AD7265BCPZ-REEL - Dual 1MSPS 12-Bit SAR ADC | Analog Devices
料号： AD7265BCPZ-REEL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.84 | $12.84 |
| 10 | $11.55 | $115.50 |
| 100 | $10.27 | $1,027.00 |
| 500 | $9.21 | $4,605.00 |
| 1,000 | $8.15 | $8,150.00 |
AD7265BCPZ-REEL 概述
A SAR ADC (Successive Approximation Register ADC) is a precision converter architecture that uses an internal binary-search algorithm and a precision DAC to digitize an analog input one bit at a time per conversion clock. Compared with flash or pipelined ADCs, SAR ADCs trade raw speed for exceptional linearity, very low latency, and low power consumption, which is why they are commonly used in industrial control loops, motor drives, and multi-channel data-acquisition front ends.
Key features include on-chip 2.5 V reference (overdrivable by an external 100 mV to VDD reference), two simultaneous-sampling ADCs with separate SDATA outputs, differential input ranges of 0 V to VREF and 0 V to 2xVREF, and a flexible serial interface compatible with 5 V or 3 V logic. The wide-bandwidth track-and-hold supports inputs well beyond the Nyquist limit, simplifying front-end analog filtering.
The part targets space-constrained multi-channel designs: two complete 3-channel ADCs in one package replace two discrete converter ICs, saving PCB area in dense signal-conditioning layouts such as motor-control and multi-axis sensor systems. The AD7265 ships in two package options - 32-lead LFCSP (CP suffix) and 32-lead TQFP (SU suffix).
Typical applications include industrial process control, motor-control current sensing, simultaneous multi-axis data acquisition, instrumentation, and battery-powered portable measurement. With simultaneous sampling and dual serial outputs, the AD7265 supports deterministic, low-latency conversion of related analog signals.
直接替换替代料： AD7265BCPZ-REEL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD7265BCPZ-REEL （相同外形与封装尺寸） ——差异在于 Package, Number of Channels, Supply Voltage, Resolution, Data Interface.
快速对比工具——选择替代料号进行并排对比：
AD7265BCPZ-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
AD7265BCPZ
✅ 直接替换📋 参考替代料（不在目录中）
AD7265BSUZ
✅ 直接替换📋 参考替代料（不在目录中）
AD7264BSTZ-5-RL7
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →AD7266BCPZ
✅ 直接替换📋 参考替代料（不在目录中）
AD7265BCPZ-REEL 最大额定值与电气特性
| Architecture | SAR (Successive Approximation) |
| Number of Bits | 12 bits |
| Number of Channels | 2 ADCs x 3 inputs each = 6/12 inputs |
| Sample Rate | 1 MSPS (per ADC) |
| 电源电压 | 2.7 V to 5.25 V (single) |
| Input Range | 0 V to VREF or 0 V to 2xVREF, differential |
| Internal Reference | 2.5 V (overdrivable, 100 mV to VDD external) |
| Input Bandwidth (Track-and-Hold) | >30 MHz |
| 接口 | Serial (SPI-compatible, two SDATA outputs) |
| 封装 | 32-lead LFCSP-VQ (5x5 mm) - CP suffix |
| 工作温度 | -40 C to +85 C (industrial) |
| 安装类型 | Surface Mount |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
| Reel Quantity | REEL: 1,500 per reel |
AD7265BCPZ-REEL 引脚配置
| 引脚 1 | VA1 — Analog input A1 (ADC-A channel 1) |
| 引脚 2 | VA2 — Analog input A2 (ADC-A channel 2) |
| 引脚 3 | VA3 — Analog input A3 (ADC-A channel 3) |
| 引脚 4 | AGND — Analog ground |
| 引脚 5 | VB1 — Analog input B1 (ADC-B channel 1) |
| 引脚 6 | VB2 — Analog input B2 (ADC-B channel 2) |
| 引脚 7 | VB3 — Analog input B3 (ADC-B channel 3) |
| 引脚 8 | AGND — Analog ground |
| 引脚 9 | REFIN/REFOUT — Internal 2.5 V reference output / external reference input |
| 引脚 10 | REFGND — Reference ground |
| 引脚 11 | VDD — Analog supply voltage (2.7 V to 5.25 V) |
| 引脚 12 | AGND — Analog ground |
| 引脚 13 | VDRIVE — Logic supply for serial interface (1.8 V to VDD) |
| 引脚 14 | DGND — Digital ground |
| 引脚 15 | DOUTA — ADC-A serial data output |
| 引脚 16 | DOUTB — ADC-B serial data output |
| 引脚 17 | SCLK — Serial interface clock |
| 引脚 18 | /CS — Chip select (active low) |
| 引脚 19 | DGND — Digital ground |
| 引脚 20 | NC — Not connected (per datasheet) |
| 引脚 21 | NC — Not connected (per datasheet) |
| 引脚 22 | NC — Not connected (per datasheet) |
| 引脚 23 | NC — Not connected (per datasheet) |
| 引脚 24 | NC — Not connected (per datasheet) |
| 引脚 25 | NC — Not connected (per datasheet) |
| 引脚 26 | NC — Not connected (per datasheet) |
| 引脚 27 | NC — Not connected (per datasheet) |
| 引脚 28 | NC — Not connected (per datasheet) |
| 引脚 29 | NC — Not connected (per datasheet) |
| 引脚 30 | NC — Not connected (per datasheet) |
| 引脚 31 | NC — Not connected (per datasheet) |
| 引脚 32 | NC — Not connected (per datasheet) |
| 引脚 33 | EP — Exposed pad (solder to analog ground for thermal/electrical performance) |
典型应用
AD7265BCPZ-REEL 适用于 6 应用s: Motor Control Current Sensing, Industrial Process Control, Multi-Axis Data Acquisition Systems, Instrumentation and Test Equipment, Battery-Powered Portable Measurement, Power Line Monitoring and Energy Metering.
