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Analog Devices Inc. AD573JPZ
- Part No.:
- AD573JPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
AD573JPZ.pdf
- Description:
- IC ADC 10BIT SAR 20PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,177
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Product details
Overview
AD573JPZ from Analog Devices is a complete monolithic 10-bit successive approximation analog-to-digital converter (ADC) with integrated buried Zener reference, internal clock, comparator, DAC, and SAR - requiring no external components for full-accuracy conversion. 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 conversion results in 20 µs typical. It is used in precision data acquisition systems interfacing with 8-bit microprocessors.
For engineers reviewing the AD573JPZ datasheet, AD573JPZ pinout, AD573JPZ application, or AD573JPZ equivalent, key selection considerations include its self-contained architecture, dual-range input flexibility via Pin 16 control, 3-state byte-split output interface (HBE/LBE), guaranteed no-missing-codes performance over 0°C to +70°C, and compatibility with memory-mapped or isolated I/O microprocessor buses.
Technical Context
The AD573JPZ implements successive approximation using integrated injection logic (I2L) SAR and a laser-trimmed SiCr thin-film resistor ladder, enabling true 10-bit linearity. Its temperature-compensated subsurface Zener reference ensures stable full-scale and offset performance across temperature.
Conversion is initiated by a 500 ns minimum positive CONVERT pulse; DATA READY (DR) signals completion (~20 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 overlap and 16-bit parallel readout when HBE/LBE are tied.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - defines smallest resolvable analog step as ~9.766 mV in 0–10 V range. |
| Conversion Time | 20 µs typ - enables up to 50 kSPS sampling without pipeline or oversampling. |
| Analog Input Ranges | 0 V to +10 V (unipolar) or –5 V to +5 V (bipolar) - selected by grounding or floating Pin 16 (BIP OFF). |
| Relative Accuracy | ±0.5 LSB max - ensures monotonic transfer function and no missing codes over full temperature range. |
| Supply Voltages | +5 V (V+) and –12 V to –15 V (V–) - powers internal DAC, reference, and logic; enables rail-to-rail analog input swing. |
| Output Interface | Three-state, split-byte: DB9–DB2 (HBE), DB1–DB0 (LBE) - simplifies connection to 8-bit data buses without external latches. |
| Reference | Buried Zener - provides <±10 ppm/°C drift and <0.1% long-term stability, eliminating external reference design. |
Pinout & Package
The AD573JPZ is housed in a 20-lead plastic leaded chip carrier (PLCC, package option P-20), with gull-wing leads and JEDEC MO-047-AA compliance. Pin 1 identifier located at top-left corner of top view; bottom view shows pins facing upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (DB0) | LSB Data Output | Least significant bit of conversion result; enabled only when LBE is 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 through 9 (DB2 = 22, DB9 = 29); enabled only when HBE is low. |
| Pin 11 (CONVERT) | Start Conversion Input | Positive-going edge resets SAR; falling edge initiates 20 µs conversion cycle. |
| Pin 12 (DR) | Data Ready Output | Open-collector signal goes low at conversion completion; used to strobe HBE/LBE or trigger interrupts. |
| Pin 13 (HBE) | High-Byte Enable | Active-low control for DB9–DB2; must be high during conversion to avoid bus contention. |
| Pin 14 (ANALOG IN) | Analog Signal Input | Current-input node; accepts 0–10 V (via 5 kΩ internal resistor) or ±5 V (with BIP OFF open). |
| Pin 15 (ANALOG COM) | Analog Ground Reference | Return for analog input current; carries ~2 mA static current post-conversion; requires separate routing from DIG COM. |
| Pin 16 (BIP OFF) | Bipolar Offset Control | Open = bipolar mode (–5 V to +5 V); grounded = unipolar mode (0 V to +10 V). |
| Pin 17 (DIG COM) | Digital Ground Reference | Logic ground reference; isolated from ANALOG COM to minimize noise coupling. |
| Pin 18 (V–) | Negative Supply | –12 V to –15 V supply for DAC, reference, and comparator; decoupling required near pin. |
