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Analog Devices Inc. AD7262BCPZ-RL7
- Part No.:
- AD7262BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD7262BCPZ-RL7.pdf
- Description:
- IC ADC 12BIT SAR 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,669
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Product details
Overview
AD7262BCPZ-RL7 from Analog Devices is a dual-channel, 12-bit, simultaneous-sampling SAR ADC with integrated PGA (×1 to ×128), on-chip 2.5 V reference, and four comparators-designed for high-precision motor control feedback and sensor monitoring. It delivers 1 MSPS throughput per channel, 73 dB SNR at gain = 2, and true differential analog inputs with >1 GΩ input impedance.
For engineers reviewing the AD7262BCPZ-RL7 datasheet, AD7262BCPZ-RL7 pinout, AD7262BCPZ-RL7 application, or AD7262BCPZ-RL7 equivalent, this page provides verified specifications, validated pin functions, real-world motor encoder and current sensing use cases, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The AD7262BCPZ-RL7 implements two independent successive approximation register (SAR) ADCs sharing a common serial interface, each preceded by a programmable-gain amplifier with 14 discrete gain settings. Its dual-track-and-hold architecture enables true simultaneous sampling of VA± and VB± inputs, critical for phase-matched acquisition in servo systems.
Four on-chip comparators are partitioned into two low-power pairs (A/B) and two fast-propagation pairs (C/D), each with dedicated supply domains (CA_CBVCC and CC_CDVCC) and ground references. Calibration logic supports both device offset correction and system-level gain compensation via programmable registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic output and no missing codes across full operating range. |
| Throughput Rate | 1 MSPS per ADC - enables real-time capture of fast-changing motor position or current waveforms. |
| PGA Gain Range | ×1 to ×128 in 14 steps - supports direct digitization of mV-level encoder sine/cosine signals without external amplification. |
| SNR | 73 dB typical at gain = 2 - ensures high-fidelity signal reconstruction for closed-loop control algorithms. |
| Input Impedance | >1 GΩ - minimizes loading on high-impedance sensor sources such as resolvers or LVDTs. |
| Reference | On-chip 2.5 V ±5 mV - eliminates need for external reference IC unless higher accuracy or temperature stability is required. |
| Comparator Propagation Delay | 0.12 µs (C/D) / 0.93 µs (A/B) at 5 V - allows precise zero-crossing detection for commutation timing in BLDC drives. |
Pinout & Package
AD7262BCPZ-RL7 uses a 48-lead LFCSP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal paddle requiring solder connection to PCB ground. Pin numbering follows standard top-view orientation with Pin 1 indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VA+, VA− | Analog Input A | True differential input pair for first ADC channel; accepts ±VREF/2 centered at common-mode voltage. |
| VB+, VB− | Analog Input B | True differential input pair for second ADC channel; enables simultaneous sampling with VA±. |
| DOUTA, DOUTB | Serial Data Output | Independent MSB-first twos-complement outputs; allow concurrent readout or time-multiplexed access via single port. |
| CA+, CA−, CB+, CB− | Comparator A/B Inputs | Low-power comparator inputs referenced to CA_CB_GND; optimized for continuous monitoring with minimal current draw. |
| CC+, CC−, CD+, CD− | Comparator C/D Inputs | High-speed comparator inputs referenced to CC_CD_GND; support sub-0.2 µs edge detection for timing-critical events. |
| G0–G3 | Gain Selection | Hardware-programmable gain control pins; set PGA gain independently for both channels when not using SPI register mode. |
| CAL | Calibration Trigger | Active-high pulse initiates internal offset calibration sequence; completes within 2 µs after CS assertion. |
| REFSEL | Reference Source Select | Logic-high selects internal 2.5 V reference; logic-low enables external reference injection via VREFA/VREFB. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Eliminates inter-channel skew in multi-axis motor control, enabling accurate vector calculation without interpolation. |
| Programmable gain amplifier (×1–×128) | Reduces external signal conditioning components and PCB area while maintaining 12-bit ENOB across wide dynamic range. |
| Four integrated comparators | Provides hardware-based zero-crossing detection and pole counting without CPU intervention-critical for deterministic commutation. |
| On-chip 2.5 V reference | Delivers stable reference with 20 ppm/°C drift and 20 µV rms noise, suitable for precision position feedback applications. |
| Internal offset and system gain calibration | Compensates for sensor offset and gain errors in real time, improving end-to-end accuracy without manual trimming. |
Applications
| Motor Position Feedback | Current Sensing |
|---|---|
|
Use Scenario: Digitizing sine/cosine outputs from analog resolvers or encoders in servo drives. IC Role / Device Role / Timing Role: Dual ADC simultaneously samples resolver outputs to compute absolute angular position via arctangent algorithm. Use Value: Simultaneous sampling preserves phase relationship between sine and cosine channels, eliminating angle error due to time skew. |
