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Analog Devices Inc. AD573JN
- Part No.:
- AD573JN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
AD573JN.pdf
- Description:
- IC ADC 10BIT SAR 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,334
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Product details
Overview
AD573JN from Analog Devices is a complete monolithic 10-bit successive approximation analog-to-digital converter (ADC) with integrated buried Zener reference, comparator, clock, DAC, SAR, and three-state output buffers. It operates on +5 V and –12 V to –15 V supplies, accepts 0 V to +10 V unipolar or –5 V to +5 V bipolar analog inputs, and delivers full-accuracy conversion in 20 µs typical-used in precision data acquisition systems for industrial instrumentation and test equipment.
For engineers reviewing the AD573JN datasheet, AD573JN pinout, AD573JN application, or AD573JN equivalent, key selection considerations include its self-contained architecture (no external components required), dual-range input configuration via Pin 16, 8-/2-byte parallel bus interface, ±1 LSB relative accuracy over 0°C to +70°C, and compatibility with 8-bit microprocessor systems without peripheral adapters.
Technical Context
The AD573JN implements successive approximation using integrated injection logic (I2L) SAR and a laser-trimmed SiCr thin-film resistor ladder network. Its temperature-compensated subsurface Zener reference ensures stable full-scale and offset performance across temperature.
Conversion is initiated by a trailing-edge-triggered CONVERT pulse; DATA READY (DR) signals completion after 10–30 µs. 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 readout when HBE/LBE are tied.
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 LSB - ensures code transition points deviate ≤ ±0.1% of full scale from ideal linear transfer. |
| Conversion Time | 10–30 µs - enables high-throughput sampling in real-time control loops and digitizers. |
| Analog Input Ranges | 0 V to +10 V (unipolar) or –5 V to +5 V (bipolar) - selectable via open/ground connection of Pin 16 (BIP OFF). |
| Supply Voltages | +5 V (V+) and –12 V to –15 V (V–) - supports standard dual-rail industrial power architectures. |
| Output Coding | Positive true binary (unipolar); positive true offset binary (bipolar) - simplifies software interpretation without bit manipulation. |
| Power Dissipation | ≤800 mW - compatible with through-hole DIP packaging without forced cooling in ambient environments. |
Pinout & Package
AD573JN is housed in a 20-pin plastic dual in-line package (PDIP, N-20), compliant with JEDEC MS-001, with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 identifier located at top-left corner; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DB0) | LSB Data Output | Least significant bit of conversion result; enabled only when LBE = low. |
| Pin 2 (DB1) | LSB Data Output | Second least significant bit; forms 2-bit low byte with DB0 under LBE control. |
| Pin 3–10 (DB2–DB9) | MSB Data Outputs | Bits 2–9 (DB2 = 22, DB9 = 29); enabled only when HBE = low for 8-bit bus compatibility. |
| Pin 11 (V–) | Negative Supply | Connects to –12 V or –15 V rail; powers internal DAC, comparator, and SAR circuitry. |
| Pin 12 (ANALOG COMMON) | Analog Reference Node | Carries ~2 mA static current post-conversion; must be decoupled separately from DIGITAL COMMON to avoid noise coupling. |
| Pin 13 (BIPOLAR OFFSET CONTROL) | Input Range Selector | Open = bipolar (–5 V to +5 V); grounded to DIGITAL COMMON = unipolar (0 V to +10 V). |
| Pin 14 (ANALOG INPUT) | Differential Input Node | Accepts voltage referenced to ANALOG COMMON; input impedance 3–7 kΩ limits source impedance requirements. |
| Pin 15 (DIGITAL COMMON) | Digital Ground Reference | Reference for all logic inputs/outputs; allows up to ±200 mV common-mode offset vs ANALOG COMMON. |
| Pin 16 (CONVERT) | Start Conversion Trigger | Positive pulse ≥500 ns wide; falling edge initiates SAR cycle; rising edge resets internal logic and sets DR high. |
| Pin 17 (DATA READY) | Conversion Status Flag | Open-collector output with 6 kΩ internal pull-up; goes low within 30 µs to signal valid data availability. |
| Pin 18 (LBE) | Low-Byte Enable | Active-low control for DB0–DB1 buffers; must be held high during conversion to prevent bus contention. |
| Pin 19 (HBE) | High-Byte Enable | Active-low control for DB2–DB9 buffers; used independently or tied to LBE for full 10-bit readout. |
| Pin 20 (V+) | Positive Supply | Connects to +5 V rail; powers logic, output buffers, and reference circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Zener Reference | Temperature-compensated subsurface Zener provides <±2 ppm/°C drift, eliminating need for external reference trimming. |
| No External Components Required | Full 10-bit conversion achieved with only power supplies, analog input, and CONVERT pulse-reduces BOM count and layout area. |
| Bipolar/Unipolar Input Selection | Single-pin (Pin 16) configuration enables field-selectable input range without hardware change or resistor network. |
| Microprocessor Bus Interface | Three-state outputs with HBE/LBE enable direct connection to 8-bit data buses; supports memory-mapped or isolated I/O addressing. |
| No Missing Codes Over Temperature | Guaranteed monotonicity from 0°C to +70°C ensures reliable operation in industrial environments without calibration recalibration. |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Continuous voltage monitoring of sensor outputs (e.g., RTD transmitters, pressure bridges) in PLC-based control cabinets. IC Role / Device Role / Timing Role: ADC front-end converting analog process signals into digital values for real-time PID computation and alarm triggering. Use Value: ±1 LSB accuracy and no missing codes ensure precise threshold detection and repeatability across temperature swings in factory-floor enclosures. | Use Scenario: Digitizing stimulus-response waveforms during functional testing of analog ICs and power modules. IC Role / Device Role / Timing Role: High-fidelity sampling node synchronized to test sequencer clocks via CONVERT pulse for deterministic timing capture. Use Value: 20 µs typical conversion time enables >45 kSPS throughput per channel while maintaining 10-bit resolution for pass/fail margin analysis. |