| Pin 19 (LBE) | Low-Byte Enable | Active-low control for DB1–DB0; synchronized with HBE for byte-aligned reads. |
| Pin 20 (V+) | Positive Supply | +5 V supply for logic and internal circuitry; tolerant of +4.5 V to +7 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Zener Reference | Eliminates need for external voltage reference and trimming components; maintains ±0.5 LSB accuracy over 0°C to +70°C. |
| Split-Byte Output Architecture | Enables direct 8-bit bus interfacing via HBE/LBE without external latches or glue logic. |
| Unipolar/Bipolar Range Selection | Single-pin configuration (Pin 16) switches between 0–10 V and –5–+5 V input ranges - no external resistors or switches required. |
| No Missing Codes Guarantee | Ensures monotonicity and deterministic digital output across full operating range - critical for closed-loop control and measurement integrity. |
| Self-Contained Successive Approximation Core | Includes DAC, SAR, comparator, and clock on-chip - no external timing or sequencing logic needed for basic operation. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous digitization of 4–20 mA loop signals conditioned to 0–10 V or ±5 V ranges in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing single-shot conversions triggered by system controller; DR signal synchronizes data capture. Use Value: Guaranteed no-missing-codes and ±0.5 LSB accuracy ensure precise representation of process variables like pressure or temperature without interpolation errors. | Use Scenario: Front-end digitization in benchtop multimeters and automated test equipment acquiring DC voltage with selectable ranges. IC Role / Device Role / Timing Role: Standalone ADC in "stand-alone mode" (DR tied to HBE/LBE); provides valid left-justified 10-bit output 500 ns after DR falls. Use Value: Eliminates need for external timing logic or microcontroller intervention - reduces BOM and layout complexity in portable instruments. |
| Microprocessor-Based Data Loggers | Legacy System Analog Interface Upgrades |
Use Scenario: Adding analog sensing capability to 8-bit embedded systems (e.g., 6502, 8085) with limited I/O resources and tight timing budgets. IC Role / Device Role / Timing Role: Memory-mapped peripheral where ADC ADDR writes initiate conversion and consecutive reads fetch high/low bytes via HBE/LBE. Use Value: 20 µs conversion time and 150 ns output access allow integration into existing bus cycles without wait states in most 1–5 MHz systems. | Use Scenario: Replacing aging discrete ADC designs (e.g., ADC080x + external ref/clock) in field-deployed industrial controllers requiring long-term component availability. IC Role / Device Role / Timing Role: Drop-in functional replacement providing identical pin-compatible interface (PLCC-20) and timing behavior to legacy layouts. Use Value: Monolithic integration reduces failure points and eliminates calibration drift from external references - extending mean time between maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit successive approximation ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7572AJPZ-REEL | CMOS process, +5 V only supply, 25 µs conversion time, no internal reference - requires external 2.5 V reference. | Lower power (15 mW vs. 225 mW), but lacks bipolar input support and Zener stability; suited for battery-powered systems. | Select AD7572AJPZ-REEL only if single-supply operation and lower power outweigh need for internal reference and bipolar range. |
| MAX160BCPP | 10-bit SAR ADC with internal reference and ±5 V input range only; 12 µs conversion; CMOS-compatible outputs; +5 V supply only. | Smaller 20-pin PDIP package, no unipolar mode; lacks HBE/LBE split-byte control - requires external latch for 10-bit read. | Choose MAX160BCPP when bipolar-only operation suffices and board space constraints favor PDIP over PLCC. |
Compared with AD573JPZ, AD7572AJPZ-REEL trades internal Zener stability and dual-range flexibility for lower power and single-supply simplicity, while MAX160BCPP offers faster conversion and smaller footprint but sacrifices unipolar mode and split-byte interface - making AD573JPZ optimal for legacy industrial designs requiring guaranteed monotonicity and minimal external components.
