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Analog Devices Inc. AD7569JN
- Part No.:
- AD7569JN
- Manufacturer:
- Analog Devices Inc.
- Category:
- ADCs/DACs - Special Purpose
- Package:
- 24-DIP (0.300", 7.62mm)
- Datasheet:
-
AD7569JN.pdf
- Description:
- IC INTERFACE SPECIALIZED 24DIP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AD7569JN from Analog Devices is a complete, single-chip 8-bit analog I/O system integrating a 2 µs successive-approximation ADC with track/hold, a 1 µs settling DAC with output amplifier, on-chip 1.25 V bandgap reference, and fast 8-bit parallel microprocessor interface. It operates from single +5 V or dual ±5 V supplies and supports programmable unipolar (0 to +1.25 V / 0 to +2.5 V) or bipolar (±1.25 V / ±2.5 V) ranges - used in industrial data acquisition, sensor interface, and closed-loop control systems.
For engineers reviewing the AD7569JN datasheet, AD7569JN pinout, AD7569JN application, or AD7569JN equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and two validated alternative parts - all grounded in the official REV. B datasheet and Analog Devices' LC2MOS process specifications.
Technical Context
The AD7569JN implements an integrated analog front-end where the ADC and DAC share the same on-chip 1.25 V bandgap reference, ensuring matched gain and temperature tracking. Its LC2MOS process combines precision bipolar circuitry for analog accuracy with low-power CMOS logic for digital interfacing.
Digital control uses asynchronous, edge-triggered signals: WR (rising-edge write), ST (falling-edge conversion start), and CS/RD for bus arbitration. The device supports Mode 1 interface timing with sub-80 ns write pulse width and <120 ns data access time - compatible with 80Cxx, Z80, and 6800-family microprocessors without wait states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output levels; 1 LSB = 4.88 mV (0–1.25 V range) or 9.76 mV (0–2.5 V/±1.25 V ranges) |
| ADC Conversion Time | 2 µs max with external 5 MHz clock - enables up to 500 kSPS sampling without pipeline latency |
| DAC Settling Time | 2 µs max to ±1/2 LSB (positive full-scale step) - supports real-time waveform generation at >100 kHz update rates |
| Total Unadjusted Error (DAC) | ±2 LSB typ - includes reference, offset, gain, and linearity errors; no external trimming required |
| Signal-to-Noise Ratio | 44 dB min (20 kHz sine, 400 kHz sampling) - corresponds to ~7.3 effective bits for dynamic signal fidelity |
| Supply Range | +4.75 V to +5.25 V (VDD); 0 V or –4.75 V to –5.25 V (VSS) - supports both single-supply 0–2.5 V and dual-supply ±2.5 V operation |
| Operating Temperature | 0°C to +70°C (J-grade) - qualified for commercial instrumentation and embedded control environments |
Pinout & Package
AD7569JN is packaged in a 24-pin, 0.3" wide plastic DIP (N-24 package). All pins are electrically defined per the official REV. B datasheet and validated for J-grade operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGNDDAC | Analog ground for DAC section | Separate return path minimizes digital noise coupling into DAC output; must be tied to AGNDADC at single point |
| VOUT | Buffered DAC output | Delivers full-scale voltage (0–1.25 V, 0–2.5 V, ±1.25 V, or ±2.5 V) with 1 µs typical settling; drives 2 kΩ || 100 pF load |
| VSS | Negative supply / logic reference | Defines operating mode: 0 V → unipolar binary coding; –5 V → bipolar 2's complement coding and ±V ranges |
| RANGE | Range selection input | Configures both ADC input and DAC output ranges jointly with VSS; TTL/CMOS-compatible logic level |
| RESET | Asynchronous reset (active low) | Clears DAC register to 0x00 (0 V unipolar / –FS bipolar); deasserts INT; no effect on ADC conversion state |
| DB0–DB7 | 8-bit bidirectional data bus | Input for DAC data writes; output for ADC conversion results; latched on rising WR (DAC) or falling RD (ADC) |
| WR | Write strobe (edge-triggered) | Rising edge transfers DB0–DB7 into DAC register; requires CS active low; t1 = 80 ns min pulse width |
| CS | Chip select (active low) | Enables internal logic and bus drivers; must be asserted before WR or RD; controls BUSY/INT timing relationships |
| RD | Read strobe (active low) | Falling edge initiates ADC conversion in Mode 2; rising edge places conversion result on DB0–DB7 bus |
| ST | Start conversion (edge-triggered) | Falling edge triggers ADC sample-and-hold and conversion; not gated by CS - allows precise external timing control |
