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Analog Devices Inc. AD574AJPZ-REEL
- Part No.:
- AD574AJPZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
AD574AJPZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
AD574AJPZ-REEL from Analog Devices is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with on-chip reference, requiring no external components for full conversion functionality. It supports ±5 V, ±10 V, 0–10 V, and 0–20 V input ranges; delivers ±1/2 LSB linearity error over 0°C to +70°C; and features internal 10.00 V ±0.2% buried Zener reference. It is used in precision data acquisition systems where high DC accuracy and temperature stability are critical.
For engineers reviewing the AD574AJPZ-REEL datasheet, AD574AJPZ-REEL pinout, AD574AJPZ-REEL application, or AD574AJPZ-REEL equivalent, key selection considerations include guaranteed 12-bit no-missing-codes performance, bipolar/unipolar mode flexibility, ±12 V/±15 V dual-supply operation, and compatibility with microprocessor buses via CE/CS/R/C control logic.
Technical Context
The AD574AJPZ-REEL implements a fully integrated successive-approximation register (SAR) architecture with internal 12-bit current-output DAC, comparator, clock generator, and output buffers. Its conversion cycle is self-timed and non-interruptible-once initiated, it completes in 15–35 µs (12-bit) without external clocking.
It uses a temperature-compensated buried Zener reference (9.98–10.02 V) capable of sourcing 1.5 mA, and includes trimmed thin-film scaling resistors for precise 10 V/20 V span selection. Input impedance is 5 kΩ (10 V span) or 10 kΩ (20 V span), and digital interface supports both 12-bit parallel and 8-bit byte-mode readout via AO and 12/8 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with monotonic transfer function. |
| Linearity Error (TMIN–TMAX) | ±1/2 LSB - ensures maximum deviation of any code from ideal straight line across full 0°C to +70°C range. |
| No Missing Codes | Guaranteed to 12-bit resolution - all 4096 codes appear in monotonic sequence over full temperature range. |
| Internal Reference Voltage | 10.00 V ±0.2% - stable, trimmed Zener source enabling absolute calibration without external reference. |
| Conversion Time | 15–35 µs (12-bit) - fixed-duration SAR cycle; supports up to ~28.6 kSPS in burst mode with external timing control. |
| Supply Voltages | VCC = +11.4 to +16.5 V; VEE = –11.4 to –16.5 V; VLOGIC = +4.5 to +5.5 V - dual ±12 V or ±15 V analog supplies with separate +5 V logic rail. |
| Power Dissipation | 390–725 mW - determined by supply voltage and operating current (ICC = 2–5 mA, IEE = 18–30 mA). |
Pinout & Package
AD574AJPZ-REEL is supplied in a 28-lead plastic leaded chip carrier (PLCC, package code P-28A), with leads arranged in a square J-lead configuration and body size 11.43 mm × 11.43 mm. The package is RoHS-compliant and moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | Digital Common (DC) | Reference ground for logic inputs/outputs; must be tied to system digital ground, but isolated from analog common except at single point near device. |
| 9 | Analog Common (AC) | High-quality reference ground for internal reference, DAC, and analog circuitry; connects directly to system analog ground plane. |
| 8, 10 | REF OUT / REF IN | 10 V reference output and buffered input node; requires 50 Ω resistor between them for full-scale calibration trim. |
| 12 | BIP OFF | Bipolar offset adjustment terminal; grounded for unipolar mode, connected to REF OUT for ±5 V/±10 V operation. |
| 13, 14 | 10VIN / 20VIN | Dedicated analog input terminals for 10 V span (5 kΩ input impedance) or 20 V span (10 kΩ input impedance). |
| 2–7, 16–20, 22–27 | DB0–DB11 | 12-bit parallel digital output bus; three-state, TTL-compatible outputs with 2.4 V high / 0.4 V low levels under load. |
| 21 | STS | Status flag: high during conversion, low when result is ready and output buffers are valid. |
| 28, 2, 3, 4 | CE, CS, R/C, A0 | Control logic inputs: Chip Enable, Chip Select, Read/Convert, and Byte Address - define conversion start, data read mode, and 8-/12-bit access. |