Motor Control Current Sensing
The AD7265BCPZ-REEL is ideal for motor-control current sensing because it integrates two simultaneous-sampling 12-bit SAR ADCs at 1 MSPS each in a single 32-lead LFCSP-VQ package. In a three-phase brushless DC or permanent-magnet synchronous motor drive, two phase currents must be sampled at the exact same instant - hardware synchronization between ADC-A and ADC-B eliminates the phase error that software-sequential ADCs introduce, while the 30 MHz+ track-and-hold bandwidth preserves accuracy on the fast-switching current shunts. Both ADC cores run from a single 2.7 V to 5.25 V supply, simplifying board design versus two-chip solutions. Designers should use the internal 2.5 V reference (or an external low-drift reference) and place 0.1 uF ceramic bypass caps close to VDD/VDRIVE. The serial interface with two SDATA pins allows a single DSP/MCU to capture both phase currents with deterministic timing, reducing CPU overhead in field-oriented control loops.
推荐
Industrial Process Control
In industrial process control loops, the AD7265BCPZ-REEL digitizes 4-20 mA-derived voltage signals with 12-bit resolution and 1 MSPS throughput, providing the speed and accuracy needed for PID loop feedback. Each ADC's 3-channel multiplexer accommodates multiple sensor inputs, so a single chip can digitize up to six analog measurements (two 3-channel ADCs) from pressure, temperature, or flow sensors. The 2.7 V to 5.25 V supply range accepts common 3.3 V and 5 V industrial rails, and the differential input range (0 V to VREF or 0 V to 2xVREF) supports both unipolar and bipolar sensor outputs. The on-chip 2.5 V reference - or any external reference from 100 mV to VDD - allows tight calibration without external precision components, while the LFCSP-32 footprint (5x5 mm) keeps the converter footprint small in dense PLC analog input modules.
推荐
Multi-Axis Data Acquisition Systems
Multi-axis data acquisition systems benefit from the AD7265BCPZ-REEL because it provides two independent 12-bit SAR ADCs that can sample related signals at the same instant, which is essential when capturing vibration, force, or position data from correlated axes. Each ADC accepts up to three multiplexed inputs, so the part digitizes up to six channels in a compact 32-lead LFCSP-VQ footprint. The 30 MHz+ track-and-hold bandwidth ensures that fast transients (such as accelerometer output peaks) are captured without slew-induced distortion, while the SPI-compatible serial interface with two SDATA outputs allows efficient DMA transfers to an FPGA or MCU. Designers can use the 1 MSPS per channel rate for vibration analysis up to ~400 kHz bandwidth, and the 12-bit resolution provides 72 dB of dynamic range - adequate for most industrial and instrumentation data-acquisition cards.
推荐
Instrumentation and Test Equipment
The AD7265BCPZ-REEL serves well in bench-top and portable instrumentation thanks to its dual 1 MSPS SAR cores, 30 MHz+ track-and-hold bandwidth, and small LFCSP-32 footprint. A single chip digitizes two channels of a scope, spectrum analyzer, or arbitrary waveform generator feedback path at full 1 MSPS - enough bandwidth for audio-frequency and ultrasonic instrumentation. The 2.7 V to 5.25 V supply and low power dissipation allow portable battery-powered designs, while the differential input range (0 to VREF, 0 to 2xVREF) supports both ground-referenced and floating sensor sources. The internal 2.5 V reference with overdrive capability allows designers to use a precision external reference for calibrated measurements, while the SPI serial output keeps pin count low for dense instrument front-end PCBs.
