MAX11615EEE+TC78 - 12-Bit 8-Ch I²C Low-Power ADC | Maxim Integrated
Артикул: MAX11615EEE+TC78 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $5.18 | $5,18 |
| 10 | $4.72 | $47,20 |
| 100 | $4.1 | $410,00 |
| 500 | $3.62 | $1.810,00 |
| 1.000 | $3.18 | $3.180,00 |
MAX11615EEE+TC78 Обзор
A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of low-power, medium-resolution data converter that uses a binary search algorithm against an internal DAC to digitize an analog input in N conversion cycles for N-bit resolution. SAR ADCs sit within the data-converter IC family, which belongs to the broader mixed-signal semiconductor category. They are favored in multiplexed channel applications because they offer deterministic latency, low quiescent power, and a small package footprint versus integrating or pipeline ADCs.
The MAX11615EEE+TC78 operates from a single 2.7V to 3.6V supply, draws only 670 µA at the maximum 94.4 ksps sampling rate, and supports both 400 kHz Fast-Mode and 1.7 MHz High-Speed-Mode I²C operation. On-chip features include an internal 2.048V reference, an internal oscillator, software-configurable unipolar/bipolar input range, and four GPIO-capable digital I/O pins that can be used for analog input channel expansion. The QSOP-16 footprint makes it well-suited for space-constrained portable instruments.
Typical applications include portable and battery-powered data loggers, handheld multimeters, patient monitoring front-ends, industrial sensor conditioning loops, 4–20 mA loop powered transmitters, programmable logic controllers (PLCs), and consumer audio front-panel control. The wide analog input range and internal reference simplify the analog front-end while keeping external component count low.
When designing with this ADC, place 0.1 µF decoupling capacitors as close as possible to the AVDD and DVDD pins, and use a low-impedance analog ground plane to minimize channel-to-channel crosstalk. The I²C address is hardware-selectable via the AD0 pin, allowing two devices to coexist on the same bus without external glue logic.
This page synthesizes distributor pricing, same-family and cross-brand drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet alone.
Аналоги без доработки для MAX11615EEE+TC78 — 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:
MAX11615EEE+T
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX11615EEE+
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX11615EWE+T
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MAX11617EEE+T
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
MAX11613EEE+T
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
MAX11616EEE+T
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
MAX11615EEE+TC78 Максимальные параметры и электрические характеристики
| Разрешение | 12 bit |
| Number of Input Channels | 8 (single-ended) / 4 (pseudo-differential) |
| Converter Type | SAR (Successive Approximation Register) |
| Sampling Rate (max) | 94.4 ksps |
| Напряжение питания | 2.7 V to 3.6 V |
| Supply Current (full speed) | 670 µA |
| Интерфейс | I²C-compatible 2-wire (Fast-Mode 400 kHz, High-Speed-Mode 1.7 MHz) |
| Internal Reference Voltage | 2.048 V |
| Input Type | Single-ended / pseudo-differential, software-configurable |
| Analog Input Range (unipolar) | 0 V to VREF |
| Рабочая температура | -40 °C to +85 °C |
| Корпус | 16-pin QSOP |
| Тип монтажа | Surface Mount |
| Reel Code | TC78 (178 mm / 7-inch Tape & Reel) |
| Статус RoHS | Compliant |
Конфигурация выводов MAX11615EEE+TC78
| Контакт 1 | AIN0 — Analog input channel 0 |
| Контакт 2 | AIN1 — Analog input channel 1 |
| Контакт 3 | AIN2 — Analog input channel 2 |
| Контакт 4 | AIN3 — Analog input channel 3 |
| Контакт 5 | AIN4 — Analog input channel 4 |
| Контакт 6 | AIN5 — Analog input channel 5 |
| Контакт 7 | AIN6 — Analog input channel 6 |
| Контакт 8 | AIN7 — Analog input channel 7 |
| Контакт 9 | GND — Ground |
| Контакт 10 | REF — Voltage reference input/output (internal 2.048 V) |
| Контакт 11 | SDA — I²C serial data |
| Контакт 12 | SCL — I²C serial clock |
| Контакт 13 | AD0 — I²C address select (hardware LSB) |
| Контакт 14 | DVDD — Digital supply voltage |
| Контакт 15 | AVDD — Analog supply voltage |
| Контакт 16 | GND — Ground |
Типичное применение
MAX11615EEE+TC78 подходит для 6 применениеs: Portable Battery-Powered Data Logger, Handheld Digital Multimeter Front-End, Industrial 4-20 mA Loop Transmitter, Patient Monitoring Sensor Front-End, Programmable Logic Controller (PLC) Analog Input Module, Consumer Audio Front-Panel Control.
Portable Battery-Powered Data Logger
The MAX11615EEE+TC78 fits portable battery-powered data loggers because its 670 µA supply current at 94.4 ksps and sub-1 µA power-down mode directly extend runtime from a 3.3 V lithium or two-AA cell stack. The 8 single-ended channels can be hard-wired to a multi-sensor input MUX (temperature, humidity, pressure, voltage), and the internal 2.048 V reference removes the cost and leakage of an external reference IC. The 16-pin QSOP keeps the analog front-end under 30 mm², leaving room for the MCU, microSD, and battery. Designers can also leverage the integrated track/hold to sample rapidly-changing signals such as strain-gauge bridge outputs without an external amplifier.
Рекомендуется
Handheld Digital Multimeter Front-End
In a handheld digital multimeter (DMM) the MAX11615EEE+TC78 digitizes the conditioned voltage, current, and resistance measurement rails through its 8 single-ended / 4 pseudo-differential inputs. The internal 2.048 V reference gives a 0.5 mV-per-LSB step at 12 bits, which is sufficient for a 3-1/2-digit DMM display, and the I²C interface fits a 4-wire keypad-and-display MCU bus without adding pins. The 94.4 ksps throughput supports fast auto-range acquisition, and the wide -40 °C to +85 °C operating range covers outdoor and industrial use. QSOP-16 footprint also eases the 4-layer PCB layout typical of modern DMMs.
