AD571SD/883B - 10-Bit A/D Converter | Analog Devices | Military
N.º de pieza: AD571SD/883B ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $45.32 | $45,32 |
| 10 | $41.87 | $418,70 |
| 100 | $38.12 | $3.812,00 |
| 500 | $34.56 | $17.280,00 |
| 1.000 | $31.02 | $31.020,00 |
AD571SD/883B Descripción general
An analog-to-digital converter (ADC) is an electronic component that transforms a continuous analog voltage into a discrete digital number proportional to the amplitude of the signal. The AD571SD/883B is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed and moderate resolution, making them suitable for a wide range of data acquisition systems. In the hierarchy of signal processing, the ADC sits between the analog sensor/amplifier and the digital processor, serving as the critical bridge that enables digital systems to interpret real-world analog signals.
Key features of the AD571SD/883B include a 10-bit resolution, a maximum conversion time of 25 microseconds, and a parallel digital interface for easy connection to microprocessors and digital logic. The device operates from dual supplies of +5 V and -12 V or -15 V, and includes an internal clock and reference, eliminating the need for external components. The military-grade screening (883B) ensures compliance with MIL-STD-883, providing enhanced reliability for demanding environments.
Technically, the AD571SD/883B employs a laser-trimmed thin-film resistor network and a high-speed comparator to achieve its accuracy. The device features a full-scale calibration capability, allowing users to adjust the gain and offset for precise measurements. The bipolar offset and unipolar offset pins provide flexibility in configuring the input range, while the differential nonlinearity is guaranteed to be within ±1 LSB over the entire temperature range.
Typical applications include military avionics, radar systems, industrial process control, and high-reliability data acquisition systems. The device's wide operating temperature range and hermetic ceramic package make it ideal for harsh environments where standard commercial ADCs would fail.
When designing with the AD571SD/883B, ensure that the analog input is properly buffered and that the power supplies are well-decoupled to minimize noise. The internal reference is trimmed at the factory, but external calibration may be required for absolute accuracy in critical applications.
Alternativas directas para AD571SD/883B — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
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AD571SD/883B Valores máximos y características eléctricas
| Resolución | 10 bits |
| Architecture | SAR |
| Number of Channels | 1 |
| Input Type | Single-ended |
| Input Voltage Range (Unipolar) | 0 V to +10 V |
| Input Voltage Range (Bipolar) | -5 V to +5 V |
| Conversion Time | 25 µs (max) |
| Digital Interface | Parallel |
| Supply Voltage (Positive) | +5 V |
| Supply Voltage (Negative) | -12 V or -15 V |
| Rango de temperatura de funcionamiento | -55°C to +125°C |
| Package Type | 18-pin SBDIP (Side-Brazed Ceramic DIP) |
| Screening Level | Military (883B) |
| Differential Nonlinearity | ±1 LSB (max) |
| Relative Accuracy | ±1 LSB (max) |
| Estado RoHS | unknown |
Configuración de pines de AD571SD/883B
| Pin 1 | V+ — Positive supply voltage (+5 V) |
| Pin 2 | V- — Negative supply voltage (-12 V or -15 V) |
| Pin 3 | AGND — Analog ground |
| Pin 4 | AIN — Analog input |
| Pin 5 | BIP OFF — Bipolar offset adjust |
| Pin 6 | UNI OFF — Unipolar offset adjust |
| Pin 7 | CAL — Calibration input |
| Pin 8 | CLK IN — External clock input (optional) |
| Pin 9 | CLK OUT — Clock output |
| Pin 10 | DGND — Digital ground |
| Pin 11 | DB0 (LSB) — Data bit 0 (least significant bit) |
| Pin 12 | DB1 — Data bit 1 |
| Pin 13 | DB2 — Data bit 2 |
| Pin 14 | DB3 — Data bit 3 |
| Pin 15 | DB4 — Data bit 4 |
| Pin 16 | DB5 — Data bit 5 |
| Pin 17 | DB6 — Data bit 6 |
| Pin 18 | DB7 (MSB) — Data bit 7 (most significant bit) |
Aplicaciones típicas
AD571SD/883B es adecuado para 6 aplicacións: Military Avionics, Radar Systems, Industrial Process Control, High-Reliability Data Acquisition, Test and Measurement Equipment, Medical Monitoring Systems.
