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Analog Devices Inc./Maxim Integrated MX7576KP+
- Part No.:
- MX7576KP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
MX7576KP+.pdf
- Description:
- IC ADC 8BIT SAR 20PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,092
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Product details
Overview
MX7576KP+ from Maxim Integrated is an 8-bit, microprocessor-compatible analog-to-digital converter (ADC) with 10µs conversion time, single +5V supply operation, 0V to 2VREF input range, and PLCC-20 package. It performs successive-approximation conversions with internal sampling (8 samples/conversion), supports ROM and slow-memory interface modes, and targets high-speed data acquisition in embedded control systems.
For engineers reviewing the MX7576KP+ datasheet, MX7576KP+ pinout, MX7576KP+ application, or MX7576KP+ equivalent, key selection considerations include its asynchronous conversion mode (via MODE pin), 100ns data-access time, ±1LSB total unadjusted error, 2MHz external clock requirement, and PLCC-20 footprint compatibility with industrial µP bus interfaces.
Technical Context
The MX7576KP+ uses a successive-approximation register (SAR) architecture with internal DAC and comparator, performing eight analog input samples per conversion cycle - one before each bit decision - eliminating need for external track/hold circuitry. Its internal logic decodes CS and RD to initiate conversions and latch results, while BUSY signals conversion start/end.
It operates in three interface modes: slow-memory (wait-state), ROM (non-blocking read), and asynchronous (MODE = low, continuous conversion). Timing is synchronized to external 2MHz clock or internal oscillator; all digital outputs are three-state latched, enabling direct connection to 8-bit µP data buses without glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for unipolar 0V–2.46V input range |
| Conversion Time | 10µs with 2MHz external clock - enables 100kSPS sustained sampling rate |
| Total Unadjusted Error | ±1LSB max - ensures monotonicity and no missing codes across full temperature range |
| Input Voltage Range | 0V to 2VREF (0V to 2.46V typical) - compatible with standard 1.23V reference sources |
| Data Access Time | 100ns after RD assertion - supports tight timing margins on fast 8-bit µPs like Z-80 or 6502 |
| Supply Voltage | +5V (4.75V–5.25V) - interoperable with TTL/CMOS logic rails and legacy embedded power domains |
| Power Dissipation | 15mW at +5V - suitable for low-power portable and battery-backed data loggers |
Pinout & Package
MX7576KP+ is housed in a 20-pin plastic leaded chip carrier (PLCC) with J-lead profile, designed for surface-mount assembly and reflow compatibility. Pin 1 identifier is marked by a notch in the package corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | AIN | Analog input - accepts 0V to 2VREF unipolar signal; requires ≤2kΩ source impedance for full accuracy |
| 2, 3, 4, 8, 9 | D4–D1, D6, D5 | Three-state data outputs - bits 4–1 and 6–5 of 8-bit parallel result; high-impedance when CS or RD high |
| 5 | CLK | External clock input or internal oscillator node - accepts 2MHz square wave (30–70% duty); internally divided by two |
| 6 | CS | Chip select - active-low enable for device selection and conversion initiation in all interface modes |
| 7 | RD | Read strobe - active-low signal that latches conversion result and enables data bus access |
| 10–13 | D4–D1 | Three-state data outputs - bits 4–1 of conversion result; share bus with µP data lines |
| 14 | D0 (LSB) | Three-state data output - least-significant bit; driven only when CS and RD are asserted |
| 15 | AGND | Analog ground - must be star-connected to minimize noise coupling into sensitive analog front-end |
| 16 | VDD | +5V power supply - requires local 0.1µF ceramic + 47µF bulk decoupling per datasheet layout guidelines |
| 17 | REF | Reference voltage input - accepts 1.23V ±5%; drives internal DAC and defines LSB step size (9.61mV) |
| 18 | BUSY | Open-drain status output - goes low at conversion start, high at completion; used for µP READY or polling |
| 19 | MODE | Mode control - low enables asynchronous continuous conversion; high selects synchronous ROM/slow-memory mode |
| 20 | DGND | Digital ground - isolated from AGND except at single-point system ground to prevent digital noise injection |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous conversion mode | Enabled via MODE pin low - allows continuous sampling independent of µP read timing, simplifying real-time acquisition |
| Eight-sample analog acquisition | Per conversion cycle - improves noise immunity vs. single-sample architectures and eliminates external track/hold requirements |
| Three-state latched outputs | Direct µP bus interface - no transceivers or buffers needed; supports shared data bus with other peripherals |
| ROM interface compatibility | Non-blocking read protocol - µP reads prior result while new conversion runs, maximizing throughput in interrupt-driven systems |
| Low power consumption | 15mW at +5V - enables use in thermally constrained enclosures and extended-life battery-powered instruments |
Applications
| Telecommunications Signal Monitoring | Industrial Servo Loop Feedback |
|---|---|
Use Scenario: Real-time digitization of line-level audio and FSK-modulated signals in base station monitoring units. IC Role / Device Role / Timing Role: ADC capturing 0–2.46V analog inputs at ≥100kSPS with deterministic 10µs latency for jitter-sensitive demodulation. Use Value: 100ns data-access time and BUSY-synchronized read ensure precise alignment with DSP frame boundaries. |
Use Scenario: Closed-loop position sensing in CNC motion controllers using resolver or LVDT feedback. IC Role / Device Role / Timing Role: High-speed analog acquisition of servo error voltage for PID computation in µP-based control firmware. Use Value: Asynchronous mode (MODE = low) enables continuous sampling synchronized to PWM update rate without µP intervention. |
| Portable Data Logger Front-End | Audio System Digitization |
