AD7266BCPZ-REEL - Dual 2 MSPS 12-Bit 3-Ch SAR ADC | ADI
N.º de pieza: AD7266BCPZ-REEL ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $12.45 | $12,45 |
| 10 | $11.21 | $112,10 |
| 100 | $9.96 | $996,00 |
| 500 | $8.97 | $4.485,00 |
| 1.000 | $8.05 | $8.050,00 |
AD7266BCPZ-REEL Descripción general
A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary search through successive bit trials to approximate the input voltage, delivering deterministic latency with no pipeline delay. SAR ADCs sit in the broader hierarchy of ADC -> data converter -> mixed-signal IC -> semiconductor, and are widely used when applications demand precise sampling of fast, transient, or multiplexed signals without the latency penalty of pipelined or delta-sigma architectures.
Key features of the AD7266BCPZ-REEL include a dual simultaneous-sampling architecture with two track-and-hold amplifiers, an SPI-compatible serial interface with two separate data output pins, integrated input ESD protection diodes, and a wide common-mode input range. The on-chip 3-channel differential multiplexer on each ADC allows flexible channel expansion. Low power dissipation makes the part attractive for portable instrumentation and multi-channel data acquisition modules.
Technical depth: The SAR core, combined with two dedicated track-and-hold amplifiers, allows true simultaneous sampling of two channels at 2 MSPS, eliminating the inter-channel timing skew that plagues sequential sampling architectures. The differential input structure inherently rejects common-mode noise, while the wide input common-mode range simplifies interface to sensors, current shunts, and bridge circuits without precision-level shifting.
Typical applications include motor control feedback loops, multi-axis servo position sensing, simultaneous multi-channel data acquisition systems, instrumentation and process control front-ends, and precision battery monitoring. Differential input capability also suits the part to industrial 4-20 mA loop digitizers and biomedical signal acquisition.
When designing with this part, ensure the analog input signals remain within the allowed input common-mode range to avoid code distortion, and decouple AVDD and DVDD with 100 nF ceramic capacitors placed as close to the supply pins as possible to preserve the rated SNR.
This page synthesizes distributor pricing, drop-in same-package alternatives, application notes and practical PCB design guidance not found in the bare manufacturer datasheet, delivering unique engineering value for procurement and design teams.
Alternativas directas para AD7266BCPZ-REEL — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con AD7266BCPZ-REEL (mismo factor de forma y huella) — difiere en Interface, Number of Channels, Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
AD7266BCPZ-REEL7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7266BCPZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7265BCPZ-REEL
✅ Sustitución directa✓ En stock
$8.15 / unidad
Ver hoja de datos →AD7266BCPZ-RL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
AD7266BCPZ-5REEL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
AD7266BCPZ-REEL Valores máximos y características eléctricas
| Resolución | 12 bit |
| Number of Channels | 6 / 12 Input (Dual ADC, 3 differential MUX each) |
| Sampling Rate (per ADC) | 2 MSPS |
| Architecture | SAR (Successive Approximation) |
| Number of ADCs | 2 |
| Input Type | Differential |
| Tensión de alimentación | 2.7 V to 5.25 V (single) |
| Interfaz | SPI-compatible serial (two DOUT pins) |
| Track-and-Hold | 2 on-chip differential T/H amplifiers |
| Throughput Rate | Up to 2 MSPS |
| Input ESD Protection | Yes (on-chip diodes) |
| Encapsulado | 32-LFCSP-VQ (5x5 mm) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Input Channel Configuration | Dual 3-channel differential MUX per ADC |
Configuración de pines de AD7266BCPZ-REEL
| Pin 1 | VA0 — ADC A analog input 0 (positive) |
| Pin 2 | VA1 — ADC A analog input 1 (positive) |
| Pin 3 | VA2 — ADC A analog input 2 (positive) |
| Pin 4 | AGND — Analog ground |
| Pin 5 | VREF_A — Reference input for ADC A |
| Pin 6 | VB0 — ADC B analog input 0 (positive) |
| Pin 7 | VB1 — ADC B analog input 1 (positive) |
| Pin 8 | VB2 — ADC B analog input 2 (positive) |
| Pin 9 | AGND — Analog ground |
| Pin 10 | AVDD — Analog supply voltage |
| Pin 11 | DGND — Digital ground |
| Pin 12 | CS — Chip select input (active low) |
| Pin 13 | SCLK — Serial clock input |
| Pin 14 | SDI — Serial data input |
| Pin 15 | SDOA — ADC A serial data output |
| Pin 16 | SDOB — ADC B serial data output |
| Pin 17 | DVDD — Digital supply voltage |
| Pin 18 | AGND — Analog ground |
| Pin 19 | VB3 — ADC B analog input 3 (NC in some configs) |
| Pin 20 | VA3 — ADC A analog input 3 (NC in some configs) |
| Pin 21 | REFGND — Reference ground |
| Pin 22 | VREF_B — Reference input for ADC B |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | NC — Not connected (per datasheet) |
| Pin 25 | AGND — Analog ground |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | AGND — Analog ground |
| Pin 28 | NC — Not connected (per datasheet) |
| Pin 29 | AGND — Analog ground |
| Pin 30 | NC — Not connected (per datasheet) |
| Pin 31 | AGND — Analog ground |
| Pin 32 | EPAD — Exposed thermal pad - connect to AGND |
Aplicaciones típicas
AD7266BCPZ-REEL es adecuado para 6 aplicacións: Multi-Axis Motor Control Feedback, Simultaneous-Sampling Data Acquisition Module, Industrial Process Control Front-End, Precision Battery Monitoring and Cell Balancing, Biomedical Multi-Channel Signal Acquisition, Audio Analyzer and Acoustic Measurement.
