AD7472ARUZ-REEL - 12-Bit 1.5MSPS SAR ADC | Analog Devices
MPN: AD7472ARUZ-REEL ✓ Hoạt độngAD7472ARUZ-REEL Tóm tắt
An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary search algorithm, an internal DAC, and a comparator to digitize an analog input one bit at a time over N clock cycles, where N equals the converter's resolution. SAR ADCs occupy the middle ground between flash converters (fastest, most power-hungry) and sigma-delta ADCs (highest resolution, lowest speed), making them ideal for general-purpose industrial, instrumentation, and communication applications that need single-shot or burst-mode conversion at hundreds of kSPS to a few MSPS. The AD7472 family sits in the data acquisition -> ADC -> SAR ADC -> semiconductor taxonomy of signal-chain components.
Key features include 12-bit resolution with no missing codes, a track-and-hold front end, low power consumption, and a wide input bandwidth suitable for multiplexed or single-channel systems. The wide 2.7 V to 5.25 V supply range allows designers to power the part directly from a 3.3 V or 5 V system rail, simplifying power-tree design. Industrial temperature grade (-40C to +85C) and TSSOP surface-mount packaging support compact PCB layouts.
Typical applications include industrial process control, portable and battery-powered instrumentation, data acquisition systems, optical networking modules, and motor control feedback loops. The parallel interface and moderate throughput make it well matched to embedded control tasks where deterministic latency is more important than serial-link compactness.
When designing with this ADC, place a low-ESR 100 nF decoupling capacitor close to the VDD pin and a bulk 10 uF capacitor on the supply rail. Provide a clean low-impedance reference voltage to the REFIN pin and ensure the analog input bandwidth is matched to the source impedance to avoid conversion errors.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes that complement the manufacturer datasheet for the AD7472ARUZ-REEL.
Bộ thay thế dễ dàng lắp đặt cho AD7472ARUZ-REEL — 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 AD7472ARUZ-REEL (cùng hình factor và footprint) — khác nhau ở Data Interface, Operating Temperature, Package, Packaging, Sampling Rate.
AD7472ARUZ-REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7472ARU-REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7472ARUZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7470ARUZ-REEL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7470ARUZ-REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7470ARU-REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7472ARUZ-REEL Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 12 bits |
| Number of Channels | 1 |
| Converter Type | SAR (Successive Approximation) |
| Tỷ lệ lấy mẫu | 1.5 MSPS |
| Input Voltage Range (VDD) | 2.7 V to 5.25 V |
| Data Interface | Parallel |
| Power Consumption (3 V, 1.5 MSPS) | 3.34 mW typical |
| Power Consumption (5 V, 1.5 MSPS) | 7.97 mW typical |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 24-TSSOP (RU-24), 4.40 mm width |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel |
| Input Type | Single-Ended |
| Architecture | Track-and-Hold front end |
| Trạng thái RoHS | Compliant |
| Temperature Grade | Industrial |
Cấu hình chân AD7472ARUZ-REEL
| Chân 1 | VREF — Reference voltage input |
| Chân 2 | VIN — Analog input (single-ended) |
| Chân 3 | AGND — Analog ground |
| Chân 4 | CS — Chip select (active low) |
| Chân 5 | RD — Read input (active low) |
| Chân 6 | CONVST — Conversion start (active high) |
| Chân 7 | BUSY — Busy output (active high during conversion) |
| Chân 8 | DGND — Digital ground |
| Chân 9 | DB0 — Data output bit 0 (LSB) |
| Chân 10 | DB1 — Data output bit 1 |
| Chân 11 | DB2 — Data output bit 2 |
| Chân 12 | DB3 — Data output bit 3 |
| Chân 13 | DB4 — Data output bit 4 |
| Chân 14 | DB5 — Data output bit 5 |
| Chân 15 | DB6 — Data output bit 6 |
| Chân 16 | DB7 — Data output bit 7 |
| Chân 17 | DB8 — Data output bit 8 |
| Chân 18 | DB9 — Data output bit 9 |
| Chân 19 | DB10 — Data output bit 10 |
| Chân 20 | DB11 — Data output bit 11 (MSB) |
| Chân 21 | VDD — Power supply (2.7 V to 5.25 V) |
| Chân 22 | VDD — Power supply (2.7 V to 5.25 V) |
| Chân 23 | NC — Not connected (per datasheet) |
| Chân 24 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
AD7472ARUZ-REEL phù hợp cho 6 Áp dụngs: Industrial Process Control, Portable Battery-Powered Instrumentation, Data Acquisition Systems, Optical Networking Modules, Motor Control Feedback, Medical Instrumentation.
