ADS7067 - 16-Bit 8-Channel 800kSPS SAR ADC | Texas Instruments
MPN: ADS7067 ✓ نشطADS7067 نظرة عامة
An ADC (analog-to-digital converter) is a mixed-signal device that converts continuous analog voltages into discrete digital codes for digital processing. SAR ADCs are a key subcategory of data converters, using a binary-search algorithm with a capacitive DAC to achieve high resolution and speed at low power. The ADS7067 sits within the precision data-acquisition hierarchy: SAR ADC -> data converter -> mixed-signal IC -> semiconductor.
Key features include 16-bit resolution, 8 multiplexed input channels, and up to 800 kSPS throughput. The integrated capless reference and reference buffer eliminate external reference decoupling, dramatically reducing solution size and BOM count - a decisive advantage in wafer-level-chip-scale designs. Four GPIO pins add configurable digital I/O and alarm functionality without an external MCU expander.
Architecturally, the ADS7067 uses a capacitive DAC with a precision comparator for excellent linearity and low noise. The SPI-compatible serial interface supports daisy-chaining and multi-device configurations, easing integration with microcontrollers and FPGAs in distributed sensing systems.
Typical applications include motor-control current-loop sensing, power monitoring, industrial process control, and battery-powered IoT sensors. The 1.62 x 1.62 mm footprint fits directly under or beside shunt-based sensing circuits, while 800 kSPS throughput captures fast transients in control loops.
Design tip: decouple AVDD and DVDD with 0.1 uF plus 1 uF ceramics placed close to the balls; although the reference is capless, follow datasheet layout guidance for the REF node to preserve 16-bit noise performance.
بدائل مباشرة لـ ADS7067 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع ADS7067 (نفس عامل الشكل والبصمة) — يختلف في Architecture, Interface, Mounting Type, Number of Channels, Package.
ADS7066IYBHR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS7065IYBHR
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
ADS7067IYBHT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS7067 الحدود القصوى والخصائص الكهربائية
| الدقة | 16 bit |
| Number of Channels | 8 (multiplexed) |
| معدل أخذ العينات | 800 kSPS |
| Architecture | SAR (successive approximation register) |
| Input Type | Single-ended |
| Reference | Integrated capless reference with buffer |
| الواجهة | SPI-compatible serial |
| GPIO | 4 configurable GPIOs with alarm function |
| العلبة | 16-DSBGA (1.62 mm x 1.62 mm) |
| نوع التركيب | Surface Mount (wafer-level chip scale) |
| حالة RoHS | Compliant |
دليل تكوين أطراف ADS7067 16-dsbga (1.62 mm x 1.62 mm)
تكوين الأطراف لـ ADS7067 (حزمة 16-dsbga (1.62 mm x 1.62 mm)). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ ADS7067.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
ADS7067 مناسب لـ 6 التطبيقs: Motor Control Current Sensing, Power Monitoring, Battery-Powered IoT Sensors, Industrial Process Control, Test and Measurement, Automotive Body and Power Supervision.
Motor Control Current Sensing
The ADS7067's 800 kSPS throughput and 8 multiplexed channels let a single ADC sample all three phase currents plus DC-bus voltage in a FOC motor-control loop without a bottleneck. The 1.62 mm x 1.62 mm 16-DSBGA package fits directly beside shunt or amplifier outputs. Its SAR architecture provides deterministic conversion latency, simplifying control-loop timing; GPIOs can drive alarm flags for overcurrent events.
موصى به
Power Monitoring
For DC power monitoring, the ADS7067 digitizes bus voltage, current-sense amplifier output, and auxiliary rails on its 8 channels. The integrated capless reference removes an external reference IC, improving accuracy stability and reducing BOM. 800 kSPS enables transient and inrush capture that slower delta-sigma converters miss, while SPI daisy-chaining supports monitoring multiple boards from one MCU interface.
