MX7575KP+ - 8-Bit 5µs ADC with Track/Hold, PLCC-20 | Maxim
Артикул: MX7575KP+ ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.2 | $112,00 |
| 100 | $9.85 | $985,00 |
| 500 | $8.6 | $4.300,00 |
| 1.000 | $7.4 | $7.400,00 |
MX7575KP+ Обзор
An 8-bit successive-approximation ADC is a type of data converter that uses a binary-search algorithm against an internal precision DAC to resolve an analog input into a digital code, balancing speed, resolution, and cost. Successive-approximation ADCs sit in the broader hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. They are favored for general-purpose digitisation where 8-16 bit resolution at medium sampling rates is sufficient, dominating applications like process control, instrumentation, and embedded sensor reading.
Key features include 5µs typical conversion time (10µs maximum), on-chip track/hold for full-scale signals up to 50 kHz, a unipolar 0-2.46V analog input range, +5V single-supply operation, and a parallel µP-compatible interface that maps directly onto bus architectures. Internal reference and clock options simplify external bill-of-materials, and the CMOS construction keeps power consumption moderate for a 5V ADC.
The MX7575KP+ operates from a single +5V supply and is specified over the commercial 0°C to +70°C temperature range. The built-in track/hold removes the need for an external sample-and-hold amplifier in most applications, reducing system cost and board area. Conversion initiation can be controlled via the WR/RD inputs, allowing the host CPU to read conversion results without an external latch.
Typical applications include process control and industrial data acquisition, digital-panel meters, portable instrumentation, embedded microcontrollers requiring an analog channel, test equipment front-ends, and simple closed-loop control systems. The 5µs conversion time suits loop bandwidths in the kilohertz range, comfortably digitising 4-20 mA-derived signals after scaling.
The MX7575KP+ is the PLCC-20, 0°C-to-+70°C commercial-grade variant of the MX7575 family; it is differentiated from the MX7575JP+ (CERDIP package), the MX7575KP-T (tape-and-reel packaging code), and the MX7575JN by package and operating grade. Designers should ensure a clean analog ground plane and a 0.1µF supply bypass capacitor close to the supply pin to avoid conversions errors from digital switching noise.
This page synthesizes distributor pricing, same-family drop-in variants, and PLCC-20 compatible alternatives not aggregated elsewhere, giving sourcing and engineering teams a single reference for evaluating the MX7575KP+ for new designs or legacy second-source support.
Аналоги без доработки для MX7575KP+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MX7575KP-T
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MX7575JP+
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
AD7575JPZ-REEL
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MX7575KN+
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
MX7575KP+ Максимальные параметры и электрические характеристики
| Разрешение | 8 bits |
| Conversion Time | 5 µs (typical) / 10 µs (maximum) |
| Conversion Architecture | Successive Approximation |
| Analog Input Range | 0 V to 2.46 V unipolar |
| Input Bandwidth (Track/Hold) | 50 kHz full-scale (386 mV/µs slew rate) |
| On-Chip Track/Hold | Yes |
| Напряжение питания | +5 V single supply |
| Digital Interface | Parallel, microprocessor-compatible (8-bit bus) |
| Number of Terminals | 20 |
| Terminal Form | J-Bend |
| Package Code | QCCJ (PLCC-20) |
| Package Shape | Square |
| Диапазон рабочих температур | 0 °C to +70 °C (Commercial) |
| Temperature Grade | Commercial |
Конфигурация выводов MX7575KP+
| Контакт 1 | DB7 (MSB) — Data bit 7 (MSB) - parallel output |
| Контакт 2 | DB6 — Data bit 6 - parallel output |
| Контакт 3 | DB5 — Data bit 5 - parallel output |
| Контакт 4 | DB4 — Data bit 4 - parallel output |
| Контакт 5 | DB3 — Data bit 3 - parallel output |
| Контакт 6 | DB2 — Data bit 2 - parallel output |
| Контакт 7 | DB1 — Data bit 1 - parallel output |
| Контакт 8 | DB0 (LSB) — Data bit 0 (LSB) - parallel output |
| Контакт 9 | AGND — Analog ground |
| Контакт 10 | AIN — Analog input (0V to 2.46V unipolar) |
| Контакт 11 | VREF — Reference voltage input/output (per datasheet) |
| Контакт 12 | VDD — +5V supply |
| Контакт 13 | DGND — Digital ground |
| Контакт 14 | WR — Write/start-conversion control input |
| Контакт 15 | RD — Read/output-enable control input |
| Контакт 16 | CS — Chip select (active low) |
| Контакт 17 | BUSY/INT — Conversion-in-progress / interrupt output |
| Контакт 18 | CLK — External clock input (internal option per datasheet) |
| Контакт 19 | MODE — Mode selection input (per datasheet) |
| Контакт 20 | NC — Not connected (per datasheet) |
Типичное применение
MX7575KP+ подходит для 6 применениеs: Process Control Data Acquisition, Digital Panel Meters, Microcontroller Analog Input Channels, Portable Test Equipment, Closed-Loop Motor Control, Audio/Signal Sampling Front-End.
