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Analog Devices Inc. AD574AKPZ-REEL
- Part No.:
- AD574AKPZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
AD574AKPZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,716
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Product details
Overview
AD574AKPZ-REEL from Analog Devices is a monolithic 12-bit successive-approximation analog-to-digital converter (ADC) with on-chip reference, clock, and three-state data outputs. It delivers ±1/2 LSB linearity error over 0°C to +70°C, supports unipolar (0 V to +10 V or 0 V to +20 V) and bipolar (±5 V or ±10 V) input ranges, and achieves 35 µs max 12-bit conversion time. It is used in precision data acquisition systems requiring self-contained, high-accuracy digitization without external DAC or timing components.
For engineers reviewing the AD574AKPZ-REEL datasheet, AD574AKPZ-REEL pinout, AD574AKPZ-REEL application, or AD574AKPZ-REEL equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, internal 10.00 V ±0.2% Zener reference, ±1/2 LSB linearity over full temperature range, and dual-mode (12-/8-bit) parallel interface compatibility with 8-bit microprocessor buses.
Technical Context
The AD574AKPZ-REEL integrates a 12-bit current-output DAC, temperature-compensated buried Zener reference, comparator, and successive-approximation register (SAR) in a single chip. Its SAR architecture sequences MSB-to-LSB bit testing using internal DAC current summation against the analog input, delivering final code within ±1/2 LSB quantization uncertainty.
It supports flexible digital interfacing via CE/CS/R/C/A0/12/8 control logic, enabling either full 12-bit parallel readout or segmented 8-bit+4-bit access. The STS output provides end-of-conversion status, and the internal reference supplies up to 1.5 mA while maintaining stability across ±12 V or ±15 V supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes with nominal 2.44 mV LSB for 10 V span |
| Linearity Error (TMIN–TMAX) | ±1/2 LSB - guarantees monotonic transfer function and correct code assignment across full 0°C to +70°C range |
| No Missing Codes | 12 bits - all 4096 codes appear in monotonic sequence over full operating temperature range |
| Internal Reference Voltage | 10.00 V ±0.2% - trimmed buried Zener enables absolute calibration without external reference |
| Conversion Time | 35 µs max (12-bit) - defines minimum sampling interval for DC to ~1.5 Hz signals without sample-and-hold |
| Power Supply Range | VCC = +11.4 V to +16.5 V; VEE = –11.4 V to –16.5 V; VLOGIC = +4.5 V to +5.5 V - supports ±12 V or ±15 V system rails |
| Full-Scale Calibration Error | 0.125% of FS max - corresponds to ≤5 LSB error at 10 V full scale, trimmable to zero |
Pinout & Package
AD574AKPZ-REEL is packaged in a 28-lead PLCC (Plastic Leaded Chip Carrier), designated P-28A per Analog Devices ordering guide. This surface-mount package features gull-wing leads, JEDEC MO-118 compliant footprint, and thermal characteristics suitable for industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | Digital Common (DC) | Reference ground for logic inputs/outputs; must be tied to system digital ground |
| 9 | Analog Common (AC) | High-fidelity reference ground for internal reference and analog circuitry; separate from DC at board level |
| 8, 10 | REF IN / REF OUT | Reference input node and buffered 10 V output; requires fixed 50 Ω resistor between pins for full-scale calibration |
| 12 | BIP OFF | Bipolar offset adjustment terminal; grounded for unipolar mode, connected to REF OUT for bipolar mode |
| 13, 14 | 10VIN / 20VIN | Dedicated analog input terminals for 10 V or 20 V unipolar spans; input impedance = 5 kΩ or 10 kΩ respectively |
| 2–7, 16–19, 21–24, 27 | DB0–DB11 | Three-state parallel digital outputs; MSB (DB11) to LSB (DB0); output format depends on 12/8 and A0 control states |
| 28 | STS | Status output - high during conversion, low when result ready and buffers enabled |
| CE, CS, R/C, A0, 12/8 | Control Inputs | Enable, select, and mode configuration logic; 12/8 must be hard-wired to VLOGIC or DC (not TTL-compatible) |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 10 V reference | Eliminates need for external precision reference and reduces BOM count and layout sensitivity |
| Guaranteed 12-bit no-missing-codes | Ensures monotonicity and deterministic code mapping across full temperature range - critical for closed-loop control |
| 12-/8-bit selectable interface | Enables direct connection to 8-bit microprocessor buses without glue logic or data latches |
| Internal clock and SAR | Removes requirement for external clock generator or timing controller - simplifies system timing design |
| Unipolar/bipolar input flexibility | Single device supports both 0–10 V sensor interfaces and ±10 V industrial transducer inputs via pin-strapping |
Applications
| Industrial Process Monitoring | Test & Measurement Equipment |
|---|---|
Use Scenario: Digitizing 4–20 mA current loop outputs converted to 0–10 V via precision shunt in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC performing single-shot or polled conversion with 35 µs latency; interfaces directly to 8-bit MCU via AO/12/8 control. Use Value: ±1/2 LSB linearity ensures <0.012% measurement uncertainty across 0–70°C ambient, meeting IEC 61000-6-2 immunity requirements. | Use Scenario: Capturing calibrated voltage standards in portable multimeters and automated calibration benches. IC Role / Device Role / Timing Role: High-accuracy digitizer with internal 10.00 V reference serving as traceable measurement core; operates in unipolar 0–10 V mode. Use Value: 0.125% full-scale calibration error (≤5 LSB) and ±1/2 LSB linearity enable Class 0.02 accuracy without field recalibration. |
| Avionics Sensor Interface | Medical Instrumentation |
