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Analog Devices Inc. AD573JD
- Part No.:
- AD573JD
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
AD573JD.pdf
- Description:
- IC ADC 10BIT SAR 20CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
AD573JD from Analog Devices is a complete 10-bit successive approximation analog-to-digital converter (ADC) with integrated buried Zener reference, internal clock, comparator, DAC, and SAR-all on a single monolithic IC. It delivers ±1/2 LSB relative accuracy, 20 µs typical conversion time, and supports unipolar (0 V to +10 V) or bipolar (–5 V to +5 V) input ranges. It is used in precision data acquisition systems requiring stable, self-contained conversion without external trimming components.
For engineers reviewing the AD573JD datasheet, AD573JD pinout, AD573JD application, or AD573JD equivalent, this page provides verified technical context, real-world interface timing, package-specific layout guidance, and validated alternatives for industrial instrumentation, test equipment, and embedded control systems where guaranteed no-missing-codes performance across temperature is critical.
Technical Context
The AD573JD implements successive approximation using integrated injection logic (I2L) SAR architecture, with a laser-trimmed SiCr thin-film resistor ladder and temperature-compensated subsurface Zener reference. Its 10-bit current-output DAC balances input current through a 5 kΩ trimmed input resistor, enabling full-scale calibration via external potentiometer.
Conversion is initiated by a 500 ns minimum positive CONVERT pulse; DATA READY (DR) asserts within 1.5 µs after leading edge and goes low upon completion. Output data is left-justified: DB9–DB2 (8 MSBs) enabled by HBE, DB1–DB0 (2 LSBs) enabled by LBE-supporting both 8-bit bus interfacing and full 10-bit parallel readout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - guarantees monotonic transfer function with no missing codes over full operating range. |
| Relative Accuracy | ±1/2 LSB - ensures maximum code transition deviation from ideal line, critical for high-fidelity measurement. |
| Conversion Time | 20 µs typ - enables up to 50 kSPS sampling in burst mode with deterministic timing. |
| Analog Input Ranges | Unipolar: 0 V to +10 V; Bipolar: –5 V to +5 V - selected by grounding or floating Pin 16 (BIP OFF), no hardware change required. |
| Supply Voltages | V+ = +5 V; V– = –12 V to –15 V - dual-rail operation enables direct interface to legacy industrial signal levels. |
| Temperature Range | 0°C to +70°C - commercial-grade specification validated for stable performance in non-extreme environments. |
| Package | 20-pin side-brazed ceramic DIP (D-20) - hermetically sealed, MIL-qualified mechanical robustness and long-term parameter stability. |
Pinout & Package
AD573JD is housed in a 20-pin hermetically sealed ceramic dual in-line package (SBDIP, JEDEC MS-001 compliant, package option D-20). The package features side-brazed leads for high-reliability solder joints and low thermal resistance in demanding environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DB0) | LSB Data Output | Least significant bit of conversion result; enabled only when LBE is low; requires masking with 0xC0 in 8-bit reads. |
| Pin 2 (DB1) | LSB Data Output | Second LSB; paired with DB0 for 2-bit low-byte output; shares enable control via LBE. |
| Pin 3–10 (DB2–DB9) | MSB Data Outputs | Bits 2–9 (DB2 = bit 2, DB9 = MSB); enabled by HBE; form 8-bit high byte aligned to left-justified 10-bit word. |
| Pin 11 (V–) | Negative Supply | –12 V to –15 V rail; powers internal DAC, comparator, and reference circuitry; must be decoupled locally. |
| Pin 12 (ANALOG COMMON) | Analog Reference Node | Return for analog input path; carries ~2 mA static current post-conversion; must be isolated from digital common by ≤200 mV. |
| Pin 13 (BIPOLAR OFFSET CONTROL) | Input Range Selector | Grounded → unipolar mode (0 V to +10 V); open → bipolar mode (–5 V to +5 V); not TTL-compatible directly. |
| Pin 14 (ANALOG IN) | Differential Input Node | Accepts voltage referenced to ANALOG COMMON; input impedance 5 kΩ nominal; full-scale calibrated at 9.990 V. |
| Pin 15 (DIGITAL COMMON) | Digital Ground Reference | Reference for all logic inputs/outputs; separate from ANALOG COMMON to minimize noise coupling into conversion path. |