| 5 | 12/8 | Data format select: hard-wired to VLOGIC for 12-bit word mode or to DC for two 8-bit byte mode. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 10.00 V reference | Eliminates need for external precision reference; ±0.2% initial accuracy and <50 ppm/°C full-scale tempco enables stable DC measurements. |
| Guaranteed 12-bit no-missing-codes | Ensures monotonicity across full temperature range-critical for closed-loop control and servo applications where code reversal causes instability. |
| Selectable 12-bit or 8-bit conversion | AO pin controls conversion length: 12-bit (AO = 0) for full precision; 8-bit (AO = 1) for faster 24 µs acquisition in lower-resolution subsystems. |
| Flexible analog input ranges | Hardware-selectable ±5 V, ±10 V, 0–10 V, 0–20 V spans via dedicated pins and internal scaling resistors-no external gain stages required. |
| Microprocessor-compatible control | CE/CS/R/C/AO logic accepts standard TTL-level signals and supports direct 8-bit bus interfacing with automatic nibble alignment and trailing-zero padding. |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Continuous digitization of 4–20 mA loop signals conditioned to 0–10 V using precision op-amps in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing high-accuracy DC-coupled sampling at ≤1 kSPS with calibration-trimmed offset and full-scale. Use Value: ±1/2 LSB linearity and 12-bit monotonicity ensure accurate representation of small process deviations-e.g., ±0.025% FS error in flow meter feedback. | Use Scenario: Digitizing calibrated sensor outputs (strain gauges, RTDs) in benchtop multimeters and automated test systems. IC Role / Device Role / Timing Role: Standalone ADC capturing static or slowly varying analog values with minimal external support circuitry. Use Value: Internal 10 V reference and trimmed resistors eliminate external calibration components-reducing BOM count and long-term drift in metrology-grade instruments. |
| Avionics Sensor Interfaces | Medical Diagnostic Signal Acquisition |
Use Scenario: Converting pressure, temperature, and position transducer outputs in flight control computers operating across –55°C to +125°C (using AD574AS/AT variants); AD574AJPZ-REEL used in ground-support test rigs. IC Role / Device Role / Timing Role: High-reliability ADC providing deterministic 35 µs conversion latency and immunity to supply ripple in safety-critical monitoring paths. Use Value: Dual ±15 V supply tolerance and 825 mW absolute max power dissipation rating support ruggedized, conduction-cooled module designs. | Use Scenario: Digitizing ECG, EEG, or blood gas analyzer analog front-end outputs in portable diagnostic devices requiring low-noise, DC-accurate conversion. IC Role / Device Role / Timing Role: Precision ADC stage following low-noise instrumentation amplifiers and anti-alias filters; operated in unipolar 0–10 V mode. Use Value: 5 kΩ input impedance and defined input transient behavior allow stable interface with high-output-impedance biosignal sources without added buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7874KN | 12-bit SAR ADC with 10 µs conversion time, internal reference, and SPI-compatible serial interface; no parallel bus or 8-bit mode. | Targets space-constrained or serial-bus-based systems; lacks AD574AJPZ-REEL's microprocessor parallel interface and flexible range selection. | Choose AD7874KN when board area or wiring count is constrained and serial interface suffices. |
| ADS7800KP | 12-bit SAR ADC with 10 µs conversion, internal reference, and parallel 12-bit output; requires external +5 V only (no ±15 V rails); 28-pin SOIC package. | Designed for single-supply embedded systems; cannot support bipolar inputs or high-voltage industrial signal conditioning without external level-shifting. | Choose ADS7800KP for cost-sensitive, low-power, single-supply applications where ±15 V infrastructure is unavailable. |
Compared with AD7874KN and ADS7800KP, the AD574AJPZ-REEL uniquely combines parallel microprocessor interface, hardware-selectable input ranges, ±15 V analog supply tolerance, and guaranteed 12-bit monotonicity-making it optimal for legacy industrial controllers and retrofit data acquisition upgrades requiring drop-in compatibility with existing 8/16-bit bus architectures.