Рекомендуется
Industrial 4-20 mA Loop Transmitter
A 4-20 mA loop transmitter uses the MAX11615EEE+TC78 to digitize the loop-powered sensor signal (RTD, thermocouple, or pressure transducer) and feed the result back to the loop controller. The pseudo-differential input mode rejects common-mode noise picked up on long field cabling, and the 2.7 V–3.6 V supply range is ideal for operation from a regulated 3.3 V rail that is itself powered through the loop. The 670 µA current budget leaves enough headroom for a 4-20 mA XTR device and an RS-485 isolation barrier, and the 16-pin QSOP package slots into the small form factor of a field-mount transmitter head.
Рекомендуется
Patient Monitoring Sensor Front-End
For patient-monitoring sensor front-ends such as pulse oximetry, ECG leads, and temperature patches, the MAX11615EEE+TC78 offers 8 channels at 12 bits in a footprint small enough to integrate into a wearable form factor. The pseudo-differential input scheme rejects mains-frequency pickup common in clinical environments, and the integrated reference and track/hold minimize external component count, which is critical for low-leakage, low-noise biopotential measurements. The I²C interface shares the bus with a low-power MCU, and the 2.7 V–3.6 V supply is directly compatible with a single Li-ion cell, simplifying battery management.
Рекомендуется
Programmable Logic Controller (PLC) Analog Input Module
In a PLC analog-input module the MAX11615EEE+TC78 handles up to 8 single-ended 0–10 V or 4–20 mA inputs after external signal conditioning, with the 94.4 ksps throughput supporting scan rates above 10 kHz per channel. The I²C interface runs in High-Speed-Mode (1.7 MHz) to keep cycle time low across multiple modules on the same bus, and the 16-pin QSOP allows the analog section to fit on the same board as the digital isolator. The wide operating temperature range of -40 °C to +85 °C meets the industrial control cabinet environment, and the 2.048 V internal reference provides a stable conversion scale even when the 24 V field supply is noisy.
Рекомендуется
Consumer Audio Front-Panel Control
For consumer audio amplifiers and receivers, the MAX11615EEE+TC78 reads volume rotary encoders, push-button matrices, and source-select voltages through its 8 analog inputs, then forwards the state to the main DSP over I²C. The 12-bit resolution provides smoother volume curves than 8-bit predecessors, and the QSOP-16 footprint leaves the front-panel PCB uncluttered. The 2.7 V–3.6 V supply matches the system standby rail, allowing the device to wake the main MCU via its I²C interrupt pattern, and the 670 µA active current is negligible compared to the rest of the audio chain.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX11615EEE+TC78 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX11615EEE+T | MAX11615EEE+ | MAX11615EWE+T | MAX11617EEE+T | MAX11613EEE+T | MAX11616EEE+T |
|---|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-pin QSOP | 16-pin QSOP | 16-pin QSOP | 16-pin WSOIC | 16-pin QSOP | 16-pin QSOP | 16-pin QSOP |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Number of Channels | 8 SE / 4 PD | 8 SE / 4 PD | 8 SE / 4 PD | 8 SE / 4 PD | 12 SE / 6 PD | 4 SE / 2 PD | 8 SE / 4 PD |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 4.5 V to 5.5 V |
| Sampling Rate (max) | 94.4 ksps | 94.4 ksps | 94.4 ksps | 94.4 ksps | 94.4 ksps | 94.4 ksps | 94.4 ksps |
| Interface | I²C (400 kHz / 1.7 MHz) | I²C | I²C | I²C | I²C | I²C | I²C |
| Internal Reference | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 4.096 V |
Ключевые отличия
- Same silicon die and identical electricals in standard reel format (против MAX11615EEE+T)
- 12 more analog input channels in the same QSOP-16 footprint (против MAX11617EEE+T)
- Same 8-channel 12-bit SAR ADC die in a wider SOIC body (против MAX11615EWE+T)
Заметки по проектированию
Place a 0.1 µF X7R ceramic decoupling capacitor within 3 mm of the AVDD pin and an identical capacitor at the DVDD pin, plus a single 10 µF bulk capacitor shared between the two rails. The MAX11615EEE+TC78 draws 670 µA at 94.4 ksps, so the bulk capacitor must recharge between conversions without sagging the supply. Tie AVDD and DVDD together at the IC side and separate them only with a ferrite bead if the digital rail is particularly noisy.
Route the analog input traces as short as possible and guard them with a ground pour on both sides of the PCB. Keep the analog and digital sections physically separated, with a single-point ground connection at the ADC GND pin to avoid ground-loop noise. The QSOP-16 thermal pad is not present on this package, but the exposed lead frame still benefits from a copper pour on the bottom layer for thermal spreading.
Estimated: when running the I²C bus above 400 kHz (High-Speed-Mode at 1.7 MHz), use 4.7 kΩ pull-up resistors on SDA and SCL and place a 22 Ω series resistor at the master SDA/SCL pins to dampen ringing. The MAX11615EEE+TC78 inputs present a high-impedance sampling capacitor of approximately 30 pF, so the analog source impedance should be kept below 5 kΩ to avoid gain errors and settling-time issues. Add a 100 Ω series resistor at each AIN pin if the source impedance cannot be reduced further.
Информация о соответствии
RoHS compliant per Maxim Integrated product page. The TC78 reel code does not change the material composition. Not AEC-Q100 qualified — for automotive designs, consider the MAX11615EEE+T with extended screening or a different ADC family.
