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Analog Devices Inc. AD7569BR-REEL
- Part No.:
- AD7569BR-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Specialized
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD7569BR-REEL.pdf
- Description:
- IC INTERFACE SPECIALIZED 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,768
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Product details
Overview
AD7569BR-REEL from Analog Devices is a complete, monolithic 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 bus 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 via RANGE/VSS pins. Used in embedded data acquisition, industrial sensor interfacing, and closed-loop control systems.
For engineers reviewing the AD7569BR-REEL datasheet, AD7569BR-REEL pinout, AD7569BR-REEL application, or AD7569BR-REEL equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and validated alternative parts - all grounded in Analog Devices' official REV. B specification and ordering guide.
Technical Context
The AD7569BR-REEL implements an LC2MOS mixed-signal architecture combining precision bipolar circuitry for analog accuracy with low-power CMOS logic for digital control. Its ADC uses internal bandgap-referenced successive approximation with 200 kHz input bandwidth and 2 µs conversion time (external clock), while its DAC employs voltage-mode R-2R ladder with PNP current sources and buffered op-amp output.
Digital interface timing is optimized for compatibility with 8-bit microprocessors: bus access/relinquish times <75 ns, WR pulse width <80 ns, and asynchronous RESET clears DAC register to 0x00 and deasserts INT. Range selection (via RANGE/VSS) simultaneously configures both ADC input and DAC output voltage spans and determines data coding (binary for VSS = 0 V; two's complement for VSS = –5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - defines quantization step size: 4.88 mV (0–1.25 V range), 9.76 mV (0–2.5 V or ±1.25 V), or 19.5 mV (±2.5 V) |
| ADC Conversion Time | 2 µs max (with 5 MHz external clock) - enables sampling rates up to 400 kHz for real-time signal capture |
| DAC Settling Time | 2 µs max (±1/2 LSB, positive full-scale change) - ensures stable analog output within one microprocessor bus cycle |
| Total Unadjusted Error (DAC) | ±2 LSB max (A/B grade, +25°C) - includes reference, offset, gain, and linearity errors; eliminates need for system-level calibration |
| Signal-to-Noise Ratio | 46 dB min (100 kHz input, 400 kHz sampling) - supports dynamic signal fidelity in DSP-coupled applications |
| Supply Voltage Range | +4.75 V to +5.25 V (VDD); –4.75 V to –5.25 V (VSS, dual supply) - compatible with standard ±5 V and +5 V industrial power rails |
| Operating Temperature | –40°C to +85°C (B grade) - qualified for industrial environments without derating |
Pinout & Package
AD7569BR-REEL is packaged in a 24-terminal SOIC (Small Outline Integrated Circuit) with 0.3" body width and standard JEDEC MS-012AC footprint. Pin assignments are identical across SOIC, DIP, and PLCC variants per Analog Devices REV. B documentation.
| 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 system analog ground plane |
| VOUT | Buffered DAC output voltage | Delivers programmable ranges (0–1.25 V, 0–2.5 V, ±1.25 V, ±2.5 V); drives 2 kΩ || 100 pF load with ≤2 µs settling |
| VSS | Negative supply / range configuration | 0 V for unipolar operation (binary coding); –5 V for bipolar operation (two's complement coding); selects output/input span with RANGE |
| RANGE | Range selection input | Logic level (0 or 1) combined with VSS sets full-scale range and data format; no external components required |
| RESET | Asynchronous active-low reset | Clears DAC register to 0x00 (0 V unipolar, –FS bipolar); deasserts INT; used for system initialization or fault recovery |
| DB0–DB7 | 8-bit bidirectional data bus | Parallel interface for loading DAC data or reading ADC result; TTL/CMOS-compatible thresholds (VIL ≤ 0.8 V, VIH ≥ 2.4 V) |
| WR | Edge-triggered write strobe | Rising edge latches DB0–DB7 into DAC register; requires CS active low; timing t1 ≥ 80 ns (B grade) |
| CS | Chip select input | Active-low enable for digital interface; gates RD/WR access and controls INT release on rising edge |
| RD | Active-low read strobe | Reads ADC conversion result from DB0–DB7; in Mode 2, falling edge initiates conversion |
| ST | Start conversion trigger | Falling edge initiates ADC sampling; independent of CS; drives BUSY low immediately |
| BUSY | Active-low conversion status | Indicates ongoing ADC conversion; transitions high when conversion completes and data is ready |
| INT | Active-low interrupt output | Signals ADC completion; cleared by rising edge of CS or RD, or low pulse on RESET |
