
Description The HI5810 is a fast, low power, 12-bit, successiveapproximation, 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 HI5810 features a built-in track and hold. The conversion time is as low as 10µs with a 5V supply.
GENERAL DESCRIPTION The AD7890 is an eight-channel 12-bit data acquisition system. The part contains an input Multiplexer, an on-chip Track/Hold amplifier, a high-speed 12-bit ADC, a +2.5 V reference and a high speed, Serial interface. The part operates from a single +5 V supply and accepts an Analog input range of ±10 V (AD7890-10), 0 V to +4.096 V (AD7890-4) and 0 V to +2.5 V (AD7890-2).
FEATURES Fast 12-Bit ADC with 5.9 μs Conversion Time Eight Single-Ended Analog Input Channels Selection of Input Ranges: ±10 V for AD7890-10 0 V to +4.096 V for AD7890-4 0 V to +2.5 V for AD7890-2 Allows Separate Access to Multiplexer and ADC On-Chip Track/Hold Amplifier On-Chip Reference High Speed, Flexible, Serial Interface Single Supply, Low Power Operation (50 mW max) Power-Down Mode (75 μW typ)
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.