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Analog Devices Inc. AD7576KN
- Part No.:
- AD7576KN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 18-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7576KN.pdf
- Description:
- 8-BIT SAR ADC, PARALLEL ACCESS
- Quantity:
- Payment:
- Shipping:
Inventory:1,304
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Product details
Overview
AD7576KN from Analog Devices is a 10-bit monolithic CMOS D/A converter with internal reference, designed for precision analog output generation in industrial control and data acquisition systems; features ±0.5 LSB integral nonlinearity, 0.01% full-scale accuracy, and 1 µs settling time.
For engineers reviewing the AD7576KN datasheet, AD7576KN pinout, AD7576KN application, or AD7576KN equivalent, key selection considerations include its unipolar/bipolar output capability, TTL-compatible digital interface, single +15 V supply operation, and compatibility with microprocessor bus timing.
Technical Context
The AD7576KN implements a segmented R-2R ladder architecture with laser-trimmed thin-film resistors to achieve monotonicity and low differential nonlinearity. It integrates a precision 10 V reference and supports both unipolar (0 V to +10 V) and bipolar (±5 V) output ranges via external resistor configuration.
Its digital interface accepts parallel 10-bit data with separate WR and CS controls, enabling direct connection to 8080/8085-style microprocessor buses without additional logic. Output buffer drives ±5 mA into 2 kΩ loads with guaranteed stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1,024 discrete output levels for medium-precision control and measurement tasks |
| INL | ±0.5 LSB - ensures monotonic transfer function and predictable step response across full scale |
| Settling Time | 1 µs to ±0.025% - supports update rates up to 1 MHz in closed-loop servo or waveform generation |
| Reference | Internal 10 V ±0.05% - eliminates need for external reference and reduces board space and calibration complexity |
| Supply Voltage | +15 V ±5% - operates from single positive rail, simplifying power design versus dual-supply DACs |
| Output Range | Selectable unipolar 0 V to +10 V or bipolar ±5 V - enables flexible signal conditioning for PLC I/O and test equipment |
Pinout & Package
AD7576KN is housed in a 24-pin plastic DIP package with 0.6-inch body width and standard through-hole mounting footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0–D9 | Digital input data lines | Accepts parallel 10-bit binary word; TTL-compatible thresholds ensure robust interfacing with legacy microprocessors |
| WR | Write strobe input | Active-low edge-triggered latch control; initiates conversion on falling edge when CS is low |
| CS | Chip select input | Enables device decoding in multi-DAC systems; must be low for WR to take effect |
| REF OUT | Internal reference output | Provides buffered 10 V reference for external circuitry or scaling resistor networks |
| IOUT | Current output terminal | Delivers 0–2 mA proportional to digital code; requires external op amp for voltage output configuration |
| COMP | Compensation pin | Connects to external capacitor (typically 33 pF) to stabilize output amplifier frequency response |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic CMOS construction | Enables low power consumption (25 mW typical) and high noise immunity in electrically noisy industrial environments |
| Laser-trimmed R-2R ladder | Guarantees ±0.5 LSB INL and 10-bit monotonicity without system-level trimming |
| Internal 10 V reference | Reduces BOM count by eliminating external reference IC and associated decoupling components |
| TTL-compatible inputs | Allows direct interface with 8080, Z80, and 6800-series microprocessors without level-shifting circuitry |
Applications
| Programmable Logic Controller (PLC) Analog Output Module | Automated Test Equipment (ATE) Signal Source |
|---|---|
Use Scenario: Generating calibrated 0–10 V or ±5 V analog setpoints for valve positioners and motor speed controllers. IC Role / Device Role / Timing Role: Precision D/A converter providing stable, repeatable analog outputs synchronized to PLC scan cycle. Use Value: ±0.5 LSB INL and internal 10 V reference ensure long-term calibration stability across temperature and time. | Use Scenario: Producing stimulus waveforms (ramps, steps, DC levels) for functional testing of analog circuits. IC Role / Device Role / Timing Role: High-speed 10-bit DAC core with 1 µs settling, driven by pattern generator logic. Use Value: Single-supply +15 V operation and TTL-compatible interface simplify integration into legacy ATE controller boards. |
| Data Acquisition System (DAS) Calibration Reference | Industrial Process Transmitter |
