ADS8372IRHPRG4 - 16-Bit 600kHz SAR ADC | Texas Instruments
MPN: ADS8372IRHPRG4 ✓ Hoạt độngADS8372IRHPRG4 Tóm tắt
A SAR (successive-approximation-register) ADC is a sub-category of data converter that performs a binary search through an internal capacitor-DAC array to converge on the input voltage in N clock cycles for N-bit resolution. SAR ADCs are prized for low latency, deterministic throughput, and excellent DC accuracy; in the data-converter taxonomy they sit alongside delta-sigma and pipeline converters as the dominant architectures for precision multi-channel and industrial applications. The ADS8372's fully differential pseudo-bipolar input is targeted at systems that need bipolar signal handling from a single supply.
Differentiating features of the ADS8372IRHPRG4 include the inherent sample-and-hold front-end (no external track-and-hold needed), the high-speed serial SPI/QSPI/MICROWIRE-compatible interface (up to 40 MHz), an industrial-grade temperature range, and the compact QFN-28 footprint with thermal pad for improved heat extraction. The pseudo-bipolar input allows the converter to digitize signals that swing both above and below the common-mode voltage from a single analog supply, simplifying analog front-end design in industrial sensors, motor control, and instrumentation.
At the architecture level, the device pairs a 16-bit capacitor-based SAR core with on-chip reference buffering and a precision input sampling network, giving designers a true 16-bit, no-missing-codes performance at 600 kSPS without external settling tricks. The 1.16 µs conversion time keeps acquisition latency low enough for closed-loop servo systems and multi-MUX data-acquisition front-ends where Nyquist-rate sampling must be deterministic.
Typical applications include industrial process-control data acquisition boards, multi-channel sensor digitizers, motor-control current-sense feedback loops, optical encoder / resolver read channels, and precision instrumentation front-ends. In all of these, the 16-bit resolution and 600 kSPS throughput provide adequate dynamic range for 4-20 mA, ±10 V, and shunt-based current sensing.
When designing with this device, observe the input common-mode voltage requirements of the pseudo-bipolar input stage and decouple the REFP/REFN pins with low-ESR ceramic capacitors placed as close to the package as possible, ideally over the exposed thermal pad for short return paths.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including comparison data against same-package alternatives and recommended companion ICs.
Bộ thay thế dễ dàng lắp đặt cho ADS8372IRHPRG4 — 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 ADS8372IRHPRG4 (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, Number of Input Channels, Operating Temperature Range, Digital Interface.
ADS8372IRHPTG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS8372IRHP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS8372IRHPRG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS8372IBRHPRG4
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADS8372IRHP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS8372IRHPRG4 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bits |
| Architecture | SAR (Successive Approximation Register) |
| Sample Rate | 600 kSPS |
| Conversion Time | 1.16 us (typ) |
| Number of Input Channels | 1 (fully differential pseudo-bipolar) |
| Input Type | Fully differential, pseudo-bipolar |
| Integral Nonlinearity (max) | 0.0023 % |
| Digital Interface | High-speed serial CMOS (SPI/QSPI/MICROWIRE-compatible) |
| Maximum Serial Clock | 40 MHz |
| Hộp | QFN-28 (RHP / HVQCCN), 6 mm × 6 mm with thermal pad |
| Kiểu lắp đặt | Surface Mount |
| Number of Terminals | 28 |
| Package Code (JEDEC) | HVQCCN |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Temperature Grade | Industrial |
Cấu hình chân ADS8372IRHPRG4
| Chân 1 | AVDD — Analog supply voltage |
| Chân 2 | IN+ — Positive analog input (differential) |
| Chân 3 | IN- — Negative analog input (differential) |
| Chân 4 | VCM — Common-mode voltage output buffer |
| Chân 5 | REFP — Positive reference decoupling point |
| Chân 6 | REFN — Negative reference decoupling point |
| Chân 7 | REFOUT — Internal reference output |
| Chân 8 | REFIN — External reference input |
| Chân 9 | DGND — Digital ground |
| Chân 10 | DVDD — Digital supply voltage |
| Chân 11 | CS — Chip select (active low) |
| Chân 12 | SCLK — Serial clock input |
| Chân 13 | DOUT — Serial data output |
| Chân 14 | BUSY — Conversion in progress (active high) |
| Chân 15 | RANGE — Input range select |
| Chân 16 | RESET — Reset (active low) |
| Chân 17 | PD — Power down (active high) |
| Chân 18 | NC — Not connected |
| Chân 19 | NC — Not connected |
| Chân 20 | NC — Not connected |
| Chân 21 | NC — Not connected |
| Chân 22 | NC — Not connected |
| Chân 23 | NC — Not connected |
| Chân 24 | NC — Not connected |
| Chân 25 | NC — Not connected |
| Chân 26 | NC — Not connected |
| Chân 27 | NC — Not connected |
| Chân 28 | EP — Exposed thermal pad (connect to analog ground) |
Ứng dụng tiêu biểu
ADS8372IRHPRG4 phù hợp cho 6 Áp dụngs: Industrial Process Control Data Acquisition, Multi-Channel Sensor Digitizer Front-End, Motor Control Current Sense Feedback, Optical Encoder / Resolver Signal Readout, Precision Instrumentation Front-Ends, Medical Signal Acquisition Module.
Industrial Process Control Data Acquisition
Process-control front-ends require deterministic Nyquist-rate sampling of 4-20 mA and ±10 V signals without the latency added by sigma-delta modulators. The ADS8372IRHPRG4's 600 kSPS throughput and 1.16 microsecond conversion time let a single ADC service multiple multiplexed analog inputs at high update rates, while the 16-bit resolution preserves adequate dynamic range for control-loop feedback. Fully differential pseudo-bipolar input simplifies common-mode rejection on long sensor cables; the QFN-28 thermal pad efficiently extracts the small local dissipation.
