ADS7067 - 16-Bit 8-Channel 800kSPS SAR ADC | Texas Instruments
MPN: ADS7067 ✓ Hoạt độngADS7067 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ADS7067 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS7067 (cùng hình factor và footprint) — khác nhau ở Architecture, Interface, Mounting Type, Number of Channels, Package.
ADS7066IYBHR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS7065IYBHR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS7067IYBHT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS7067 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Number of Channels | 8 (multiplexed) |
| Tỷ lệ lấy mẫu | 800 kSPS |
| Architecture | SAR (successive approximation register) |
| Input Type | Single-ended |
| Reference | Integrated capless reference with buffer |
| Giao diện | SPI-compatible serial |
| GPIO | 4 configurable GPIOs with alarm function |
| Hộp | 16-DSBGA (1.62 mm x 1.62 mm) |
| Kiểu lắp đặt | Surface Mount (wafer-level chip scale) |
| Trạng thái RoHS | Compliant |
Hướng dẫn cấu hình chân ADS7067 16-dsbga (1.62 mm x 1.62 mm)
Cấu hình chân cho ADS7067 (16-dsbga (1.62 mm x 1.62 mm) gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho ADS7067.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADS7067 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS7067 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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) |
Bảo phân biệt quan trọng
- Double the channels and 3.2x the speed of ADS7066 (vsADS7066IYBHR)
- Capless integrated reference eliminates external reference IC (vsADS131M08)
- Full 800 kSPS retained in 4-channel sibling (vsADS7065IYBHR)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant and lead-free per TI product page and distributor listings. AEC-Q100 status not stated in provided data.