Process Control Data Acquisition
The MX7575KP+ is well-suited for process-control and industrial data-acquisition front-ends where an 8-bit resolution at 5 µs conversion time is sufficient. Its on-chip track/hold accepts full-scale signals to 50 kHz (386 mV/µs), eliminating the need for an external SHA in PLC analog-input modules. Placed between 4-20 mA-derived voltage signals (after resistor scaling) and an 8-bit microcontroller bus, the +5V supply and parallel interface drop directly into PLC backplanes. Unlike higher-resolution SAR ADCs, the MX7575KP+ delivers predictable latency over the commercial 0-70°C range with a simple PCB footprint.
Рекомендуется
Digital Panel Meters
Digital panel meters (DPMs) and bench-top instrumentation benefit from the MX7575KP+'s 8-bit resolution, fast 5 µs conversion, and +5V single-supply operation. The on-chip track/hold and parallel interface allow the meter to update its display from a single RD pulse without external latches. Driving the 0-2.46V analog input directly from a resistive divider of the measured signal keeps the BOM small. With ~9.61 mV per LSB, the converter offers ~0.4% full-scale accuracy - sufficient for portable handheld meters and simple industrial displays.
Рекомендуется
Microcontroller Analog Input Channels
Embedded 8-bit microcontrollers lacking an integrated ADC benefit from the MX7575KP+ as a parallel peripheral - it interfaces directly to an external memory-mapped bus or 8255-style I/O expander. The 5 µs conversion gives an effective loop time of ~200 kSPS aggregate across many channels, and the 0-2.46V input spans typical sensor outputs such as thermistors and strain gauges after signal conditioning. The PLCC-20 footprint sockets cleanly into prototype boards, simplifying firmware bring-up. Compared with slow sigma-delta alternatives, the MX7575KP+ trades power for deterministic sample latency.
Рекомендуется
Portable Test Equipment
Portable battery-powered test equipment uses the MX7575KP+ for low-power, fast digitisation of sensor signals where 8-bit resolution is acceptable. The +5V single-supply operation matches USB- and battery-derived rails after boost-conversion, and the ~9.61 mV LSB granularity suits handheld multimeter-type displays. The integrated track/hold simplifies analog front-end design, allowing a single ended resistive divider to be measured without an extra SHA op-amp. Combined with a low-power microcontroller, this ADC completes a 3- to 4-digit handheld DMM on a few hundred mW.
Рекомендуется
Closed-Loop Motor Control
Low-cost 8-bit closed-loop DC motor controllers use the MX7575KP+ to digitise current-sense amplifier outputs at up to 100 kSPS aggregate, supporting PWM frequencies up to ~10 kHz with multiple readings per electrical cycle. The ADC's fast 5 µs conversion and parallel interface allow firmware to compute PWM duty-cycle updates within a single switching period without DMA overhead. The on-chip track/hold preserves slew rate of 386 mV/µs, sufficient for current-mode signals from a 50 A/50 mV shunt. Designers can use the converter in bang-bang or PI-loop schemes where 1% set-point granularity is acceptable.
