Overview
The SMP18FSZ, produced by Analog Devices Inc., is a monolithic octal sample-and-hold integrated circuit. It features eight internal buffer amplifiers, an input multiplexer, and internal hold capacitors. Manufactured using advanced oxide isolated CMOS technology, the SMP18FSZ offers high accuracy, a low droop rate, and fast acquisition time. This component is designed for systems requiring cycled calibration or an array of control voltages, making it ideal for various applications including multiple path timing deskew, mass flow/process control systems, and medical instrumentation.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Linearity Error | - | -3 V ≤ VIN ≤ +3 V | - | 0.01% | - | % |
| Buffer Offset Voltage | VOS | TA = +25°C, VIN = 0 V | 2.5 | 10 | mV | |
| Buffer Offset Voltage | VOS | -40°C ≤ TA ≤ +85°C, VIN = 0 V | 3.5 | 20 | mV | |
| Hold Step | VHS | VIN = 0 V, TA = +25°C to +85°C | 4 | 6 | mV | |
| Supply Voltage Range | VDD to VSS | - | - | 7 to 15 V | V | |
| Operating Temperature Range | TA | - | -40°C to +85°C | - | °C |
Key Features
- High speed version with fast acquisition time (less than 2.5 microseconds for a 10-bit input signal to ±1/2 LSB)
- Low droop rate and high accuracy (typical linearity error of 0.01%)
- TTL/CMOS compatible logic inputs and internally regulated TTL supply
- Single or dual supply operation (7 to 15 volts)
- Break-before-make channel addressing and internal decoder, eliminating the need for external logic
- Available in 16-pin plastic DIP, narrow body SO-16 surface-mount SOIC package, and TSSOP-16 package
Applications
- Multiple path timing deskew for Automated Test Equipment (ATE) and memory programmers
- Mass flow/process control systems
- Multichannel data acquisition systems
- Robotics and control systems
- Medical and analytical instrumentation
- Event analysis and stage lighting control
Q & A
- What is the SMP18FSZ used for? The SMP18FSZ is used in various applications requiring sample-and-hold functions, such as multiple path timing deskew, mass flow/process control, and medical instrumentation.
- What are the key features of the SMP18FSZ? Key features include high speed, low droop rate, high accuracy, TTL/CMOS compatibility, and single or dual supply operation.
- What are the typical operating conditions for the SMP18FSZ? The SMP18FSZ operates over a temperature range of -40°C to +85°C and a supply voltage range of 7 to 15 volts.
- What packages is the SMP18FSZ available in? The SMP18FSZ is available in 16-pin plastic DIP, narrow body SO-16 surface-mount SOIC package, and TSSOP-16 package.
- How does the SMP18FSZ handle channel addressing? The SMP18FSZ features break-before-make channel addressing and an internal decoder, eliminating the need for external logic.
- What is the acquisition time of the SMP18FSZ? The SMP18FSZ can acquire a 10-bit input signal to ±1/2 LSB in less than 2.5 microseconds.
- Is the SMP18FSZ compatible with TTL and CMOS logic? Yes, the SMP18FSZ has TTL/CMOS compatible logic inputs and an internally regulated TTL supply.
- What is the linearity error of the SMP18FSZ? The SMP18FSZ has a typical linearity error of 0.01%.
- Can the SMP18FSZ be used in systems requiring calibration cycles? Yes, the SMP18FSZ is specifically designed for systems that use calibration cycles to adjust multiple system parameters.
- How does the SMP18FSZ reduce digital switching noise? The SMP18FSZ recommends physically separating the analog and digital ground traces on the circuit board to reduce digital switching noise from entering the analog circuitry.