| BUSY | Conversion status (active low) | Asserted during ADC conversion; falls on ST edge; rises after conversion completes and data is latched |
| INT | Interrupt output (active low) | Signals ADC conversion completion; cleared by rising CS or RD edge, or RESET pulse |
| CLK | External clock input | Accepts TTL/CMOS 5 MHz clock for deterministic 2 µs conversion; internal RC oscillator option available |
| AGNDADC | Analog ground for ADC section | Independent return for ADC input stage; isolation from DGND and AGNDDAC reduces crosstalk |
| VIN | ADC analog input | Accepts same voltage ranges as VOUT (0–1.25 V, 0–2.5 V, ±1.25 V, ±2.5 V); 200 kHz track/hold bandwidth |
| VDD | Positive supply | +4.75 V to +5.25 V; powers analog and digital sections; internal bandgap reference derived from VDD |
| DGND | Digital ground | Return for logic inputs/outputs; must be connected to AGNDs at single-point star ground to avoid noise injection |
Key Features
| Feature | Design Value |
|---|---|
| On-chip bandgap reference | 1.25 V ±0.5% initial accuracy, tempco <25 ppm/°C - eliminates external reference and calibration for most 8-bit applications |
| Integrated track/hold + ADC | 200 ns acquisition time, 2 µs conversion - captures transients up to 200 kHz without external sample-hold circuitry |
| Programmable analog ranges | Single control (RANGE + VSS) selects matching ADC input and DAC output ranges - simplifies system-level range switching |
| Fast microprocessor interface | Bus access <75 ns, write pulse <80 ns - interfaces directly to 8080, Z80, 6800, and 80Cxx families without glue logic |
| LC2MOS process technology | Combines bipolar precision (for ADC/DAC linearity) with CMOS logic density and low power - 13 mA IDD (AD7569), 4 mA ISS |
Applications
| Industrial Data Acquisition | Sensor Signal Conditioning |
|---|---|
Use Scenario: Real-time monitoring of pressure, temperature, and flow sensors in PLC I/O modules. IC Role / Device Role / Timing Role: ADC digitizes conditioned analog sensor outputs; DAC generates calibrated 0–10 V or 4–20 mA loop setpoints. Use Value: Single-chip integration eliminates external op amps, references, and interface logic - reducing BOM count and layout area by >40%. |
Use Scenario: Front-end for strain-gauge bridges and thermocouples requiring offset/gain adjustment and linearization. IC Role / Device Role / Timing Role: DAC provides programmable offset correction; ADC reads bridge output; shared reference ensures ratiometric accuracy. Use Value: Matched DAC/ADC gain (<1% typ) and on-chip reference eliminate drift-induced calibration errors across temperature. |
| Closed-Loop Motion Control | Waveform Generation & Testing |
Use Scenario: Position/velocity feedback and PWM duty-cycle modulation in servo drive controllers. IC Role / Device Role / Timing Role: ADC samples motor current and encoder signals; DAC outputs analog command voltage to power stage. Use Value: 2 µs ADC + 2 µs DAC settling enables control loop updates at 250 kHz - sufficient for high-bandwidth servo response. |
Use Scenario: Low-cost arbitrary waveform generator in benchtop test equipment and educational labs. IC Role / Device Role / Timing Role: DAC produces 0–2.5 V or ±2.5 V waveforms; ADC validates output integrity via internal loopback. Use Value: 44 dB SNR and 48 dB THD support clean 7+ bit sine/square/triangle generation up to 20 kHz fundamental frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog I/O applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7569JR | Same die, SOIC-24 package (R-24); identical electrical specs and timing; 150°C max solder temp rating | Preferred for automated SMT assembly; same footprint as AD7569JN but smaller thermal mass and no lead-forming required | Select AD7569JR when PCB space is constrained or reflow assembly is used; performance and software compatibility are identical. |
| AD7569JP | Same die, PLCC-28 package (P-28A); pin-compatible with AD7569JN except for 4 extra NC pins; same J-grade temp range and specs | Used where higher I/O density or surface-mount reliability is needed; requires different socket or land pattern | Choose AD7569JP for ruggedized industrial boards needing PLCC mechanical retention; verify layout clearance for 28-pin body. |
Compared with AD7569JR and AD7569JP, the AD7569JN offers through-hole DIP mounting for prototyping and legacy systems, while maintaining identical analog performance, timing, and register-level compatibility - making it ideal for lab validation, repair, and low-volume instrumentation builds.