Military Avionics
The AD571SD/883B's military-grade screening and wide temperature range make it ideal for avionics data acquisition systems. It converts analog sensor signals (e.g., altitude, airspeed) into digital data for flight control computers. Its 10-bit resolution and 25 µs conversion time provide sufficient accuracy and speed for real-time monitoring. The hermetic SBDIP package ensures reliability under extreme vibration and temperature variations.
Recomendado
Radar Systems
In radar signal processing, the AD571SD/883B digitizes analog IF signals for target detection and ranging. Its bipolar input range (-5 V to +5 V) accommodates AC-coupled signals, while the parallel interface allows fast data transfer to DSPs. The device's 10-bit resolution is adequate for many radar applications, and its military temperature rating ensures operation in harsh environments.
Recomendado
Industrial Process Control
The AD571SD/883B is used in industrial process control systems to digitize analog signals from temperature, pressure, and flow sensors. Its unipolar input range (0-10 V) directly interfaces with many industrial transmitters. The device's 10-bit resolution provides adequate precision for control loops, and its robust construction withstands industrial environments. The internal reference simplifies design, reducing external component count.
Recomendado
High-Reliability Data Acquisition
For aerospace and defense data acquisition systems, the AD571SD/883B offers proven reliability and long-term availability. Its MIL-STD-883 screening ensures consistent performance, and the parallel interface simplifies integration with legacy digital systems. The device's 10-bit resolution and 25 µs conversion time are suitable for many telemetry and monitoring applications.
Recomendado
Test and Measurement Equipment
The AD571SD/883B is employed in benchtop and portable test instruments, such as digital multimeters and data loggers, to convert analog measurements into digital readings. Its bipolar input range allows measurement of both positive and negative voltages, and the parallel output simplifies interface to microcontrollers. The device's accuracy and stability over temperature make it suitable for calibration-grade instruments.
Recomendado
Medical Monitoring Systems
In medical devices, the AD571SD/883B can be used for digitizing physiological signals such as ECG and EEG. Its low power consumption and small footprint are advantageous for portable monitors. The device's 10-bit resolution is sufficient for many diagnostic applications, and its wide temperature range ensures reliable operation in clinical environments.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD571SD/883B — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD571SD | AD571KD | ADC0804LCWM |
|---|---|---|---|---|
| Package | 18-pin SBDIP | 18-pin SBDIP | 18-pin SBDIP | 20-pin SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Resolution | 10 bits | 10 bits | 10 bits | 8 bits |
| Conversion Time | 25 µs | 25 µs | 25 µs | 100 µs |
| Input Voltage Range | 0-10 V or ±5 V | 0-10 V or ±5 V | 0-10 V or ±5 V | 0-5 V |
| Operating Temperature | -55°C to +125°C | -55°C to +125°C | 0°C to +70°C | 0°C to +70°C |
| Military Screening | Yes (883B) | No | No | No |
| Supply Voltage | +5 V, -12/-15 V | +5 V, -12/-15 V | +5 V, -12/-15 V | +5 V only |
Diferenciadores clave
- Military-grade screening (883B) (frente a AD571SD)
- True 10-bit accuracy with no missing codes (frente a ADC0804LCWM)
- Bipolar input range capability (frente a ADC0804LCWM)
Notas de diseño
The AD571SD/883B requires dual supplies: +5 V and -12 V or -15 V. Ensure that the negative supply is stable and well-filtered, as it affects the analog input range and conversion accuracy. Use 0.1 µF ceramic capacitors close to the V+ and V- pins to decouple high-frequency noise.
For optimal performance, separate analog and digital ground planes and connect them at a single point near the ADC. Keep the analog input trace short and shielded to minimize noise pickup. Place the ADC close to the signal source to reduce parasitic capacitance and inductance.
Do not exceed the absolute maximum ratings for the analog input voltage, which are typically -0.5 V to V+ +0.5 V. Also, ensure that the digital output pins are not loaded beyond the specified drive capability. When using the external clock option, ensure it is stable and within the specified frequency range.
Información de cumplimiento
Military-grade component; RoHS compliance not specified in available data.