| CLK | External clock input | Accepts TTL-compatible 5 MHz signal for precise conversion timing; internal RC oscillator option available |
| VIN | ADC analog input | Accepts same programmable ranges as VOUT; input impedance >100 kΩ; capacitance 10 pF typical |
| AGNDADC | Analog ground for ADC section | Independent ground return prevents DAC switching noise from corrupting ADC sampling |
| DGND | Digital ground | Common reference for all logic signals; must be connected to AGNDDAC/AGNDADC at single point per layout best practice |
| VDD | Positive supply voltage | +5 V ±5%; powers analog and digital sections; internal bandgap reference derived from VDD |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bandgap reference | 1.25 V ±0.5% initial accuracy with <10 ppm/°C tempco - eliminates external reference and trimming components |
| Programmable analog ranges | Four configurations (0–1.25 V, 0–2.5 V, ±1.25 V, ±2.5 V) selected by two pins - reduces BOM count and board space vs. discrete range-switching circuits |
| Microprocessor-optimized timing | Bus access <75 ns, WR pulse <80 ns - interfaces directly with Z80, 8051, and 68000 families without wait states |
| Single-chip analog I/O | ADC + DAC + T/H + ref + buffer + logic in one 24-pin SOIC - replaces 5+ discrete ICs and associated passives in legacy designs |
| Industrial temperature grade | –40°C to +85°C operation (B version) - qualified for factory automation, motor control, and test equipment without thermal derating |
Applications
| Industrial Data Acquisition | Embedded Sensor Interface |
|---|---|
|
Use Scenario: Real-time monitoring of pressure, temperature, and flow sensors in PLC I/O modules. IC Role / Device Role / Timing Role: ADC digitizes analog sensor outputs; DAC generates calibrated 4–20 mA loop current setpoints via external op-amp; synchronized by shared CLK. Use Value: Eliminates separate ADC/DAC/reference chips and reduces calibration effort - total unadjusted error ≤±2 LSB ensures <0.1% FS accuracy over temperature. |
Use Scenario: Battery-powered environmental sensor node with local analog conditioning and microcontroller-based processing. IC Role / Device Role / Timing Role: ADC samples conditioned sensor signals; DAC provides reference voltage for comparator-based threshold detection; RESET enables low-power wake-up. Use Value: Single +5 V supply operation and 13 mA IDD enable compact, low-cost design; 2 µs conversion supports 100+ channel scanning at 50 kSPS aggregate rate. |
| Closed-Loop Motor Control | Test Equipment Signal Generation |
|
Use Scenario: Position/velocity feedback loop in servo drive where ADC reads encoder analog outputs and DAC commands current amplifier. IC Role / Device Role / Timing Role: ADC captures analog tachometer or resolver signals; DAC outputs precise torque command voltage; RANGE/VSS configures ±2.5 V bipolar range for bidirectional control. Use Value: 46 dB SNR and 48 dB THD support accurate velocity estimation; 2 µs DAC settling enables sub-10 µs control loop updates. |
Use Scenario: Portable waveform generator producing calibrated DC offsets, ramps, and low-frequency sine waves for bench testing. IC Role / Device Role / Timing Role: DAC generates programmable output voltages; ADC verifies output accuracy via internal feedback path; INT signals completion for software-controlled sequencing. Use Value: On-chip reference and <±2 LSB total error allow traceable calibration without external standards; SOIC package enables compact handheld form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog I/O applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7569BN | Same core functionality; plastic DIP (N-24) package instead of SOIC (R-24); identical B-grade temp range (–40°C to +85°C) and ±0.5 LSB relative accuracy | Through-hole assembly; larger PCB footprint; no reflow compatibility | Select AD7569BN only for legacy through-hole production or prototyping with breadboard-friendly DIP sockets |
| AD7669AR | Dual DAC output (VOUTA/VOUTB); same ADC specs; adds A/B pin for DAC selection; higher IDD (18 mA vs. 13 mA); identical SOIC-24 package and B-grade rating | Required for applications needing two independent analog outputs (e.g., differential signaling, stereo audio, dual-axis control) | Choose AD7669AR when dual DAC channels are essential; otherwise AD7569BR-REEL offers lower power and simpler control for single-output systems |
Compared with AD7569BN and AD7669AR, the AD7569BR-REEL provides optimal balance of surface-mount compatibility, industrial temperature operation, and single-DAC simplicity - reducing PCB area and power while maintaining ±0.5 LSB linearity and 2 µs timing performance.
