AD7582TQ/883B - 12-Bit 4-Ch SAR ADC | Analog Devices
MPN: AD7582TQ/883B ✓ פעילAD7582TQ/883B סקירה
An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital numbers. The AD7582TQ/883B uses the successive approximation register (SAR) architecture, which balances speed and resolution for medium-speed data acquisition. SAR ADCs are widely used in industrial, aerospace, and instrumentation systems where moderate sampling rates and high accuracy are required. The AD7582TQ/883B is part of the data acquisition signal chain, converting sensor outputs, voltage levels, or other analog signals into digital data for processing by microcontrollers or digital signal processors.
Key features of the AD7582TQ/883B include four multiplexed input channels, a 12-bit resolution, and a maximum conversion time of 100 µs. The device includes an auto-zero cycle at the start of each conversion, which reduces offset errors and ensures low system noise. The parallel digital interface simplifies connection to microprocessors and DSPs. The MIL-STD-883 Class B screening ensures high reliability in harsh environments, with a wide operating temperature range of -55°C to +125°C.
The AD7582TQ/883B is designed for medium-speed data acquisition systems that require multiple analog input channels. The four input channels can be configured for single-ended or differential inputs, providing flexibility in signal conditioning. The device requires only a few external passive components and a voltage reference, as noted in the Analog Devices product page. The auto-zero feature minimizes the need for external calibration, simplifying system design.
Typical applications include military avionics, industrial process control, test and measurement equipment, and aerospace telemetry. The wide temperature range and MIL-STD-883 screening make it ideal for defense and aerospace systems where reliability is critical. The parallel interface allows direct connection to legacy 8-bit or 16-bit microprocessors, facilitating integration into existing designs.
When designing with the AD7582TQ/883B, ensure that the analog input voltage does not exceed the supply rails and that adequate decoupling is provided on the power supply pins. The voltage reference should be stable and low-noise to achieve full 12-bit accuracy. The conversion time of 100 µs limits the maximum sampling rate to 10 kSPS, which should be considered for high-speed applications.
חלופות תחליף ישיר עבור AD7582TQ/883B — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
AD7582BQ
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
AD7582TQ
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
AD7582TQ/883B דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 12 Bit |
| Number of Input Channels | 4 |
| קצב דגימה | 10 kSPS |
| Conversion Time | 100 µs (max) |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Architecture | SAR |
| מתח אספקה | ±5V, +15V |
| טווח טמפרטורת פעולה | -55°C to +125°C |
| מארז | 28-CDIP |
| סוג הרכבה | Through Hole |
| Screening Level | MIL-STD-883 Class B |
| Reference Type | External |
| Number of A/D Converters | 1 |
| סטטוס RoHS | Non-Compliant |
תצורת פינים של AD7582TQ/883B
| פין 1 | VDD — Positive supply voltage (+15V) |
| פין 2 | VSS — Negative supply voltage (-5V) |
| פין 3 | AGND — Analog ground |
| פין 4 | VREF — Voltage reference input |
| פין 5 | AIN0 — Analog input channel 0 |
| פין 6 | AIN1 — Analog input channel 1 |
| פין 7 | AIN2 — Analog input channel 2 |
| פין 8 | AIN3 — Analog input channel 3 |
| פין 9 | DGND — Digital ground |
| פין 10 | DB0 — Data bit 0 (LSB) |
| פין 11 | DB1 — Data bit 1 |
| פין 12 | DB2 — Data bit 2 |
| פין 13 | DB3 — Data bit 3 |
| פין 14 | DB4 — Data bit 4 |
| פין 15 | DB5 — Data bit 5 |
| פין 16 | DB6 — Data bit 6 |
| פין 17 | DB7 — Data bit 7 |
| פין 18 | DB8 — Data bit 8 |
| פין 19 | DB9 — Data bit 9 |
| פין 20 | DB10 — Data bit 10 |
| פין 21 | DB11 — Data bit 11 (MSB) |
| פין 22 | CS — Chip select (active low) |
| פין 23 | RD — Read strobe (active low) |
| פין 24 | BUSY — Busy output (high during conversion) |
| פין 25 | CONVST — Conversion start input |
| פין 26 | A0 — Channel select bit 0 |
| פין 27 | A1 — Channel select bit 1 |
| פין 28 | VDD — Positive supply voltage (+15V) |
יישומים טיפוסיים
AD7582TQ/883B מתאים עבור 6 יישוםs: Military Avionics, Industrial Process Control, Test and Measurement Equipment, Aerospace Telemetry, Medical Monitoring, Data Acquisition Systems.
Military Avionics
The AD7582TQ/883B is ideal for military avionics data acquisition systems due to its MIL-STD-883 Class B screening and wide operating temperature range of -55°C to +125°C. Its 12-bit resolution and 10 kSPS sampling rate are sufficient for monitoring flight control parameters, engine sensors, and navigation data. The four input channels allow multiplexing of multiple analog signals, reducing component count. The parallel interface simplifies connection to mission computers. The ceramic CDIP package ensures reliability in harsh vibration and thermal environments. Designers can use the auto-zero feature to maintain accuracy over temperature without external calibration.
מומלץ
Industrial Process Control
In industrial process control, the AD7582TQ/883B provides reliable 12-bit conversion of sensor signals such as temperature, pressure, and flow. Its 100 µs conversion time allows monitoring of multiple channels at 10 kSPS, suitable for real-time control loops. The device operates from ±5V and +15V supplies, compatible with industrial signal conditioning circuits. The parallel interface enables direct connection to PLCs and microcontrollers. The wide temperature range ensures operation in factory environments. The auto-zero feature reduces offset drift, improving long-term accuracy. The through-hole CDIP package is robust for industrial PCBs. Designers should ensure proper grounding and decoupling for optimal performance.