Availability
AD573JPZ is available at Aetrix Electronics and suitable for industrial process monitoring, test equipment development, and microprocessor-based data loggers requiring stable component supply, long-lifecycle support, and proven reliability in harsh environments.
Supply support for AD573JPZ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD573JPZ belongs to Analog Devices' legacy precision ADC product line, designed specifically for industrial and instrumentation applications demanding high DC accuracy, temperature stability, and minimal external component count in embedded systems.
FAQ
What is the maximum conversion rate supported by the AD573JPZ?
The AD573JPZ has a maximum conversion time of 30 µs (over temperature), corresponding to a theoretical maximum sampling rate of approximately 33 kSPS. However, practical throughput depends on system-level timing - including setup/hold for CONVERT, DR assertion delay (~1.5 µs), and data read latency. For continuous acquisition, minimum inter-conversion interval must exceed 30 µs to guarantee completion before the next start pulse. The AD573JPZ does not support pipelined or simultaneous sampling modes.
How is bipolar input range configured on the AD573JPZ?
Bipolar input range (–5 V to +5 V) on the AD573JPZ is configured by leaving Pin 16 (BIP OFF) unconnected (open). In this state, the internal bipolar offset current is injected into the comparator summing node, shifting the transfer function so that –5 V yields code 0000000000, 0 V yields 1000000000, and +4.99 V yields 1111111111. No external components are required. Unipolar mode (0 V to +10 V) is selected by grounding Pin 16 to DIG COM (Pin 17).
Does the AD573JPZ require external clocking or timing components?
No, the AD573JPZ does not require external clocking or timing components. It contains a fully integrated clock generator, comparator, DAC, SAR, and three-state output buffers on a single die. Only the CONVERT pulse (minimum 500 ns wide) is needed to initiate conversion. The internal clock drives the successive approximation sequence, and DATA READY (DR) provides asynchronous completion signaling - enabling direct interface to microprocessors without additional timing ICs or crystal oscillators.
What package type is used for the AD573JPZ, and is it RoHS compliant?
The AD573JPZ uses a 20-lead plastic leaded chip carrier (PLCC) package, designated P-20 per Analog Devices' ordering guide. This gull-wing surface-mount package complies with JEDEC standard MO-047-AA. While the original AD573JPZ datasheet predates RoHS legislation, Analog Devices confirms that PLCC-packaged AD573 variants manufactured after 2006 meet RoHS Directive 2011/65/EU requirements, including lead-free terminations and compliant molding compounds. Aetrix Electronics supplies only RoHS-compliant AD573JPZ units.
Can the AD573JPZ be interfaced directly to an 8-bit microprocessor bus without external latches?
Yes, the AD573JPZ can be interfaced directly to an 8-bit microprocessor bus without external latches, thanks to its split-byte three-state output architecture. DB9–DB2 (8 MSBs) are enabled by HBE, and DB1–DB0 (2 LSBs) by LBE - allowing sequential reads of high and low bytes using standard RD strobes. When HBE and LBE are asserted separately, the 8-bit data bus sees clean, non-overlapping values. This eliminates the need for external octal latches or address decoding logic beyond basic chip select generation.
AD573JPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Bulk
- 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-PLCC (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD573JPZ FAQ
1.How can I place an order for AD573JPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD573JPZ 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 AD573JPZ reliable?
The price and inventory of AD573JPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD573JPZ is usually 5 days.
3.What payment methods are accepted for AD573JPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD573JPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD573JPZ?
AD573JPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD573JPZ 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 AD573JPZ?
For technical support, including AD573JPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD573JPZ requirements.
6.How does Aetrix verify that AD573JPZ is sourced from the original manufacturer or authorized distributors?
All AD573JPZ 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 AD573JPZ meets industry standards.
7.What is the process for return or replacement of AD573JPZ?
All AD573JPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD573JPZ, 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 AD573JPZ part is unused and in its original packaging.
Return procedure for AD573JPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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