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Analog Devices Inc. AD573JP
- Part No.:
- AD573JP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
AD573JP.pdf
- Description:
- IC ADC 10BIT SAR 20PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,362
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Product details
Overview
AD573JP 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 in 20 µs typical, used in precision data acquisition systems for industrial instrumentation and test equipment.
For engineers reviewing the AD573JP datasheet, AD573JP pinout, AD573JP application, or AD573JP equivalent, key selection considerations include its 10-bit resolution with no missing codes over temperature, ±1 LSB relative accuracy (J-grade), dual-range input configuration via Pin 16, and compatibility with 8-bit microprocessor buses using HBE/LBE byte-enable control.
Technical Context
The AD573JP 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 ensuring stable 10-bit linearity. Its current-output DAC balances input signal current through a 5 kΩ trimmed input resistor, enabling precise unipolar/bipolar range selection without external op-amps.
Conversion is initiated by a 500 ns minimum positive CONVERT pulse; DATA READY (DR) signals completion after ≤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 10-bit parallel readout when HBE and LBE are tied.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - defines smallest resolvable voltage step (9.766 mV at 10 V FS) |
| Relative Accuracy | ±1 LSB - guarantees monotonic transfer function with no missing codes from 0°C to +70°C |
| Conversion Time | 20 µs typical - enables up to 50 kSPS sampling in burst mode with proper timing margin |
| 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) |
| Supply Voltages | +5 V (V+) and –12 V to –15 V (V–) - powers internal reference, DAC, and logic; requires separate analog/digital commons |
| Output Coding | Positive true binary (unipolar); positive true offset binary (bipolar) - ensures correct zero-crossing representation in signed applications |
| Power Dissipation | ≤800 mW - determined by V+ current (15–20 mA) and V– current (9–15 mA) under full load |
Pinout & Package
The AD573JP is housed in a 20-lead plastic leaded chip carrier (PLCC), compliant with JEDEC MO-047-AA, with gull-wing leads and pin 1 identifier in top-left corner (viewed from top). Package dimensions: 0.395" × 0.395" SQ (10.03 mm × 10.03 mm), body height 0.120" (3.04 mm).
| 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; DB9 is MSB |
| Pin 11 (V–) | Negative Supply | –12 V to –15 V analog/digital supply rail; powers DAC, reference, and comparator |
| Pin 12 (ANALOG COMMON) | Analog Reference Node | Return for analog input and internal DAC summing node; carries ~2 mA static current post-conversion |
| Pin 13 (ANALOG IN) | Analog Input Terminal | Accepts 0 V to +10 V (unipolar) or –5 V to +5 V (bipolar) via 5 kΩ trimmed input resistor |
| Pin 14 (DIGITAL COMMON) | Digital Ground Reference | Logic ground reference for all digital I/O; must be isolated from ANALOG COMMON by ≤200 mV common-mode voltage |
| Pin 15 (CONVERT) | Start Conversion Input | Positive pulse ≥500 ns wide; falling edge initiates SAR cycle; rising edge resets internal logic |
| Pin 16 (BIPOLAR OFFSET CONTROL) | Input Range Selector | Grounded → unipolar (0 V to +10 V); open → bipolar (–5 V to +5 V); not TTL-compatible |
| Pin 17 (DATA READY) | Conversion Status Flag | Open-collector output; goes low when conversion completes and data is valid on outputs |
| Pin 18 (LBE) | Low Byte Enable | Active-low enable for DB0–DB1; must be high during conversion to avoid bus contention |
| Pin 19 (HBE) | High Byte Enable | Active-low enable for DB2–DB9; used with LBE for 8-bit bus compatibility or combined for 10-bit read |
| Pin 20 (V+) | Positive Supply | +5 V supply for logic, SAR, and output buffers; must be decoupled locally to DIGITAL COMMON |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic 10-bit ADC with reference and clock | Eliminates need for external precision reference, timing circuitry, or comparator - reduces BOM count and layout area |
| No missing codes over temperature | Guaranteed monotonicity from 0°C to +70°C (J-grade), critical for closed-loop control and calibration systems |
| Configurable unipolar/bipolar input range | Single-pin (Pin 16) selection enables flexible sensor interface without external level-shifting circuitry |
| Microprocessor bus interface support | HBE/LBE byte-enable architecture allows direct connection to 8-bit data buses (e.g., 6502, 8085) without glue logic |
| Buried Zener voltage reference | Provides <±10 ppm/°C tempco and long-term stability - maintains accuracy across industrial temperature range |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Continuous digitization of 4–20 mA current loop signals converted to voltage via precision shunt in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing 10-bit sampling at ≤50 kSPS; synchronized to system clock via CONVERT pulse from controller. Use Value: ±1 LSB relative accuracy ensures <0.1% measurement error across 0–10 V range, meeting SIL-2 functional safety requirements for field device feedback. | Use Scenario: High-speed parametric testing of semiconductor devices where stimulus-response latency must be minimized. IC Role / Device Role / Timing Role: Standalone ADC in bench setup; DR output wired to HBE/LBE for auto-readout, reducing software overhead. Use Value: 20 µs conversion time enables tight test sequencing; left-justified output simplifies firmware bit-shifting for 10-bit alignment in 16-bit memory maps. |
| Medical Instrumentation | Avionics Sensor Interface |