Рекомендуется
Audio/Signal Sampling Front-End
Low-fidelity 8-bit audio and signal-sampling front-ends - such as amateur radio DSP, ultrasonic ranging, or simple vibration monitors - leverage the MX7575KP+'s 50 kHz input bandwidth and 5 µs conversion time to capture waveforms well above the audible 20 kHz limit. A simple op-amp input buffer delivers 0-2.46V to the ADC; an 8-bit sample stream is then processed by an 8051-class microcontroller in real time. While modern DSP designs use sigma-delta codecs, the MX7575KP+ remains a cost-effective, low-latency digitiser for instrumentation and hobby-grade audio capture.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MX7575KP+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MX7575KP-T | MX7575JP+ | AD7575JPZ-REEL | MX7575KN+ |
|---|---|---|---|---|---|
| Package | PLCC-20 (QCCJ, J-Bend) | PLCC-20 (QCCJ) - same | CERDIP-20 (windowed) - different footprint | PLCC-20 (QCCJ) - same | PLCC-20 (QCCJ) - same |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Analog Devices | Maxim Integrated |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits |
| Conversion Time (max) | 10 µs | 10 µs | 10 µs | 10 µs | 10 µs |
| Analog Input Range | 0 V to 2.46 V unipolar | 0 V to 2.46 V unipolar | 0 V to 2.46 V unipolar | 0 V to 2.46 V unipolar | 0 V to 2.46 V unipolar |
| On-Chip Track/Hold | Yes (50 kHz / 386 mV/µs) | Yes | Yes | Yes | Yes |
| Supply Voltage | +5 V single | +5 V single | +5 V single | +5 V single | +5 V single |
| Operating Temperature | 0 °C to +70 °C (Commercial) | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C |
Ключевые отличия
- On-chip track/hold with 50 kHz full-scale bandwidth (против External SHA alternatives)
- Datasheet-verified drop-in compatible with ADI dual-source (против Single-source alternatives)
- PLCC-20 socket-compatible for prototype and field swap (против Solder-only surface-mount alternatives)
Заметки по проектированию
The MX7575KP+ operates from a single +5 V supply and draws modest supply current due to its CMOS architecture. Place a 0.1 µF low-ESR ceramic decoupling capacitor as close as possible to the VDD pin (PLCC-20 pin 12), with a 10 µF tantalum bulk capacitor at the supply rail entry point. A ferrite bead or small inductor on VDD isolates the ADC from digital switching noise on the same rail. Avoid powering the converter directly from a switching regulator output without a post-filter LDO when the analog input spans below ~10 mV LSB - supply ripple can directly couple into conversion results.
Use a separate analog ground (AGND, pin 9) and digital ground (DGND, pin 13) plane per the Maxim datasheet, tied together at a single point beneath the converter (star-grounding). Route analog input traces as short, guarded differential pairs away from digital outputs (DB0-DB7) and clock lines to minimise digital crosstalk. Place the input buffer op-amp within 25 mm of the AIN pin to reduce parasitic capacitance and ringing. The PLCC-20 socket or solder land pattern must retain at least 0.5 mm clearance from the IC body to allow post-solder inspection.
Do not exceed the 0V-to-2.46V analog input range or apply negative voltage on AIN - the CMOS input structure has no input-protection diodes to the rails. Driving the BUSY/INT output into another active driver can damage the part; this pin is open-drain (or push-pull, per revision) - consult the datasheet revision to plan for the required pull-up. Always assert WR with a clean pulse and respect the 5 µs minimum conversion time; back-to-back reads without the busy flag can yield stale data. For new designs, replace the obsolete MX7575KP+ with a modern 12-bit SAR ADC to preserve the PCB layout during redesigns.
The on-chip track/hold can acquire full-scale signals up to 50 kHz (386 mV/µs slew rate), but the analog input source impedance should stay below ~1 kΩ to avoid ADC gain error from the sample capacitor's finite acquisition time. Use a wideband op-amp buffer (GBW > 10 MHz, slew rate > 5 V/µs) for higher-impedance sensors. Hold-mode droop is negligible at room temperature, but expect degraded THD below 5 kHz input bandwidth in transducer measurements unless the input amplifier bandwidth is rolled off appropriately.
Информация о соответствии
RoHS / lead-free / halogen status was not present in the verified web data; reviewers should consult the manufacturer datasheet cover page or the product's material declaration on the Analog Devices website. AEC-Q100 is not applicable (commercial 0-70C grade).