| Benchtop Instrumentation | Legacy Microprocessor Systems |
Use Scenario: Stand-alone voltmeter or oscilloscope front-end where compact size and minimal support circuitry are critical. IC Role / Device Role / Timing Role: Self-timed "stand-alone" mode using DR feedback to HBE/LBE eliminates external controller overhead. Use Value: Simplified design reduces component count and debug complexity-valid data appears 500 ns after DR falls, enabling rapid prototyping. | Use Scenario: Retrofitting analog sensing into vintage 8-bit systems (e.g., Apple II, 8085-based controllers) with limited I/O resources. IC Role / Device Role / Timing Role: Memory-mapped peripheral occupying two consecutive addresses (e.g., 3000H/3001H) for high/low byte reads. Use Value: Native 8-bit bus compatibility avoids glue logic; assembly routines (e.g., 8085 ADC subroutine) directly access converted data without bit-shifting. |
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 | Successive approximation ADC with internal reference; requires external clock; 25 µs max conversion time; ±0.5 LSB INL. | Designed for lower-power embedded systems; lacks bipolar input configuration and integrated clock. | Select when lower supply current (<12 mA) is prioritized over dual-range flexibility and self-contained timing. |
| MAX1110 | 10-bit serial-output ADC with SPI interface; single +5 V supply; 12 µs conversion; ±1 LSB DNL. | Optimized for space-constrained PCBs; no parallel bus support or bipolar mode; uses external reference. | Choose for modern low-voltage designs requiring minimal footprint and digital isolation, not legacy parallel bus integration. |
Compared with AD573JN, AD7572A offers tighter INL but lacks on-chip clock and bipolar range selection, while MAX1110 reduces board area and supply complexity at the cost of parallel interface capability and integrated reference stability.
Availability
AD573JN is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, benchtop instrumentation, and legacy microprocessor system upgrades requiring stable component supply and long-term obsolescence management.
Supply support for AD573JN 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 AD573JN belongs to Analog Devices' precision data acquisition product line, designed specifically for applications demanding self-contained, high-accuracy ADC functionality in industrial and instrumentation environments without external support components.
FAQ
What is the operating temperature range for the AD573JN?
The AD573JN is specified for operation from 0°C to +70°C. This commercial-grade temperature range makes it suitable for use in controlled-environment applications such as laboratory instruments, industrial control panels, and non-military embedded systems. The device maintains ±1 LSB relative accuracy and guaranteed no-missing-codes behavior across this full range, as confirmed in the AD573JN datasheet specifications table.
How does the AD573JN handle bipolar versus unipolar input ranges?
The AD573JN selects between unipolar (0 V to +10 V) and bipolar (–5 V to +5 V) input ranges using Pin 16 (BIPOLAR OFFSET CONTROL): grounding it to DIGITAL COMMON enables unipolar mode, while leaving it open enables bipolar mode. Internally, this controls injection of an MSB-equivalent offset current into the comparator summing node. The AD573JN's output coding automatically adapts-positive true binary for unipolar, positive true offset binary for bipolar-requiring no firmware changes.
Can the AD573JN interface directly with an 8-bit microprocessor bus?
Yes, the AD573JN interfaces directly with 8-bit microprocessor buses using its HBE and LBE controls. DB9–DB2 (8 MSBs) are enabled by HBE; DB1–DB0 (2 LSBs) by LBE-allowing sequential read of high and low bytes from two consecutive memory-mapped addresses. No external buffers or peripheral interface adapters are needed, as confirmed in the AD573JN functional description and microprocessor interface section.
What is the role of the buried Zener reference in the AD573JN?
The buried Zener reference in the AD573JN serves as the primary voltage reference for the internal 10-bit current-output DAC, ensuring high stability over time and temperature. Laser-trimmed and temperature-compensated, it delivers <±2 ppm/°C drift-critical for maintaining ±1 LSB relative accuracy across the 0°C to +70°C range of the AD573JN without external calibration components.
Does the AD573JN require external components for basic operation?
No, the AD573JN requires no external components for full-accuracy 10-bit conversion. With only +5 V and –12 V to –15 V supplies, analog input, and a CONVERT pulse, the AD573JN performs complete A/D conversion in 20 µs typical. The integrated DAC, comparator, clock, SAR, Zener reference, and three-state buffers are all monolithically fabricated-making the AD573JN a truly self-contained solution as stated in its product highlights.
AD573JN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-DIP (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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD573JN FAQ
1.How can I place an order for AD573JN through Aetrix?
Please submit a Request for Quotation (RFQ) for AD573JN 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 AD573JN reliable?
The price and inventory of AD573JN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD573JN is usually 5 days.
3.What payment methods are accepted for AD573JN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD573JN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD573JN?
AD573JN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD573JN 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 AD573JN?
For technical support, including AD573JN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD573JN requirements.
6.How does Aetrix verify that AD573JN is sourced from the original manufacturer or authorized distributors?
All AD573JN 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 AD573JN meets industry standards.
7.What is the process for return or replacement of AD573JN?
All AD573JN units undergo pre-shipment inspection (PSI). If there is an issue with AD573JN, 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 AD573JN part is unused and in its original packaging.
Return procedure for AD573JN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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