Availability
AD574AJPZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, avionics ground-support systems, and medical diagnostic signal acquisition requiring stable component supply and long-lifecycle support.
Supply support for AD574AJPZ-REEL 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement, industrial automation, and communications.
The AD574AJPZ-REEL belongs to Analog Devices' legacy high-accuracy SAR ADC product line, designed specifically for applications demanding guaranteed monotonicity, integrated reference stability, and direct microprocessor bus compatibility without external support ICs.
FAQ
What is the operating temperature range for the AD574AJPZ-REEL?
The AD574AJPZ-REEL is rated for 0°C to +70°C operation. This commercial-grade temperature specification is confirmed in the Ordering Guide and applies specifically to the JPZ (PLCC) variant with J-grade performance-±1/2 LSB linearity and 12-bit no-missing-codes are guaranteed across this full range.
Does the AD574AJPZ-REEL require external calibration components?
The AD574AJPZ-REEL includes on-chip trimmed thin-film resistors and a factory-calibrated 10.00 V reference, so zero and full-scale trims are optional. For AD574AJPZ-REEL, unipolar offset trim (Pin 12) and full-scale trim (50 Ω resistor between Pins 8 and 10) are only needed if tighter than ±1/2 LSB offset or ±0.25% FS error is required-most applications operate without them.
Can the AD574AJPZ-REEL interface directly with an 8-bit microprocessor bus?
Yes-the AD574AJPZ-REEL supports native 8-bit bus interfacing via its 12/8 and A0 pins. When 12/8 is tied to Digital Common, data appears as two consecutive 8-bit bytes: A0 = 0 enables DB11–DB4 (MSB byte), and A0 = 1 enables DB3–DB0 followed by four trailing zeroes-enabling direct connection to 8-bit data buses without external latches or buffers.
What are the absolute maximum supply voltages for the AD574AJPZ-REEL?
The AD574AJPZ-REEL has absolute maximum ratings of VCC = +16.5 V, VEE = –16.5 V, and VLOGIC = +7 V referenced to Digital Common. These limits are independent of operating grade and apply to the AD574AJPZ-REEL PLCC package; exceeding them risks permanent damage per the Absolute Maximum Ratings table.
Is the internal reference of the AD574AJPZ-REEL suitable for driving external circuitry?
The AD574AJPZ-REEL's internal reference can source up to 1.5 mA, sufficient for the internal 5 kΩ reference input resistor (0.5 mA) and bipolar offset resistor (1 mA) under ±15 V supplies. However, if external loads vary during conversion or ±12 V supplies are used, Analog Devices recommends buffering the REF OUT with an op amp-unbuffered use may degrade linearity and cause missing codes.
AD574AJPZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±11.4V ~ 16.5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD574AJPZ-REEL FAQ
1.How can I place an order for AD574AJPZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD574AJPZ-REEL 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 AD574AJPZ-REEL reliable?
The price and inventory of AD574AJPZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD574AJPZ-REEL is usually 5 days.
3.What payment methods are accepted for AD574AJPZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD574AJPZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD574AJPZ-REEL?
AD574AJPZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD574AJPZ-REEL 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 AD574AJPZ-REEL?
For technical support, including AD574AJPZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD574AJPZ-REEL requirements.
6.How does Aetrix verify that AD574AJPZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD574AJPZ-REEL 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 AD574AJPZ-REEL meets industry standards.
7.What is the process for return or replacement of AD574AJPZ-REEL?
All AD574AJPZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD574AJPZ-REEL, 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 AD574AJPZ-REEL part is unused and in its original packaging.
Return procedure for AD574AJPZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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