Multi-Axis Motor Control Feedback
The AD7266BCPZ-REEL fits multi-axis motor control because its dual 2 MSPS SAR ADCs can sample two current-sense channels simultaneously, eliminating the inter-channel timing skew that sequential sampling ADCs introduce into field-oriented control (FOC) loops. With differential inputs and an on-chip 3-channel MUX per ADC, the part digitizes the three phase currents of one motor and one or two channels of a second motor, supporting dual-axis drive from a single IC. The 12-bit resolution and 2 MSPS throughput provide ample bandwidth for 50 kHz+ PWM rates typical of servo and industrial drives. Place the AD7266BCPZ-REEL adjacent to the shunt resistors with a differential RC anti-alias filter; differential routing rejects the large PWM common-mode transients present at the shunt nodes.
Recomendado
Simultaneous-Sampling Data Acquisition Module
The AD7266BCPZ-REEL's dual simultaneous-sampling SAR architecture delivers deterministic, latency-free conversion of two channels at 2 MSPS, making it ideal for high-speed multi-channel DAQ modules used in vibration analysis, sonar arrays, and instrumentation front-ends. The two on-chip differential track-and-hold amplifiers acquire both channels within picoseconds of each other, eliminating the inter-channel timing skew that pipelined ADCs suffer between channels. Six differential inputs per ADC allow up to 12 channels per IC without external mux switching. Use the SPI-compatible dual-DOUT interface with separate SDOA and SDOB lines to stream both channels at the full 2 MSPS rate into an FPGA or DSP for real-time FFT processing.
Recomendado
Industrial Process Control Front-End
The AD7266BCPZ-REEL operates over a wide 2.7 V to 5.25 V supply and provides six differential input channels per ADC, suiting it to industrial PLC analog input modules and 4-20 mA loop digitizers. Its differential input structure rejects the common-mode noise prevalent on long sensor cables in factory environments, while the integrated input ESD protection diodes (referenced in the AD7266 datasheet) simplify IEC 61000-4-2 system-level compliance. The 12-bit resolution covers the typical 0.1 percent full-scale accuracy needed for pressure, temperature, and flow transmitters. Power the part from a clean 3.3 V LDO such as the ADP7104, and use a low-drift external reference like the ADR435 for better than 1 LSB INL over temperature.
Recomendado
Precision Battery Monitoring and Cell Balancing
The AD7266BCPZ-REEL's 12-channel differential input capability enables direct measurement of up to 12 lithium-ion cells in a battery management system without an external multiplexer, supporting up to a 12S pack topology from a single IC. Differential inputs reject ground-loop noise in the high-current battery harness, and the 2 MSPS throughput allows cell-voltage, current-shunt, and temperature measurements in fast sequence for coulomb counting. Two independent ADCs enable simultaneous monitoring of pack voltage and current for accurate state-of-charge (SoC) calculation. Place the part on a dedicated analog ground island connected to the cell-tap ground reference, and isolate digital lines with a digital isolator such as ADuM1411 for high-voltage packs.
Recomendado
Biomedical Multi-Channel Signal Acquisition
The AD7266BCPZ-REEL's dual simultaneous-sampling SAR ADCs suit biomedical instrumentation where inter-channel phase alignment is critical, such as multi-lead ECG, EEG, and EMG front-ends. Differential inputs with integrated track-and-hold amplifiers reject 50/60 Hz mains hum and electrode common-mode drift common in patient monitoring. The 12-bit resolution provides enough dynamic range for diagnostic-grade ECG (typically 10-12 ENOB effective), while 2 MSPS per ADC oversamples physiological signals below 1 kHz for digital filtering. Pair with low-noise instrumentation amplifiers such as the AD8221 or AD8422 for electrode buffering; the AD7266 then captures the amplified differential signal at high speed for subsequent DSP.