מומלץ
Test and Measurement Equipment
The AD7582TQ/883B is well-suited for test and measurement instruments requiring medium-speed, multi-channel data acquisition. Its 12-bit resolution and 10 kSPS sampling rate are adequate for digitizing waveforms in oscilloscopes, data loggers, and spectrum analyzers. The four input channels allow simultaneous monitoring of multiple test points. The parallel interface facilitates high-speed data transfer to DSPs or FPGAs. The device's auto-zero function ensures accurate measurements over time. The MIL-STD-883 screening provides high reliability for benchtop and portable instruments. The wide temperature range supports operation in various environments. Designers can use the external reference to achieve precise full-scale calibration.
מומלץ
Aerospace Telemetry
The AD7582TQ/883B is designed for aerospace telemetry systems that demand high reliability and wide temperature operation. Its MIL-STD-883 Class B screening ensures it can withstand the rigors of space and high-altitude environments. The 12-bit resolution and 10 kSPS sampling rate are suitable for transmitting sensor data from satellites, launch vehicles, and aircraft. The four input channels allow multiplexing of various telemetry signals. The parallel interface enables direct connection to telemetry encoders. The ceramic package provides hermetic sealing, protecting against moisture and contaminants. The auto-zero feature maintains accuracy over the -55°C to +125°C range. Designers should consider the power supply requirements and ensure stable references for reliable data.
מומלץ
Medical Monitoring
The AD7582TQ/883B can be used in medical monitoring equipment such as patient vital signs monitors and diagnostic devices. Its 12-bit resolution provides sufficient accuracy for physiological signals like ECG, EEG, and temperature. The 10 kSPS sampling rate is adequate for most biomedical signals. The four input channels allow monitoring of multiple parameters simultaneously. The device operates from ±5V and +15V supplies, compatible with medical-grade power supplies. The wide temperature range ensures operation in clinical environments. The MIL-STD-883 screening provides high reliability for life-critical applications. The parallel interface simplifies integration with microcontrollers. Designers should ensure proper isolation and safety standards are met.
מומלץ
Data Acquisition Systems
The AD7582TQ/883B is a fundamental building block for general-purpose data acquisition systems. Its 12-bit resolution and 10 kSPS sampling rate are suitable for logging analog signals from various sensors. The four input channels allow multiplexing of multiple signals, reducing system cost. The parallel interface enables easy connection to microprocessors and DSPs. The device's auto-zero feature minimizes offset errors, improving measurement accuracy. The wide temperature range and MIL-STD-883 screening make it suitable for rugged environments. The through-hole CDIP package is easy to handle in prototyping and production. Designers can use the external reference to set the full-scale range. The device requires minimal external components, simplifying board design.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור AD7582TQ/883B — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | AD7582BQ | AD7582KN | AD7582KNZ | MX7582KN+ | AD7582TQ |
|---|---|---|---|---|---|---|
| Package | 28-CDIP | 28-CDIP | 28-PDIP | 28-PDIP | 28-PDIP | 28-CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | Analog Devices |
| Resolution | 12 Bit | 12 Bit | 12 Bit | 12 Bit | 12 Bit | 12 Bit |
| Sampling Rate | 10 kSPS | 10 kSPS | 10 kSPS | 10 kSPS | 10 kSPS | 10 kSPS |
| Supply Voltage | ±5V, +15V | ±5V, +15V | ±5V, +15V | ±5V, +15V | ±5V, +15V | ±5V, +15V |
| Operating Temperature Range | -55°C to +125°C | -55°C to +125°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | -55°C to +125°C |
| Screening Level | MIL-STD-883 Class B | None | None | None | None | None |
| RoHS Status | Non-Compliant | Non-Compliant | Non-Compliant | Compliant | Non-Compliant | Non-Compliant |
מבדילים עיקריים
- MIL-STD-883 Class B screening (לעומתAD7582BQ)
- Wide operating temperature range (לעומתAD7582KN)
- Ceramic package for hermeticity (לעומתAD7582KN)
הערות תכנון
The AD7582TQ/883B requires ±5V and +15V supplies. Use low-impedance decoupling capacitors (e.g., 0.1 µF ceramic and 10 µF tantalum) close to each supply pin. The analog and digital supplies should be separated and connected at a single point to minimize noise coupling. Ensure the +15V supply is stable and well-regulated, as it powers the analog circuitry and affects conversion accuracy.
For optimal performance, use a ground plane and separate analog and digital ground areas, connecting them at a single point near the ADC. Keep analog input traces short and shielded from digital signals. Place the voltage reference and decoupling capacitors close to the VREF pin. Avoid routing digital lines under the analog input pins to reduce crosstalk.
Do not exceed the absolute maximum ratings for supply voltages or input voltages. The analog input voltage should not go below -0.3V or above VDD+0.3V. Ensure the conversion start signal (CONVST) is clean and free of noise to avoid false triggers. The external voltage reference must be stable and low-noise; a precision reference such as the AD780 is recommended for full 12-bit accuracy.
מידע על תאימות
The AD7582TQ/883B is a MIL-STD-883 Class B device and is not RoHS compliant due to lead-based solder in the ceramic package. REACH and conflict minerals status not specified in available data.