Availability
AD7569JN is available at Aetrix Electronics and suitable for industrial data acquisition, sensor interface, and closed-loop motion control applications requiring stable component supply and long-term obsolescence management.
Supply support for AD7569JN 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 AD7569JN belongs to Analog Devices' legacy LC2MOS analog I/O family, designed specifically for embedded microprocessor systems needing self-contained, calibration-free analog interfacing in commercial temperature environments.
FAQ
What is the maximum sampling rate achievable with the AD7569JN ADC?
The AD7569JN ADC has a maximum conversion time of 2 µs, enabling a theoretical maximum sampling rate of 500 kSPS. This assumes continuous triggering via ST or RD and sufficient bus turnaround time. In practice, with standard 8-bit microprocessor interface timing (e.g., 8080), sustained rates of 300–400 kSPS are achievable without wait states, as confirmed by timing parameters t6–t17 in the REV. B datasheet.
Does the AD7569JN require external components for basic operation?
No, the AD7569JN requires no external components for core functionality: the on-chip bandgap reference, track/hold, output amplifier, and logic interface are fully integrated. Only decoupling capacitors (0.1 µF ceramic near VDD/DGND and AGND pins) and proper grounding are mandatory. External clock components (RCLK/CCLK) are optional - the internal oscillator suffices for most applications.
How does the RANGE pin affect both ADC and DAC operation in the AD7569JN?
The RANGE pin, in conjunction with VSS, jointly configures both the ADC input range and DAC output range per Table I in the datasheet. When VSS = 0 V and RANGE = 0, both operate in 0–1.25 V unipolar mode with binary coding; when VSS = –5 V and RANGE = 1, both operate in ±2.5 V bipolar mode with 2's complement coding - ensuring ratiometric consistency without separate configuration registers.
What is the guaranteed monotonicity behavior of the AD7569JN DAC?
The AD7569JN DAC is guaranteed monotonic across its full 8-bit range, as explicitly stated in the DAC Specifications table under "Guaranteed Monotonic." This is ensured by a differential nonlinearity (DNL) limit of ±1 LSB max (J-version), meaning no code transitions skip or repeat - critical for control loop stability and waveform fidelity.
Can the AD7569JN operate with only a +5 V supply, and what output ranges are supported?
Yes, the AD7569JN operates fully with a single +5 V supply (VDD = +4.75 V to +5.25 V, VSS = 0 V). In this configuration, it supports two unipolar output/input ranges: 0 to +1.25 V (RANGE = 0) and 0 to +2.5 V (RANGE = 1), both using straight binary data coding - ideal for microcontroller-based systems without negative rails.
AD7569JN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LC²MOS
- Package/Case:
- 24-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- -
- Number of Channels:
- -
- Resolution (Bits):
- -
- Sampling Rate (Per Second):
- -
- Data Interface:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-PDIP
AD7569JN FAQ
1.How can I place an order for AD7569JN through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7569JN 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 AD7569JN reliable?
The price and inventory of AD7569JN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7569JN is usually 5 days.
3.What payment methods are accepted for AD7569JN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7569JN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7569JN?
AD7569JN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7569JN 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 AD7569JN?
For technical support, including AD7569JN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7569JN requirements.
6.How does Aetrix verify that AD7569JN is sourced from the original manufacturer or authorized distributors?
All AD7569JN 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 AD7569JN meets industry standards.
7.What is the process for return or replacement of AD7569JN?
All AD7569JN units undergo pre-shipment inspection (PSI). If there is an issue with AD7569JN, 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 AD7569JN part is unused and in its original packaging.
Return procedure for AD7569JN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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