Use Scenario: Converting ±5 V accelerometer and gyroscope outputs in flight data recorders with extended temperature tolerance. IC Role / Device Role / Timing Role: Bipolar-mode ADC handling dynamic sensor signals; uses internal reference and STS handshake for deterministic timing. Use Value: Guaranteed 12-bit no-missing-codes prevents code dropout during vibration-induced thermal cycling from –55°C to +125°C (S-grade variant context). | Use Scenario: Sampling ECG amplifier outputs in patient monitors where baseline stability and low noise are critical. IC Role / Device Role / Timing Role: Precision front-end ADC operating in unipolar 0–5 V mode with external op-amp driver; relies on low-offset internal reference. Use Value: Unipolar offset ≤±1 LSB (≤1.22 mV) and full-scale tempco ≤2 ppm/°C minimize drift-induced baseline wander over 8-hour monitoring sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7874KN | 12-bit, 100 kSPS, serial SPI interface; no internal reference; requires external 2.5 V ref | Suited for space-constrained designs needing lower power and digital isolation; lacks parallel bus compatibility | Select when system uses SPI master and can provide stable 2.5 V reference; not drop-in for AD574AKPZ-REEL's parallel interface |
| MAX195BCNG+ | 16-bit, 100 kSPS, internal reference; ±2 LSB INL; 5 V single-supply operation | Targets higher-resolution applications with lower supply complexity; no ±15 V support | Choose for improved resolution and single-supply convenience where ±15 V rails are unavailable; requires PCB redesign |
Compared with AD7874KN and MAX195BCNG+, the AD574AKPZ-REEL uniquely combines parallel 12-bit interface, integrated 10 V reference, ±15 V supply support, and guaranteed 12-bit monotonicity - making it optimal for legacy industrial controllers and test equipment requiring minimal interface overhead and proven long-term stability.
Availability
AD574AKPZ-REEL is available at Aetrix Electronics and suitable for industrial process monitoring, test & measurement equipment, avionics sensor interfaces, and medical instrumentation requiring stable component supply across extended product lifecycles.
Supply support for AD574AKPZ-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 ICs for precision measurement and control.
The AD574A product line was designed for self-contained, high-accuracy data acquisition in industrial, military, and instrumentation systems where integration, reliability, and guaranteed specifications over temperature are critical.
FAQ
What is the operating temperature range for AD574AKPZ-REEL?
The AD574AKPZ-REEL is rated for 0°C to +70°C operation, consistent with the K-grade specification in the AD574A family. This grade guarantees ±1/2 LSB linearity error and 12-bit no-missing-codes performance across the full range, making it suitable for commercial and industrial environments without extended thermal stress.
Does AD574AKPZ-REEL require external components to operate?
No, the AD574AKPZ-REEL requires no external DAC, clock, or reference components to perform complete 12-bit conversion. It integrates a temperature-compensated 10.00 V Zener reference, internal clock, and SAR logic. Only passive trimming resistors (for offset/full-scale calibration) and supply decoupling capacitors are needed for basic operation.
How does the 12/8 pin affect data output formatting on AD574AKPZ-REEL?
When 12/8 is tied to VLOGIC, AD574AKPZ-REEL outputs a single 12-bit word on DB11–DB0. When tied to Digital Common, it outputs two 8-bit bytes: DB11–DB4 (MSBs) when A0 = 0, and DB3–DB0 followed by four zeros when A0 = 1 - enabling seamless interface to 8-bit microprocessor data buses without external latches.
Can AD574AKPZ-REEL operate from ±12 V supplies instead of ±15 V?
Yes, AD574AKPZ-REEL supports VCC = +11.4 V to +16.5 V and VEE = –11.4 V to –16.5 V, fully covering ±12 V operation. However, the internal reference output current drops at lower supply voltages; Analog Devices recommends buffering the REF OUT with an op amp (e.g., AD707) when driving external loads across the full temperature range on ±12 V rails.
What is the purpose of the STS pin on AD574AKPZ-REEL?
The STS (Status) pin on AD574AKPZ-REEL is an active-high open-collector output that goes high at conversion start and returns low when conversion completes and output data is valid. It synchronizes read operations and prevents bus contention by signaling when DB11–DB0 buffers are enabled - essential for reliable handshaking with microcontrollers and DMA controllers.
AD574AKPZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
AD574AKPZ-REEL FAQ
1.How can I place an order for AD574AKPZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD574AKPZ-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 AD574AKPZ-REEL reliable?
The price and inventory of AD574AKPZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD574AKPZ-REEL is usually 5 days.
3.What payment methods are accepted for AD574AKPZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD574AKPZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD574AKPZ-REEL?
AD574AKPZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD574AKPZ-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 AD574AKPZ-REEL?
For technical support, including AD574AKPZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD574AKPZ-REEL requirements.
6.How does Aetrix verify that AD574AKPZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD574AKPZ-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 AD574AKPZ-REEL meets industry standards.
7.What is the process for return or replacement of AD574AKPZ-REEL?
All AD574AKPZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD574AKPZ-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 AD574AKPZ-REEL part is unused and in its original packaging.
Return procedure for AD574AKPZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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