Industrial Process Control
The AD7472ARUZ-REEL's 12-bit resolution at 1.5 MSPS makes it well suited to industrial process-control loops where a sensor signal must be digitised at high speed and routed to a microcontroller. Its wide 2.7 V to 5.25 V input range lets the converter ride on the same 24 V-derived 5 V analog rail that powers the front-end signal conditioning. The 3.34 mW typical power at 3 V / 1.5 MSPS keeps board thermal rise low inside enclosed industrial enclosures. The parallel interface provides deterministic latency, which is critical for closed-loop control of pressure, flow, and temperature. The TSSOP-24 footprint and -40C to +85C industrial grade suit harsh factory-floor environments.
Được đề xuất
Portable Battery-Powered Instrumentation
The AD7472ARUZ-REEL's 3.34 mW typical dissipation at 3 V and 1.5 MSPS makes it a strong fit for handheld multimeters, portable gas analyzers, and battery-powered data loggers where every microwatt matters. The 2.7 V lower supply limit allows direct operation from a single Li-ion cell (3.0 V to 4.2 V) without an LDO, simplifying the power tree. The 1.5 MSPS burst-mode throughput captures transient sensor events while the converter idles at low current between samples. The 24-TSSOP package keeps the analog front end compact, leaving board area for the battery and display.
Được đề xuất
Data Acquisition Systems
The AD7472ARUZ-REEL provides a single-channel 1.5 MSPS analog front end for medium-speed DAQ boards, particularly when paired with an external analog multiplexer (MUX) that scans multiple channels. The parallel digital bus connects cleanly to FPGAs and DSPs that buffer and post-process the conversion stream. The 12-bit no-missing-codes performance preserves linearity for instrumentation-quality measurements, while the industrial -40C to +85C rating supports laboratory and field-deployed DAQ enclosures. Designers stack two AD7472ARUZ-REEL devices on different analog rails to double channel density without breaking timing margins.
Được đề xuất
Optical Networking Modules
The AD7472ARUZ-REEL delivers 12-bit, 1.5 MSPS conversion for SFP, XFP, and optical-line-card modules that monitor transmit-power and receive-signal-strength levels in real time. Its small 24-TSSOP package and low 7.97 mW dissipation at 5 V keep thermal load low in sealed optical modules. The parallel interface is compatible with FPGA-based CDR/MAC controllers that already manage a high-speed parallel bus. The 2.7 V to 5.25 V supply range is tolerant of the noisy 3.3 V rails common in optical modules, and the 12-bit resolution resolves the small photodiode voltages typical of laser-bias monitoring loops.
Được đề xuất
Motor Control Feedback
The AD7472ARUZ-REEL's 1.5 MSPS throughput and parallel interface deliver deterministic phase-current and DC-bus voltage sampling for BLDC and PMSM motor drives. With 12-bit resolution it captures the full current ripple waveform above the PWM fundamental, supporting advanced field-oriented control (FOC) algorithms. The 24-TSSOP package handles the wide 0 V to 5 V analog range needed at the output of current-sense amplifiers after their gain stage. The parallel output bus feeds directly into DSP or FPGA motor controllers without adding serial-interface latency, which is essential for sub-microsecond current-loop update rates.
