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Analog Devices Inc./Maxim Integrated MX7576KP+T
- Part No.:
- MX7576KP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-LCC (J-Lead)
- Datasheet:
-
MX7576KP+T.pdf
- Description:
- IC ADC 8BIT SAR 20PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,349
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Product details
Overview
MX7576KP+T 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 asynchronous conversion mode enabled via MODE pin. It targets high-speed data acquisition systems requiring deterministic sampling control and direct µP bus interfacing without wait-state extension.
For engineers reviewing the MX7576KP+T datasheet, MX7576KP+T pinout, MX7576KP+T application, or MX7576KP+T equivalent, this page delivers verified electrical parameters, PLCC-20 package mapping, timing-critical interface behavior (ROM/slow-memory/asynchronous), real-world SNR vs. frequency performance, and validated alternative options for 8-bit, sub-10µs ADC replacement in embedded signal chains.
Technical Context
The MX7576KP+T uses successive-approximation architecture with eight internal analog input samplings per conversion cycle-distinct from the MX7575's single-track/hold-and relies on external 2MHz clock or internal RC oscillator. Its asynchronous mode (MODE = low) decouples data read access from conversion timing, enabling ROM-like µP interface behavior.
It features three-state latched 8-bit parallel outputs (D0–D7), BUSY signaling for conversion status, CS/RD-controlled start-and-read protocol, and separate AGND/DGND pins to maintain analog integrity. Reference input requires stable 1.23V ±5% with low AC/DC impedance per Maxim's recommended ICL8069-based circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes over full-scale range |
| Conversion Time | 10µs with external 2MHz clock - enables 100kSPS sustained throughput |
| Input Range | 0V to 2VREF (0–2.46V typical) - unipolar operation with 1.23V reference |
| Total Unadjusted Error | ±2 LSB max - defines worst-case deviation from ideal transfer curve |
| Signal-to-Noise Ratio | 45dB at 10kHz - measured with 2.46Vp-p sine input, indicating usable dynamic range |
| Power Dissipation | 15mW at +5V - supports low-power portable and battery-backed DAQ designs |
| Supply Voltage | +5V (4.75V–5.25V) - compatible with standard TTL/CMOS logic rails |
Pinout & Package
MX7576KP+T is housed in a 20-pin plastic leaded chip carrier (PLCC) package with gull-wing leads, rated for 0°C to +70°C operation. Pin 1 is marked by a notch or dot; pin numbering follows standard PLCC counterclockwise convention starting from the notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | N.C. | No internal connection - must remain unconnected |
| 2 | MODE | Mode select: low = asynchronous continuous conversion; high = synchronous/ROM interface |
| 3 | D0 (LSB) | Three-state digital output - bit 0 of conversion result, active only when CS & RD low |
| 4–7 | D1–D4 | Three-state digital outputs - bits 1–4 of 8-bit result, share same enable timing as D0 |
| 8, 9 | D5, D6 | Three-state digital outputs - middle bits of conversion word, latched at BUSY rising edge |
| 10 | D7 (MSB) | Three-state digital output - most significant bit, updated synchronously with BUSY high |
| 12–15 | AGND, REF, AIN, VDD | Analog ground, 1.23V reference input, analog input (0–2.46V), +5V supply - require local decoupling |
| 16–18 | DGND, CLK, BUSY | Digital ground, clock input (2MHz external or RC oscillator), open-drain busy indicator |
| 19, 20 | CS, RD | Chip select and read inputs - jointly initiate conversion and enable data latch access |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous conversion mode | Enables continuous sampling independent of µP read timing when MODE = low |
| Eight-point analog sampling | Improves noise immunity vs. single-point sampling (MX7575), reducing aperture jitter impact |
| 100ns data-access time | Allows direct connection to fast µPs (e.g., TMS32010 @ 18MHz) without glue logic |
| Separate AGND/DGND pins | Minimizes digital switching noise coupling into analog path, preserving SNR |
| Internal clock option | RC oscillator (RCLK=100kΩ, CCLK=100pF) eliminates external crystal need for non-critical timing |
Applications
| Telecommunications Channel Monitoring | Industrial Servo Loop Feedback |
|---|---|
Use Scenario: Real-time monitoring of line voltage, current, and signal integrity in DSLAM front-end circuits. IC Role / Device Role / Timing Role: ADC digitizing conditioned analog sensor outputs at 100kSPS for FPGA-based error detection and reporting. Use Value: 10µs conversion time ensures minimal latency between fault occurrence and system response, critical for loop stability. |
Use Scenario: Closed-loop position/velocity feedback in CNC motion controllers using resolver or LVDT sensors. IC Role / Device Role / Timing Role: High-reliability ADC capturing analog feedback signals synchronized to PWM update cycles. Use Value: Asynchronous mode allows µP to poll conversion results at its own pace while servo hardware runs continuously. |
| Audio Signal Digitization | Portable Data Logger Front-End |
Use Scenario: Digitizing microphone preamp outputs in voice-recognition edge devices operating at ≤20kHz bandwidth. IC Role / Device Role / Timing Role: 8-bit ADC providing sufficient dynamic range for speech-band SNR with minimal power overhead. Use Value: 45dB SNR at 10kHz meets ITU-T P.56 voice quality thresholds without oversampling or DSP post-processing. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and light over extended periods. IC Role / Device Role / Timing Role: Low-power ADC acquiring sensor outputs under µP control during scheduled wake-up intervals. Use Value: 15mW dissipation extends battery life; PLCC-20 package supports compact PCB layout with integrated decoupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, µP-compatible ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX166 | Differential analog input, internal 1.23V reference, no MODE pin - requires different biasing and lacks asynchronous mode | Preferred for differential sensor interfaces (e.g., strain gauges); unsuitable where single-ended AIN and MODE flexibility are required | Select MAX166 only if differential input and internal reference simplify BOM; MX7576KP+T retains design flexibility for unipolar, externally referenced systems |
| AD7820KN | 8-bit, 2µs conversion, CMOS process, +5V supply - faster but higher power (30mW), no built-in asynchronous mode or MODE pin | Better for ultra-low-latency trigger capture; less suitable for continuous polling due to lack of dedicated async control | Choose AD7820KN when sub-5µs latency is mandatory and power budget allows; MX7576KP+T offers superior interface versatility for general-purpose µP integration |
Compared with MAX166 and AD7820KN, MX7576KP+T uniquely balances 10µs speed, asynchronous operation, external reference control, and PLCC-20 footprint-making it optimal for cost-sensitive, µP-centric DAQ systems needing deterministic yet flexible sampling behavior without redesigning clock or reference subsystems.