Use Scenario: Battery-operated environmental sensor node logging temperature, pressure, and humidity over 24-hour cycles. IC Role / Device Role / Timing Role: Low-power 8-bit ADC interfacing to µP via ROM mode to minimize active time and extend battery life. Use Value: 15mW dissipation and PLCC-20 compact footprint reduce thermal load and PCB area in space-constrained enclosures. |
Use Scenario: Digitizing line-out signals in professional audio mixers prior to digital effects processing. IC Role / Device Role / Timing Role: Unipolar ADC converting ±2.46V bipolar signals (via external op-amp level shift) into 8-bit offset binary codes. Use Value: ±1LSB TUE and 50kHz full-power bandwidth preserve harmonic integrity up to 20kHz audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX166 | Includes differential analog input and internal 1.23V reference; 10µs conversion; same PLCC-20 package | Designed for applications requiring noise-rejecting differential signaling and reference integration | Select MAX166 when differential input or elimination of external reference circuitry is required |
| AD7820KN | 8-bit, 1.5µs conversion; CMOS process; +5V supply; 20-pin DIP/PLCC; no MODE pin or asynchronous mode | Optimized for ultra-high-speed single-shot acquisition rather than continuous or µP-synchronized sampling | Choose AD7820KN where sub-2µs latency outweighs interface flexibility and power efficiency |
Compared with MAX166, MX7576KP+ lacks differential input but offers MODE-controlled asynchronous operation; versus AD7820KN, it trades raw speed for richer µP interface modes and lower power, making it better suited for embedded systems requiring sustained sampling with minimal µP overhead.
Availability
MX7576KP+ is available at Aetrix Electronics and suitable for high-speed data acquisition, industrial servo control, and portable instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for MX7576KP+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and high-speed data conversion ICs for industrial, communications, and computing markets.
The MX7575/MX7576 product line was engineered for µP-centric embedded systems needing cost-effective, easy-to-integrate 8-bit ADCs with deterministic timing, low power, and flexible interface options - particularly where board space and firmware complexity are constrained.
FAQ
What is the maximum recommended clock frequency for MX7576KP+?
The MX7576KP+ requires a 2MHz external clock for guaranteed 10µs conversion time and full specification compliance. While the datasheet permits clock frequencies up to 2MHz, operation below 2MHz increases conversion time nonlinearly and may degrade accuracy beyond ±1LSB. The internal oscillator option is not recommended for timing-critical applications due to ±50% process variation.
Does MX7576KP+ require an external track/hold circuit?
No, MX7576KP+ does not require an external track/hold circuit. Unlike the MX7575, it performs eight internal analog input samples during each conversion cycle - one before each successive-approximation bit decision - providing inherent sampling stability. This architecture eliminates external components while maintaining ±1LSB accuracy up to 50kHz full-power input bandwidth.
How does the MODE pin affect MX7576KP+ operation?
The MODE pin on MX7576KP+ selects between synchronous and asynchronous conversion modes. When MODE = high, the device operates in ROM or slow-memory interface mode, initiating conversions on CS/RD edges. When MODE = low, MX7576KP+ enters continuous asynchronous conversion mode - BUSY toggles at fixed 100kSPS rate, and data is updated on each BUSY rising edge, independent of µP read timing.
What is the input impedance seen at the AIN pin of MX7576KP+?
The MX7576KP+ presents a DC input impedance of 10MΩ at the AIN pin, with 10pF input capacitance. For optimal settling and full-scale accuracy, the analog source impedance must remain ≤2kΩ to ensure the internal sampling capacitor charges within the 10µs conversion window. Higher source impedances cause gain error and reduced SNR, especially above 10kHz input frequencies.
Can MX7576KP+ operate with a 3.3V supply?
No, MX7576KP+ is specified only for +5V supply operation (4.75V to 5.25V). Its digital interface levels (VIH = 2.4V, VIL = 0.8V), internal clock oscillator, and reference input circuitry are designed around 5V CMOS/TTL logic thresholds. Using 3.3V violates absolute maximum ratings and will result in undefined behavior, failed conversions, or permanent damage.
MX7576KP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 100k
- 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
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-PLCC (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MX7576KP+ FAQ
1.How can I place an order for MX7576KP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MX7576KP+ 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 MX7576KP+ reliable?
The price and inventory of MX7576KP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX7576KP+ is usually 5 days.
3.What payment methods are accepted for MX7576KP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX7576KP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX7576KP+?
MX7576KP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX7576KP+ 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 MX7576KP+?
For technical support, including MX7576KP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX7576KP+ requirements.
6.How does Aetrix verify that MX7576KP+ is sourced from the original manufacturer or authorized distributors?
All MX7576KP+ 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 MX7576KP+ meets industry standards.
7.What is the process for return or replacement of MX7576KP+?
All MX7576KP+ units undergo pre-shipment inspection (PSI). If there is an issue with MX7576KP+, 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 MX7576KP+ part is unused and in its original packaging.
Return procedure for MX7576KP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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