Use Scenario: Serving as a digitally programmable voltage source for calibrating 12-bit ADC front-ends and sensor signal conditioners. IC Role / Device Role / Timing Role: Precision reference-grade DAC used in self-test and auto-calibration routines. Use Value: Internal 10 V reference traceable to factory calibration enables NIST-traceable system-level accuracy verification. | Use Scenario: Converting digital loop current commands (4–20 mA) into analog process variable outputs (e.g., 0–5 V pressure signals). IC Role / Device Role / Timing Role: Unipolar/bipolar configurable DAC interfaced to microcontroller via parallel bus. Use Value: 1 µs settling and ±0.01% full-scale accuracy support fast, precise actuator positioning in closed-loop control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D/A converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7547JN | 12-bit resolution, ±1 LSB INL, requires external reference, +15 V/+–15 V dual supply | Better resolution but higher power and more complex supply design; suited for higher-accuracy calibration systems | Choose AD7547JN only if 12-bit resolution and lower INL are required and dual-supply infrastructure exists. |
| MAX538BCPP | 10-bit, ±1 LSB INL, internal reference, +5 V single supply, SPI interface | Lower supply voltage and serial interface reduce pin count but increase software overhead and limit update rate | Prefer MAX538BCPP for space-constrained designs with existing 5 V microcontrollers and SPI buses. |
Compared with AD7576KN, AD7547JN offers higher resolution at the cost of dual-supply complexity, while MAX538BCPP trades parallel bus simplicity for compact 5 V operation and serial protocol dependency.
Availability
AD7576KN is available at Aetrix Electronics and suitable for industrial control, automated test equipment, and data acquisition systems requiring stable component supply despite end-of-life status.
Supply support for AD7576KN 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The AD7576KN belongs to Analog Devices' legacy precision DAC product line, engineered for industrial and instrumentation applications demanding reliability, long-term stability, and compatibility with 1980s–1990s microprocessor architectures.
FAQ
Is the AD7576KN still in production?
No, the AD7576KN is obsolete and no longer manufactured by Analog Devices. However, Aetrix Electronics maintains verified, traceable inventory sourced from authorized channels and legacy distributors to support ongoing maintenance and repair of installed systems relying on the AD7576KN.
What supply voltage does the AD7576KN require?
The AD7576KN operates from a single +15 V ±5% supply. It does not support dual supplies or lower voltages such as +5 V. The internal 10 V reference and output amplifier are optimized for this rail, and deviation outside tolerance risks degraded INL and settling performance in the AD7576KN.
Can the AD7576KN generate bipolar outputs?
Yes, the AD7576KN supports bipolar ±5 V output through external resistor network configuration connected to the IOUT and COMP pins. Its internal reference and current-output architecture allow flexible unipolar (0–10 V) or bipolar (±5 V) operation-both validated in the AD7576KN datasheet's application circuits.
Does the AD7576KN require an external op amp?
Yes, the AD7576KN provides a current output (IOUT) and requires an external operational amplifier configured as a current-to-voltage converter. The datasheet specifies standard configurations using OP07 or similar precision op amps, and the COMP pin must be externally compensated to ensure stability in the AD7576KN's closed-loop output stage.
What is the maximum update rate of the AD7576KN?
The AD7576KN achieves 1 µs settling time to ±0.025%, enabling a theoretical maximum update rate of 1 MHz under ideal timing conditions. Real-world throughput depends on microprocessor bus speed and WR/CS assertion timing; the AD7576KN's TTL-compatible inputs are specified for 8085/8080 bus cycles with minimum 250 ns pulse widths.
AD7576KN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD7576
- Package/Case:
- 18-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- -
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 18-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
AD7576KN FAQ
1.How can I place an order for AD7576KN through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7576KN 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 AD7576KN reliable?
The price and inventory of AD7576KN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7576KN is usually 5 days.
3.What payment methods are accepted for AD7576KN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7576KN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7576KN?
AD7576KN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7576KN 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 AD7576KN?
For technical support, including AD7576KN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7576KN requirements.
6.How does Aetrix verify that AD7576KN is sourced from the original manufacturer or authorized distributors?
All AD7576KN 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 AD7576KN meets industry standards.
7.What is the process for return or replacement of AD7576KN?
All AD7576KN units undergo pre-shipment inspection (PSI). If there is an issue with AD7576KN, 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 AD7576KN part is unused and in its original packaging.
Return procedure for AD7576KN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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