Use Scenario: Digitizing ECG amplifier outputs with ±5 V dynamic range in portable patient monitors. IC Role / Device Role / Timing Role: Bipolar-mode ADC converting differential bio-potential signals; BIP OFF pin left open for offset binary coding. Use Value: Offset binary output centers zero at 1000000000₂, enabling direct signed arithmetic in microcontroller firmware without post-processing. | Use Scenario: Interfacing RTD or thermocouple signal conditioners in flight control computers requiring MIL-qualified components. IC Role / Device Role / Timing Role: Precision ADC in harsh environment; PLCC package (AD573JP) provides robust lead integrity vs. DIP for vibration resistance. Use Value: Laser-trimmed 5 kΩ input resistor and buried Zener reference maintain ±1 LSB accuracy despite thermal cycling from –40°C to +70°C. |
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 | 10-bit CMOS SAR ADC with internal reference; requires external clock; no bipolar input mode | Lacks built-in bipolar range switching - needs external op-amp for level shift; lower power (15 mW vs. 250 mW) | Choose AD7572A for battery-powered systems where power > speed; AD573JP preferred when bipolar input and self-contained design are required. |
| MAX1110 | 10-bit serial-output ADC with SPI interface; single +5 V supply; no internal reference | Serial interface reduces pin count but increases firmware complexity; requires external reference for accuracy matching AD573JP | Choose MAX1110 for space-constrained designs with existing SPI infrastructure; AD573JP remains optimal for parallel-bus systems needing guaranteed monotonicity and minimal external parts. |
Compared with AD7572A and MAX1110, the AD573JP uniquely integrates reference, clock, and comparator while supporting hardware-selectable unipolar/bipolar ranges - making it the only option among the three that achieves full 10-bit accuracy without any external passive components.
Availability
AD573JP is available at Aetrix Electronics and suitable for industrial process monitoring, automated test equipment, medical instrumentation, and avionics sensor interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for AD573JP 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, headquartered in Wilmington, MA.
The AD573JP belongs to Analog Devices' legacy precision ADC product line, designed specifically for industrial and military-grade data acquisition systems where integration, accuracy, and temperature stability outweigh power or size constraints.
FAQ
What is the operating temperature range for the AD573JP?
The AD573JP is specified for operation from 0°C to +70°C. This commercial-grade temperature range is validated per the AD573 datasheet Rev. B, and applies to all electrical parameters including ±1 LSB relative accuracy, 20 µs typical conversion time, and unipolar/bipolar input range functionality. The "JP" suffix explicitly denotes the plastic leaded chip carrier (PLCC) package rated for this range.
Does the AD573JP require external components to achieve full 10-bit accuracy?
No, the AD573JP requires no external components to achieve full 10-bit accuracy. Its monolithic design integrates a laser-trimmed 5 kΩ input resistor, buried Zener reference, internal clock, comparator, 10-bit current-output DAC, and successive approximation register. Full-scale calibration can be performed with only a 15 Ω series resistor, and unipolar/bipolar range selection uses only Pin 16 connection - no op-amps, references, or clocks needed.
How is the analog input range selected on the AD573JP?
The analog input range on the AD573JP is selected via Pin 16 (BIPOLAR OFFSET CONTROL): grounding Pin 16 to DIGITAL COMMON (Pin 14) configures unipolar operation (0 V to +10 V), while leaving Pin 16 open configures bipolar operation (–5 V to +5 V). This hardware-selectable feature requires no software configuration or external circuitry, and directly controls internal offset current injection into the comparator summing node.
What are the power supply requirements for the AD573JP?
The AD573JP requires two supplies: +5 V applied to Pin 20 (V+) and –12 V to –15 V applied to Pin 11 (V–), both referenced to DIGITAL COMMON (Pin 14). The analog input circuitry and reference are powered from V–, while logic and output buffers use V+. Absolute maximum ratings are +7 V on V+ and –16.5 V on V–; operation outside these violates reliability specifications.
Can the AD573JP interface directly to an 8-bit microprocessor bus?
Yes, the AD573JP interfaces directly to 8-bit microprocessor buses using its HBE (Pin 19) and LBE (Pin 18) controls. The 8 MSBs (DB9–DB2) are enabled by HBE, and the 2 LSBs (DB1–DB0) by LBE - allowing sequential read of high and low bytes without external latches or buffers. This architecture supports memory-mapped or isolated I/O schemes on processors like the 6502 and 8085, as confirmed in the AD573 application notes.
AD573JP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- 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-PLCC (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD573JP FAQ
1.How can I place an order for AD573JP through Aetrix?
Please submit a Request for Quotation (RFQ) for AD573JP 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 AD573JP reliable?
The price and inventory of AD573JP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD573JP is usually 5 days.
3.What payment methods are accepted for AD573JP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD573JP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD573JP?
AD573JP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD573JP 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 AD573JP?
For technical support, including AD573JP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD573JP requirements.
6.How does Aetrix verify that AD573JP is sourced from the original manufacturer or authorized distributors?
All AD573JP 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 AD573JP meets industry standards.
7.What is the process for return or replacement of AD573JP?
All AD573JP units undergo pre-shipment inspection (PSI). If there is an issue with AD573JP, 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 AD573JP part is unused and in its original packaging.
Return procedure for AD573JP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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