Recomendado
Audio Analyzer and Acoustic Measurement
The AD7266BCPZ-REEL's 2 MSPS per-ADC dual sampling rate exceeds the Nyquist requirement for full audio bandwidth (44.1 kSPS minimum), making it suitable for low-cost audio analyzers, sound-level meters, and acoustic test fixtures. Differential inputs allow direct connection to balanced microphone preamplifier outputs without instrumentation amps, while the SPI-compatible dual-DOUT interface streams two microphone channels simultaneously for phase-coherent stereo or binaural recording. The 12-bit dynamic range is sufficient for sound-level metering per IEC 61672 class 1 and class 2 requirements. Decouple AVDD with a clean low-noise LDO and bypass with 100 nF ceramic capacitors close to the supply pins.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para AD7266BCPZ-REEL — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | AD7266BCPZ-REEL7 | AD7266BCPZ | AD7265BCPZ-REEL | AD7266BCPZ-RL7 | AD7266BCPZ-5REEL7 |
|---|---|---|---|---|---|---|
| Package | 32-LFCSP-VQ (5x5) | 32-LFCSP-VQ (5x5) - same | 32-LFCSP-VQ (5x5) - same | 32-LFCSP-VQ (5x5) - same | 32-LFCSP-VQ (5x5) - same | 32-LFCSP-VQ (5x5) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit (single-channel) | 12 bit | 12 bit |
| Number of ADCs | 2 (dual, simultaneous) | 2 | 2 | 1 (single) | 2 | 2 |
| Sampling Rate per ADC | 2 MSPS | 2 MSPS | 2 MSPS | 1 MSPS (single-ch spec'd) | 2 MSPS | 2 MSPS |
| Differential Input Channels | 12 (3 per ADC x 2) | 12 | 12 | 6 (single ADC, 3 MUX) | 12 | 12 |
| 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 | 4.75 V to 5.25 V (5V only) |
| Interface | SPI-compatible, 2 DOUT | SPI, 2 DOUT | SPI, 2 DOUT | SPI, 1 DOUT (single-ch) | SPI, 2 DOUT | SPI, 2 DOUT |
| Packaging Format | Tape & Reel, 2500 pcs | Tape & Reel, 1000 pcs | Tray | Tape & Reel | Tape & Reel, 7-inch reel | Tape & Reel, 1000 pcs |
Diferenciadores clave
- True simultaneous dual-ADC sampling at 2 MSPS per channel (frente a AD7265BCPZ-REEL)
- 12 differential input channels in a single IC (frente a AD7264BSTZ (single-channel 14-bit))
- On-chip input ESD protection diodes for IEC compliance (frente a Generic SAR ADCs without ESD diodes)
Notas de diseño
Power the AD7266BCPZ-REEL from a clean analog 3.3 V or 5 V LDO such as the ADP7104 rather than directly from a switching regulator. Decouple AVDD and DVDD separately with 10 uF bulk plus 100 nF ceramic capacitors placed within 5 mm of the supply pins. Use a star-ground topology with the LFCSP exposed thermal pad (EPAD) soldered to a continuous analog ground plane to minimize ground bounce in the simultaneous-sampling path.
Route the differential analog input pairs (VA0-VA3 and VB0-VB3) as 50 ohm-matched symmetric pairs with guard traces tied to AGND, kept short and routed directly to the shunt or preamp outputs. Keep digital lines (SCLK, SDOA, SDOB, SDI, CS) away from the analog inputs and over the digital ground plane only. Place the external voltage reference (e.g., ADR435) close to the VREF_A / VREF_B pins and decouple its output with a 10 uF tantalum plus 100 nF ceramic capacitor to REFGND.
The simultaneous-sampling architecture of the AD7266BCPZ-REEL relies on matched track-and-hold bandwidth on both ADCs; any impedance mismatch in the analog input path introduces inter-channel gain or phase error. Use identical RC anti-alias filters (typically 1 kohm + 470 pF for 2 MSPS) on every VAx / VBx input, with the filter capacitor common-mode return tied to AGND at the IC pin. Maintain the input common-mode voltage within the datasheet range to avoid code distortion.
Do not leave the unused analog input channels floating; tie any unused VAx or VBx pin to mid-supply (AVDD/2) through a 1 kohm resistor to prevent ESD diode conduction and noise pickup. Verify CS is held low only during the active conversion period; leaving CS low continuously disables the SDOA/SDOB bus and may cause bus contention with other SPI peripherals. Always issue a dummy conversion after power-up to flush the digital interface state machine before valid data sampling.
Información de cumplimiento
RoHS and REACH compliant per ADI product page; not AEC-Q100 qualified (industrial/consumer grade). Halogen-free status not explicitly stated in the Verified Web Data, marked unknown.