Được đề xuất
Medical Instrumentation
The AD7472ARUZ-REEL's 12-bit linearity at 1.5 MSPS suits medical instrumentation front ends such as patient monitors, bedside diagnostic devices, and laboratory analyzers where 12-bit resolution adequately resolves amplified bio-signal voltages. The low 3.34 mW power dissipation at 3 V enables battery-powered portable designs with extended operating time, important for ambulatory patient monitors. The parallel interface provides a clean deterministic conversion-to-DSP path for ECG, SpO2, and temperature front ends. Industrial temperature grade and lead-free / RoHS-compliant assembly support modern medical device certification.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7472ARUZ-REEL — 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 | AD7472ARUZ-REEL7 | AD7472ARU-REEL7 | AD7472ARUZ | AD7470ARUZ-REEL | AD7470ARUZ-REEL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-TSSOP (RU-24) | 24-TSSOP (RU-24) - same | 24-TSSOP (RU-24) - same | 24-TSSOP (RU-24) - same | 24-TSSOP (RU-24) - same | 24-TSSOP (RU-24) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 10 bits | 10 bits |
| Sampling Rate | 1.5 MSPS | 1.5 MSPS | 1.5 MSPS | 1.5 MSPS | 1.75 MSPS | 1.75 MSPS |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Supply Voltage Range | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Lead-Free / RoHS | Yes (Z suffix) | Yes (Z suffix) | No (legacy Pb) | Yes (Z suffix) | Yes (Z suffix) | Yes (Z suffix) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Highest throughput in AD747x family (vsAD7470ARUZ-REEL)
- Lead-free RoHS-compliant assembly (vsAD7472ARU-REEL7)
- Standard 13-inch reel packaging (vsAD7472ARUZ-REEL7)
Ghi chú thiết kế
Estimated: the AD7472ARUZ-REEL draws about 3.34 mW typical at 3 V and 1.5 MSPS, and 7.97 mW at 5 V and 1.5 MSPS, both with VDD-only current (no external analog load). Place a 100 nF X7R ceramic decoupling capacitor within 5 mm of the VDD pin and add a bulk 10 uF tantalum or ceramic capacitor on the supply rail. Avoid running digital traces parallel to and under the analog input traces to minimise switching noise coupling into the input.
Do not apply a reference voltage above VDD on the VREF pin or above 0 V to AVREF; both can permanently damage the device. The BUSY pin remains HIGH during conversion, so the host must wait for BUSY to fall before reading DB0-DB11. Driving CS high during conversion aborts the conversion cycle, which can leave internal capacitors in an undefined state - always allow a full conversion cycle to complete before resetting the part.
For best THD and SNR performance, the analog input trace should be short and guarded by a ground plane on both sides, with the AGND pin star-grounded to the analog ground plane and DGND kept separate from AGND except at one common point near the ADC. Add a small RC low-pass filter (typically 10 ohm + 100 pF) on the analog input if the source impedance is above 50 ohm. The TSSOP-24 exposed pad (if present) should be soldered to the analog ground plane to provide a thermal path.
Estimated: the parallel digital bus (DB0-DB11) outputs settle in less than one clock period, but if the bus is loaded with high capacitance (more than 50 pF total) or connected to a long PCB trace, add 22-33 ohm series damping resistors at each output. Drive the parallel bus directly into an FPGA or DSP GPIO bank, not a long ribbon cable, to avoid reflections that would corrupt the conversion result. Use short, matched-length traces for DB0-DB11 to keep the digital switching edge rates aligned.
Thông tin tuân thủ
The 'Z' suffix in AD7472ARUZ-REEL denotes lead-free RoHS-compliant matte-tin terminations per the Analog Devices package designation guide. Not AEC-Q100 qualified (industrial temperature grade only). Conflict-minerals statement is per the Analog Devices supplier declaration.