Availability
AD7569BR-REEL is available at Aetrix Electronics and suitable for industrial data acquisition, embedded sensor interface, and closed-loop motor control applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7569BR-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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD7569 belongs to Analog Devices' legacy LC2MOS analog I/O family, designed to replace multi-chip discrete solutions with single-package integration for cost-sensitive, space-constrained industrial and instrumentation systems.
FAQ
What is the operating temperature range for AD7569BR-REEL?
The AD7569BR-REEL is rated for industrial operation from –40°C to +85°C (B grade), as confirmed in the Analog Devices REV. B Ordering Guide. This range applies to all electrical specifications including total unadjusted error (±2 LSB max), settling time (2 µs), and supply current (13 mA max). The part is not qualified for extended temperature ranges (–55°C to +125°C) unless marked with S/T suffixes.
Does AD7569BR-REEL require external components for basic operation?
No - the AD7569BR-REEL is a complete analog I/O system requiring no external trims, references, or passive components for fundamental operation. Its on-chip 1.25 V bandgap reference, DAC output amplifier, and track/hold circuit eliminate the need for external precision resistors, op-amps, or voltage references. Only decoupling capacitors (0.1 µF ceramic near VDD/DGND and AGNDDAC/AGNDADC) are recommended per Analog Devices layout guidelines.
How does the RANGE pin configure input/output voltage spans on AD7569BR-REEL?
The RANGE pin works in conjunction with VSS to select one of four analog spans: with VSS = 0 V, RANGE = 0 sets 0–1.25 V and RANGE = 1 sets 0–2.5 V; with VSS = –5 V, RANGE = 0 sets ±1.25 V and RANGE = 1 sets ±2.5 V. This dual-pin configuration simultaneously defines both ADC input range and DAC output range, ensuring consistent scaling across the I/O path without software recalibration.
What is the maximum sampling rate achievable with AD7569BR-REEL's ADC?
With a 5 MHz external clock, the AD7569BR-REEL achieves a 2 µs conversion time, enabling a theoretical maximum sampling rate of 500 kSPS. However, practical sustained rates are limited to 400 kHz due to timing margins specified in the REV. B Timing Characteristics table (e.g., t13 = 90 ns data access time at CL = 100 pF). This 400 kHz rate is validated for SNR (46 dB min) and THD (48 dB max) performance with 100 kHz full-scale inputs.
Can AD7569BR-REEL operate from a single +5 V supply only?
Yes - the AD7569BR-REEL fully supports single +5 V operation (VDD = +5 V, VSS = 0 V) for unipolar ranges (0–1.25 V or 0–2.5 V). In this mode, digital inputs use binary coding, and the output amplifier delivers positive-only voltages. The part draws 13 mA IDD and maintains all specified AC/DC performance, including 2 µs DAC settling and ±2 LSB total unadjusted error, without requiring negative supply rails.
AD7569BR-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LC²MOS
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Analog I/O
- Interface:
- Bus
- Voltage - Supply:
- 4.75V ~ 5.25V
- Supplier Device Package:
- 24-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
AD7569BR-REEL FAQ
1.How can I place an order for AD7569BR-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7569BR-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 AD7569BR-REEL reliable?
The price and inventory of AD7569BR-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7569BR-REEL is usually 5 days.
3.What payment methods are accepted for AD7569BR-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7569BR-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7569BR-REEL?
AD7569BR-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7569BR-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 AD7569BR-REEL?
For technical support, including AD7569BR-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7569BR-REEL requirements.
6.How does Aetrix verify that AD7569BR-REEL is sourced from the original manufacturer or authorized distributors?
All AD7569BR-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 AD7569BR-REEL meets industry standards.
7.What is the process for return or replacement of AD7569BR-REEL?
All AD7569BR-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7569BR-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 AD7569BR-REEL part is unused and in its original packaging.
Return procedure for AD7569BR-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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