| Pin 16 (DATA READY) | Conversion Status Flag | Open-collector output with 6 kΩ internal pull-up; goes low at conversion completion; used for interrupt or handshaking. |
| Pin 17 (CONVERT) | Start Conversion Trigger | Positive pulse ≥500 ns wide; falling edge initiates SAR cycle; rising edge resets internal logic and asserts DR high. |
| Pin 18 (LBE) | Low-Byte Output Enable | Active-low control for DB0–DB1 buffers; must be held high during conversion to avoid bus contention. |
| Pin 19 (HBE) | High-Byte Output Enable | Active-low control for DB2–DB9 buffers; enables 8-bit parallel readout compatible with standard microprocessor data buses. |
| Pin 20 (V+) | Positive Supply | +5 V supply; powers logic, output buffers, and SAR; requires local 0.1 µF ceramic bypass to DIGITAL COMMON. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Buried Zener Reference | Provides <10 ppm/°C temperature coefficient and <20 ppm/year long-term drift-eliminates need for external reference calibration. |
| No External Components Required | Full 10-bit conversion achieved with only power supplies, analog input, and CONVERT pulse-reduces BOM count and layout complexity. |
| Flexible Bus Interface | Supports 8-bit microprocessor systems via HBE/LBE split-byte readout or 16-bit systems via tied enables-no glue logic needed. |
| Bipolar/Unipolar Input Selection | Single-pin configuration (Pin 16) switches between 0 V–+10 V and –5 V–+5 V ranges-enables one hardware design for dual-input applications. |
| Guaranteed No Missing Codes | Validated over full 0°C to +70°C range-ensures monotonicity in closed-loop control and spectroscopic measurement systems. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Continuous monitoring of 4–20 mA loop signals converted to digital via precision shunt and op-amp conditioning. IC Role / Device Role / Timing Role: ADC front-end with built-in reference and comparator; handles 0–10 V unipolar inputs at 50 kSPS burst rate. Use Value: Eliminates external reference and clock ICs, reducing system cost and board area while maintaining ±0.05% full-scale accuracy over temperature. | Use Scenario: Digitizing analog stimulus responses in semiconductor parametric testers requiring repeatable 10-bit resolution. IC Role / Device Role / Timing Role: Standalone ADC triggered by system controller; uses DR handshake for precise timing alignment with stimulus pulses. Use Value: 20 µs conversion time and deterministic DR assertion enable tight synchronization with pattern generators and DUT clocks. |
| Benchtop Laboratory Instruments | Legacy System Upgrades |
Use Scenario: Embedded digitizer in oscilloscope auxiliary channels or multimeter backplanes needing stable, low-drift conversion. IC Role / Device Role / Timing Role: Primary A/D element with buried Zener reference; operates from ±15 V rails matching legacy instrument power architecture. Use Value: Hermetic ceramic DIP package ensures long-term parameter stability and reliability in calibration-critical lab environments. | Use Scenario: Replacement ADC in aging industrial PLC I/O modules originally designed for AD573J-series parts. IC Role / Device Role / Timing Role: Pin- and function-compatible drop-in replacement for AD573JN/AD573JP in existing PCB layouts. Use Value: Same pinout, timing, and electrical specs as original AD573J variants-no firmware or layout changes required for field upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7572A | 12-bit resolution, ±1/2 LSB INL, but requires external reference and clock; 25 µs conversion time. | Higher resolution but increased BOM and layout complexity; suited for new designs prioritizing accuracy over integration. | Select AD7572A only if 12-bit resolution is mandatory and external component addition is acceptable. |
| MAX1110 | 10-bit, serial SPI interface, +3 V/+5 V single supply, no negative rail required; 10 µs conversion time. | Eliminates negative supply but sacrifices parallel bus compatibility and absolute accuracy (±2 LSB INL). | Choose MAX1110 for space-constrained, low-voltage systems where serial interface and simplified power are priorities. |
Compared with AD573JD, AD7572A offers higher resolution at the cost of added external components and slower speed, while MAX1110 reduces supply complexity and improves speed but trades off absolute accuracy and parallel bus support-making AD573JD optimal for legacy industrial systems requiring self-contained, high-stability 10-bit conversion.
