Overview
The AD7841BSZ is an octal 14-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device integrates eight 14-bit DACs on a single monolithic chip, offering a full-scale output voltage range of ±10 V from reference voltages of ±5 V. The AD7841BSZ is designed for high precision and reliability, making it suitable for various applications requiring multiple analog output channels.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Number of Bits | 14 | - | - |
| Number of D/A Converters | 8 | - | - |
| Output Type | Voltage - Buffered | - | - |
| Settling Time | 31 µs (Typ) | - | Full-Scale Change to ±1/2 LSB |
| Integral Nonlinearity (INL) | ±2 LSB (Max) | - | VCC = 5 V ± 5%; VDD = 15 V ± 10%; VSS = –15 V ± 10% |
| Differential Nonlinearity (DNL) | ±1 LSB (Max) | - | Guaranteed Monotonic Over Temperature for All Grades |
| Voltage - Supply, Analog | ±13.5 V ~ 16.5 V | - | - |
| Voltage - Supply, Digital | 5 V | - | - |
| Operating Temperature | -40°C ~ 85°C | - | - |
| Package | 44-QFP | - | - |
Key Features
- Octal 14-Bit DACs: Eight 14-bit DACs integrated on a single chip.
- Output Voltage Range: Full-scale output voltage range of ±10 V from reference voltages of ±5 V.
- Buffered Outputs: Each DAC output is buffered with a gain-of-two amplifier, allowing for external DAC offset voltage insertion.
- Clear Function: Asynchronous clear input to set all analog outputs to a user-defined voltage.
- Parallel Data Interface: Accepts 14-bit parallel loaded data from the external bus.
- Simultaneous Update: All outputs can be updated simultaneously by taking the LDAC input low.
- High Accuracy: Relative accuracy of ±2 LSB max and differential nonlinearity of ±1 LSB max.
- Low DC Crosstalk and Output Impedance: DC crosstalk of 120 µV max and DC output impedance of 0.5 ohm max.
Applications
- Automatic Test Equipment: Ideal for precision testing and measurement.
- Process Control: Used in control systems requiring multiple analog output channels.
- General Purpose Instrumentation: Suitable for various instrumentation applications needing high precision and reliability.
Q & A
- What is the output voltage range of the AD7841BSZ?
The AD7841BSZ has a full-scale output voltage range of ±10 V from reference voltages of ±5 V.
- How many DACs are integrated on the AD7841BSZ chip?
The AD7841BSZ integrates eight 14-bit DACs on a single chip.
- What is the settling time of the AD7841BSZ?
The settling time is typically 31 µs for a full-scale change to ±1/2 LSB.
- What is the operating temperature range of the AD7841BSZ?
The operating temperature range is from -40°C to 85°C.
- Can all outputs be updated simultaneously on the AD7841BSZ?
- What is the package type of the AD7841BSZ?
The AD7841BSZ is available in a 44-lead MQFP package.
- What is the relative accuracy of the AD7841BSZ?
The relative accuracy is ±2 LSB max.
- How does the clear function work on the AD7841BSZ?
The clear function sets all analog outputs to a user-defined voltage when the CLR input is brought low.
- What is the typical DC crosstalk of the AD7841BSZ?
The typical DC crosstalk is 120 µV max.
- What is the DC output impedance of the AD7841BSZ?
The DC output impedance is 0.5 ohm max.