موصى به
Battery-Powered IoT Sensors
The ADS7067 suits battery IoT nodes because throughput is SPI-programmable, letting firmware drop sample rate to cut average power. The 1.62 mm chip-scale package and capless reference minimize board area and quiescent BOM draw. Four GPIOs replace an external I/O expander for sensor-enable or alarm lines, further reducing cost and standby current in distributed multi-sensor nodes.
موصى به
Industrial Process Control
In PLC analog input modules, the ADS7067 converts up to 8 sensor channels - 4-20 mA receiver outputs, pressure and temperature signals - through one SPI link. 16-bit resolution resolves small process deviations, and the 800 kSPS rate supports fast scan rates across all channels. The capless reference maintains accuracy without periodic external-reference calibration in dense module designs.
موصى به
Test and Measurement
Portable and handheld instruments benefit from the ADS7067's combination of 16-bit accuracy, 800 kSPS sampling, and tiny chip-scale footprint. The 8 muxed channels let one device scan multiple test points, while the SPI register map allows firmware-controlled range and sequencing. Low conversion latency of the SAR architecture yields deterministic sampling intervals required for waveform reconstruction.
موصى به
Automotive Body and Power Supervision
In automotive modules the ADS7067 supervises multiple rails and sensor outputs through its 8 channels, with GPIO alarm thresholds providing autonomous over/under-voltage flagging to the MCU. The small wafer-scale package suits densely packed body-control and battery-management boards. SPI daisy-chaining lets several ADCs share one isolated controller interface, cutting wiring complexity.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ADS7067 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | ADS7066IYBHR | ADS7065IYBHR | ADS7067IYBHT |
|---|---|---|---|---|
| Package | 16-DSBGA (1.62x1.62 mm) | 16-DSBGA (1.62x1.62 mm) - same | 16-DSBGA (1.62x1.62 mm) - same | 16-DSBGA (1.62x1.62 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Channels | 8 | 4 | 4 | 8 |
| Max Throughput | 800 kSPS | 250 kSPS | 800 kSPS | 800 kSPS |
| Reference | Integrated capless + buffer | Integrated capless + buffer | Integrated capless + buffer | Integrated capless + buffer |
| GPIOs | 4 | 4 | 4 | 4 |
| Interface | SPI (daisy-chain) | SPI (daisy-chain) | SPI (daisy-chain) | SPI (daisy-chain) |
أبرز الفروقات
- Double the channels and 3.2x the speed of ADS7066 (مقابلADS7066IYBHR)
- Capless integrated reference eliminates external reference IC (مقابلADS131M08)
- Full 800 kSPS retained in 4-channel sibling (مقابلADS7065IYBHR)
ملاحظات التصميم
Place 0.1 uF and 1 uF ceramic decoupling capacitors immediately adjacent to the AVDD and DVDD balls of the 16-DSBGA package; with a 1.62 mm x 1.62 mm footprint, ball-pitch routing is extremely tight, so define the footprint per the TI datasheet land-pattern table before layout. Although the reference is capless, minimize capacitance coupling into the REF node per datasheet layout section.
Keep SPI traces short (<10 cm) and series-terminate SCLK to reduce ringing at high SPI clocks. Because AIN inputs are multiplexed, ensure the driving source settles within the acquisition window - use an RC with a buffer op-amp (e.g., OPA2192) when source impedance exceeds the datasheet recommendation, or measured accuracy at 800 kSPS will degrade.
Firmware migration from ADS7065/ADS7066 to ADS7067 fails if channel-scan code assumes 4 channels - update the multiplexer sequencing and verify GPIO alarm register defaults. Do not exceed datasheet absolute maximum ratings on AIN with respect to ground; unprotected mux inputs are sensitive to transients in motor-drive environments - add clamp/protection per TI analog front-end app notes.
معلومات الامتثال
RoHS compliant and lead-free per TI product page and distributor listings. AEC-Q100 status not stated in provided data.