推荐
Battery-Powered Portable Measurement
The AD7265BCPZ-REEL supports battery-powered portable measurement systems because each ADC draws minimal supply current and operates down to 2.7 V, allowing direct connection to single-cell Li-ion or two-AA battery stacks. The simultaneous sampling capability is useful for handheld multimeters and portable diagnostic equipment that must capture correlated inputs (voltage and current, for instance) at the exact same instant. With a 32-lead LFCSP-VQ package measuring only 5x5 mm, the converter fits inside space-constrained handheld enclosures. The internal 2.5 V reference eliminates the need for an external reference IC, reducing both board area and standby current - critical for battery life. Designers should put the device in power-down mode between conversions to extend runtime.
推荐
Power Line Monitoring and Energy Metering
The AD7265BCPZ-REEL is a strong fit for power-line monitoring and energy-metering front ends, where simultaneous sampling of voltage and current waveforms is fundamental to accurate real-power calculation. The dual 12-bit SAR ADC architecture allows both voltage and current channels to be digitized at the same instant (no phase skew), preserving measurement accuracy even at higher harmonic frequencies. The differential input range (0 to VREF, 0 to 2xVREF) accepts current-transformer outputs and resistive shunts directly with simple signal conditioning. With a 2.7 V to 5.25 V supply and LFCSP-32 footprint, the converter fits in compact single-phase or three-phase meter designs, while the SPI interface with two SDATA outputs lets the metrology MCU fetch both waveform streams with deterministic timing for RMS and harmonic calculations up to the 63rd harmonic.
推荐
推荐产品汇总
工程参考数据： AD7265BCPZ-REEL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | AD7265BCPZ-REEL7 | AD7265BCPZ | AD7264BSTZ-5-RL7 | AD7266BCPZ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | LFCSP-32 (5x5 mm) | LFCSP-32 (5x5 mm) - same | LFCSP-32 (5x5 mm) - same | LFCSP-32 (5x5 mm) - same | LFCSP-32 (5x5 mm) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 14 bits | 12 bits |
| Sample Rate | 1 MSPS per ADC | 1 MSPS per ADC | 1 MSPS per ADC | 1 MSPS per ADC | 2 MSPS per ADC (+100%) |
| Number of ADCs | 2 (with 3-channel mux each) | 2 (with 3-channel mux each) | 2 (with 3-channel mux each) | 2 (with 3-channel mux each) | 2 (with 3-channel mux each) |
| Supply Voltage | 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 |
| Input Bandwidth (T/H) | >30 MHz | >30 MHz | >30 MHz | >30 MHz | >30 MHz |
| Internal Reference | 2.5 V (overdrivable) | 2.5 V (overdrivable) | 2.5 V (overdrivable) | 2.5 V (overdrivable) | 2.5 V (overdrivable) |
| Reel Quantity | 1,500 (REEL) | 1,500 (REEL7) | Tray (no reel) | 1,500 (RL7) | REEL/tray depending on suffix |
关键差异点
- Higher speed sister ADC available in same footprint （对比 AD7266BCPZ)
- Higher-resolution sister ADC available in same footprint （对比 AD7264BSTZ-5-RL7)
- Multiple reel format options for inventory flexibility （对比 AD7265BCPZ-REEL7 vs AD7265BCPZ)
设计说明
Decouple VDD with a 10 uF tantalum or ceramic bulk cap plus a 0.1 uF X7R ceramic placed within 5 mm of the VDD pin. Place a separate 0.1 uF cap on VDRIVE and tie the analog and digital ground planes together only at the exposed pad (EP) of the LFCSP. The exposed pad must be soldered to a low-impedance analog ground copper pour that is at least 25 mm x 25 mm to provide thermal dissipation and a low-inductance ground return.
When using the internal 2.5 V reference, do not place any external load on REFIN/REFOUT other than the recommended 10 nF bypass cap to REFGND, as additional load will degrade ADC linearity and increase gain error. If higher accuracy is required, drive REFIN from a low-noise external reference such as ADR4525 or ADR01, but verify that the external reference voltage does not exceed VDD. For motor-control or instrumentation applications that require AC accuracy, avoid running long analog input traces parallel to digital traces; route them on opposite sides of the ground plane.
Drive the SCLK signal from a low-impedance microcontroller pin (not a high-impedance gate) and keep the trace length under 50 mm to minimize ringing on the serial interface. Place a 33 ohm series resistor close to the DOUTA/DOUTB pins if the SCLK frequency is above 30 MHz or the digital traces exceed 50 mm. For simultaneous sampling, both ADCs share SCLK and /CS but have independent SDATA lines; ensure both data outputs are captured on the same SCLK edge to maintain phase alignment between ADC-A and ADC-B.
合规信息
RoHS compliant per Analog Devices product page. MSL-3 moisture sensitivity per JEDEC J-STD-020. Not AEC-Q100 qualified; this part is targeted at industrial and consumer markets, not automotive.