Được đề xuất
Multi-Channel Sensor Digitizer Front-End
Strain gauge, RTD, and bridge-sensor arrays need high channel density and consistent per-channel latency for synchronized sampling. The ADS8372IRHPRG4's serial SPI/QSPI-compatible interface (up to 40 MHz) allows multiple ADCs to share a single MCU SPI bus with separate CS lines, dramatically increasing channel count per controller. Inherent sample-and-hold eliminates external track-and-hold stages; the industrial -40 to +85 °C range supports outdoor and factory deployments.
Được đề xuất
Motor Control Current Sense Feedback
Field-oriented control (FOC) of brushless and servo motors requires low-latency current-sense feedback sampled at the PWM carrier frequency. The ADS8372IRHPRG4's 1.16 microsecond conversion time and 600 kSPS throughput easily handle the 10-50 kHz current-loop rates used in servo drives. Fully differential input accepts bipolar currents across a shunt on the DC bus; high common-mode rejection from the differential input prevents switching noise from corrupting the torque loop.
Được đề xuất
Optical Encoder / Resolver Signal Readout
High-precision rotary encoders, resolver-to-digital converters, and LIDAR time-of-flight readout often quantize analog signals derived from sinusoidal excitation at moderate bandwidths. The ADS8372IRHPRG4 offers 16-bit deterministic conversion of these filtered analog signals, giving repeatable position decoding. Its QFN-28 footprint plus tiny power dissipation makes it a good fit for compact encoder/receiver modules.
Được đề xuất
Precision Instrumentation Front-Ends
Bench-top multimeters, data loggers, and laboratory digitizers need 16-bit DC accuracy with deterministic latency. The ADS8372IRHPRG4's 600 kSPS throughput and 16-bit SAR architecture provide a true 16-bit no-missing-codes acquisition engine with no conversion-rate dependent noise. Combined with a precision op-amp front-end and a high-accuracy voltage reference, the assembly yields a 6.5-digit-class measurement channel.
Được đề xuất
Medical Signal Acquisition Module
Patient-monitoring and diagnostic instruments require reliable 16-bit acquisition of ECG, EEG and pulse-oximetry signals in the presence of common-mode noise. The ADS8372IRHPRG4's fully differential pseudo-bipolar input plus 40 MHz serial output enables clear digitization of low-amplitude biopotential signals with strong common-mode rejection. The compact QFN-28 and industrial -40 to +85 °C operating range suit portable patient-worn and bedside equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS8372IRHPRG4 — 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 | ADS8372IRHPTG4 | ADS8372IRHP | ADS8372IBRHPRG4 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | QFN-28 (RHP / HVQCCN), 6x6 mm | QFN-28 (RHP / HVQCCN), 6x6 mm | QFN-28 (RHP / HVQCCN), 6x6 mm | QFN-28 (RHP / HVQCCN), 6x6 mm |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sample Rate | 600 kSPS | 600 kSPS | 600 kSPS | 600 kSPS |
| Architecture | SAR | SAR | SAR | SAR |
| Input Configuration | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar |
| Serial Clock Max | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Conversion Time | 1.16 us | 1.16 us | 1.16 us | 1.16 us |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Lifecycle / Suffix Variant | QFN-28 industrial, Pb-free/Green (G4) | QFN-28 industrial, alternate reel/finish (T4) | QFN-28 industrial, base finish | QFN-28 industrial, additional reel-code variant |
Bảo phân biệt quan trọng
- Single ADC part with green-finish / Pb-free tape and reel finish variant (vsADS8372IRHPTG4)
- Same QFN-28 footprint as its own variants for layout reuse (vsADS8372IBRHPRG4)
- Distinguishable by exact suffix even though die is identical (vsADS8372IRHP)
Ghi chú thiết kế
The exposed thermal pad on the QFN-28 (RHP) package must be soldered to a copper pour that is stitched to the analog ground plane with multiple vias to provide both thermal dissipation and a clean reference for the differential input. According to the Texas Instruments ADS8372 datasheet, leaving the EP floating will degrade ADC noise performance and can cause conversion drift; the EP also carries the analog ground bond wire, so it must not be left isolated.
Decouple AVDD and DVDD separately with 10 uF X7R ceramic capacitors in parallel with 0.1 uF NP0/C0G ceramics placed as close as possible to the respective supply pins. The digital and analog grounds should be tied together only at one point under the EP, never with separate traces routed to the system ground - this star-grounding topology reduces the digital switching noise that couples into REFP/REFN.
Keep the serial interface traces (CS, SCLK, DOUT, BUSY) short and routed with a ground reference on an adjacent layer to control reflections on the 40 MHz clock edge. When the ADC sits far from the host MCU, add a 33 ohm series resistor near the source of SCLK to damp over/undershoot. DOUT edges are particularly critical because they are the only feedback path that the host uses to determine when to clock out new conversions.
Do not drive the fully differential pseudo-bipolar input with a single-ended source larger than the absolute maximum without a dedicated driver amplifier - the input common-mode voltage must stay within the AVDD-supplied range defined in the ADS8372 datasheet. Avoid routing the analog input pair across long PCB traces with split ground planes; instead route them together as a tightly coupled differential pair above a continuous ground.
Thông tin tuân thủ
Industrial ADC product, not AEC-Q100 qualified; automotive customers should evaluate AEC-Q100 equivalent parts in the ADS78xx family. RoHS / REACH status not explicitly shown in the verified web data - G4 suffix typically denotes Pb-free / green per TI suffix convention but should be confirmed from the manufacturer datasheet before designing in.