Availability
MX7576KP+T is available at Aetrix Electronics and suitable for industrial servo loops, telecommunications channel monitoring, and portable data loggers requiring stable component supply across extended production lifecycles.
Supply support for MX7576KP+T 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 high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The MX7575/MX7576 product line was designed for µP-based data acquisition systems demanding fast, low-power, parallel-interface ADCs with flexible timing modes and robust noise immunity in mixed-signal environments.
FAQ
What is the maximum recommended clock frequency for MX7576KP+T?
The MX7576KP+T specifies 2MHz external clock frequency for guaranteed 10µs conversion time and full accuracy compliance. Using clocks above 2MHz may reduce conversion time but risks violating timing margins and increasing total unadjusted error beyond ±2 LSB. The internal oscillator (RCLK=100kΩ, CCLK=100pF) yields nominal ~2MHz but varies ±50% across temperature and process, so external clocking is preferred for timing-critical applications involving MX7576KP+T.
Does MX7576KP+T support differential analog input?
No, MX7576KP+T supports only single-ended analog input (AIN referenced to AGND) with 0V to 2VREF range. It does not include differential input circuitry or programmable gain. For differential input capability, Maxim recommends the MAX166 - a functionally related but distinct part with differential AIN pins and internal reference, which is not pin-compatible or drop-in replaceable with MX7576KP+T.
How does the MODE pin affect MX7576KP+T operation?
The MODE pin on MX7576KP+T selects between two fundamental interface behaviors: when MODE = low, MX7576KP+T enters asynchronous conversion mode - continuously converting and updating output latches on BUSY rising edge, independent of CS/RD state; when MODE = high, MX7576KP+T operates in synchronous mode (ROM or slow-memory), where CS and RD jointly initiate each conversion and control data access timing. This dual-mode flexibility is unique to MX7576KP+T within the MX7575/76 family.
Can MX7576KP+T be used with a 3.3V microprocessor interface?
MX7576KP+T is specified for +5V supply and TTL/CMOS-compatible logic levels: VINL = 0.8V max, VINH = 2.4V min, VOH = 4.0V min, VOL = 0.4V max. Direct connection to 3.3V µPs risks violating input high-voltage minimum and may cause unreliable CS/RD recognition. Level-shifting (e.g., TXB0108) or 5V-tolerant µP I/O is required for safe interoperability with MX7576KP+T.
What is the purpose of the TP pin on MX7576KP+T?
The TP (Test Point) pin on MX7576KP+T is not present - it is exclusive to the MX7575 variant. MX7576KP+T replaces TP with the MODE pin (Pin 2). Confusion arises because MX7575 and MX7576 share functional diagrams and pinout tables in documentation, but MX7576KP+T has no TP functionality. Pin 2 on MX7576KP+T must be driven high or low to configure interface mode, not tied to VDD like MX7575's TP pin.
MX7576KP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MX7576KP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MX7576KP+T 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+T reliable?
The price and inventory of MX7576KP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MX7576KP+T is usually 5 days.
3.What payment methods are accepted for MX7576KP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MX7576KP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MX7576KP+T?
MX7576KP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MX7576KP+T 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+T?
For technical support, including MX7576KP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MX7576KP+T requirements.
6.How does Aetrix verify that MX7576KP+T is sourced from the original manufacturer or authorized distributors?
All MX7576KP+T 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+T meets industry standards.
7.What is the process for return or replacement of MX7576KP+T?
All MX7576KP+T units undergo pre-shipment inspection (PSI). If there is an issue with MX7576KP+T, 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+T part is unused and in its original packaging.
Return procedure for MX7576KP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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