Availability
AD573JD is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, benchtop instrumentation, and legacy system upgrades requiring stable component supply with long-lifecycle assurance.
Supply support for AD573JD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD573 series belongs to Analog Devices' precision data acquisition product line, designed specifically for applications demanding integrated, temperature-stable, no-missing-codes ADC functionality in harsh or space-constrained environments.
FAQ
What is the conversion time specification for AD573JD?
The AD573JD has a guaranteed maximum conversion time of 30 µs over its full operating temperature range (0°C to +70°C), with a typical value of 20 µs at +25°C. This timing is measured from the falling edge of the CONVERT pulse to the assertion of DATA READY (DR) going low. The device's internal I2L SAR architecture ensures deterministic timing without variation due to input signal level.
Does AD573JD require external components to achieve full 10-bit accuracy?
No, AD573JD does not require external components to achieve full 10-bit accuracy. It integrates a buried Zener reference, internal clock, comparator, 10-bit DAC, SAR, and output buffers on a single chip. Only power supplies (+5 V and –12 V to –15 V), analog input, and the CONVERT trigger are needed for basic operation. Full-scale calibration may use an optional external potentiometer, but it is not required for functional accuracy.
How is bipolar versus unipolar input range selected on AD573JD?
Bipolar (–5 V to +5 V) or unipolar (0 V to +10 V) input range selection on AD573JD is controlled solely by Pin 16 (BIPOLAR OFFSET CONTROL). Grounding Pin 16 to DIGITAL COMMON selects unipolar mode; leaving Pin 16 open selects bipolar mode. No resistors, jumpers, or external logic are required-this is a hardware-configured, single-pin function confirmed in the AD573JD datasheet.
What package type is used for AD573JD?
AD573JD is supplied in a 20-pin side-brazed ceramic dual in-line package (SBDIP), designated D-20 per Analog Devices' ordering guide. This hermetically sealed package meets MIL-STD-883 requirements and provides superior thermal stability, moisture resistance, and long-term parameter retention compared to plastic DIP variants.
Can AD573JD interface directly with an 8-bit microprocessor bus?
Yes, AD573JD interfaces directly with 8-bit microprocessor buses using its HBE (Pin 19) and LBE (Pin 18) controls. The 8 MSBs (DB9–DB2) are enabled by HBE and appear on Pins 10–3; the 2 LSBs (DB1–DB0) are enabled by LBE on Pins 2–1. This allows reading the 10-bit result as two consecutive 8-bit bytes-no external latches or buffers are needed, as confirmed in the AD573JD functional description and timing diagrams.
AD573JD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- +4.5V ~ 7V, -12V ~ 16.5V
- Voltage - Supply, Digital:
- +4.5V ~ 7V, -12V ~ 16.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD573JD FAQ
1.How can I place an order for AD573JD through Aetrix?
Please submit a Request for Quotation (RFQ) for AD573JD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD573JD reliable?
The price and inventory of AD573JD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD573JD is usually 5 days.
3.What payment methods are accepted for AD573JD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD573JD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD573JD?
AD573JD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD573JD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD573JD?
For technical support, including AD573JD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD573JD requirements.
6.How does Aetrix verify that AD573JD is sourced from the original manufacturer or authorized distributors?
All AD573JD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD573JD meets industry standards.
7.What is the process for return or replacement of AD573JD?
All AD573JD units undergo pre-shipment inspection (PSI). If there is an issue with AD573JD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD573JD part is unused and in its original packaging.
Return procedure for AD573JD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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