Use Scenario: Measuring phase currents in three-phase inverter legs using shunt resistors. IC Role / Device Role / Timing Role: Two ADC channels acquire current samples at identical instants for field-oriented control (FOC) loop execution. Use Value: 1 MSPS throughput and <400 ns acquisition time enable precise current reconstruction at PWM switching frequencies up to 20 kHz. |
| Pole Counting & Commutation | Sensor Signal Conditioning |
|
Use Scenario: Detecting magnetic pole transitions in BLDC motors using Hall-effect or back-EMF sensors. IC Role / Device Role / Timing Role: Comparator C/D provide fast, low-jitter digital edges synchronized to analog inputs for hardware-triggered interrupt generation. Use Value: 0.12 µs propagation delay at 5 V ensures commutation timing accuracy within ±1 electrical degree at 10,000 RPM. |
Use Scenario: Converting low-amplitude thermocouple or strain gauge outputs in industrial instrumentation. IC Role / Device Role / Timing Role: PGA amplifies µV–mV signals before digitization; internal reference ensures consistent scaling across temperature. Use Value: 14 gain options and post-calibration linearity (<±1 LSB INL) eliminate need for external instrumentation amplifiers or calibration tables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC with PGA applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7265BCPZ-RL7 | Same 48-lead LFCSP package, but 14-bit resolution and 1 MSPS per channel; includes additional comparator and higher SNR (78 dB). | Better suited for high-accuracy torque control where 12-bit quantization noise limits loop bandwidth. | Select when ENOB > 11.5 bits is required and layout compatibility with AD7262BCPZ-RL7 is prioritized. |
| ADS8684IPWR | 16-bit, 500 kSPS, single-supply (5 V), integrated reference and PGA-but no comparators and only sequential (not simultaneous) sampling. | Lacks hardware comparators and true simultaneous sampling; requires external timing coordination for dual-channel acquisition. | Choose when higher resolution outweighs need for real-time phase matching and comparator integration. |
Compared with AD7262BCPZ-RL7, AD7265BCPZ-RL7 offers higher resolution and SNR in identical packaging, while ADS8684IPWR trades simultaneity and comparators for increased bit depth-making AD7262BCPZ-RL7 optimal for cost-sensitive, timing-critical motor control where 12-bit fidelity suffices.
Availability
AD7262BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control systems, industrial encoder interfaces, and precision current sensing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7262BCPZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD7262 product line targets high-accuracy, real-time data acquisition in motion control and sensor interfacing-emphasizing simultaneous sampling, integrated signal conditioning, and deterministic timing for closed-loop systems.
FAQ
What is the maximum sampling rate supported by AD7262BCPZ-RL7?
AD7262BCPZ-RL7 supports a maximum throughput rate of 1 MSPS per ADC channel. This is achieved with a 40 MHz SCLK and requires 19 clock cycles for conversion plus 12 for data readout. The dual-channel architecture maintains this rate for both channels simultaneously, making AD7262BCPZ-RL7 suitable for high-speed position and current feedback loops in servo drives.
Does AD7262BCPZ-RL7 include an internal voltage reference?
Yes, AD7262BCPZ-RL7 integrates a 2.5 V reference with ±5 mV initial accuracy and 20 ppm/°C temperature coefficient. It can be enabled via the REFSEL pin and is buffered for low-noise operation. The reference may be disabled to use an external source applied to VREFA/VREFB, allowing system-level reference sharing or improved stability.
How many gain settings does the PGA in AD7262BCPZ-RL7 support?
The programmable gain amplifier in AD7262BCPZ-RL7 supports 14 discrete gain settings: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128. These are selected either via hardware pins G0–G3 or through the SPI control register, enabling flexible signal scaling without external op-amps.
Can AD7262BCPZ-RL7 perform simultaneous sampling on both channels?
Yes, AD7262BCPZ-RL7 features true simultaneous sampling using dual track-and-hold circuits-one per ADC channel. This ensures zero inter-channel skew between VA± and VB± acquisitions, which is essential for accurate angle computation in resolver-based motor control and phase-current measurement in inverters.
What are the power supply requirements for AD7262BCPZ-RL7?
AD7262BCPZ-RL7 requires three independent supplies: AVCC (4.75–5.25 V) for analog circuitry, VDRIVE (2.7–5.25 V) for digital I/O levels, and separate comparator supplies CA_CBVCC and CC_CDVCC (2.7–5.25 V). Each supply must be decoupled locally; total active current is 31.5 mA at 5.25 V, dropping to 1 µA in shutdown mode.
AD7262BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI, DSP
- Configuration:
- PGA-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- PGA, Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7262BCPZ-RL7 FAQ
1.How can I place an order for AD7262BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7262BCPZ-RL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7262BCPZ-RL7 reliable?
The price and inventory of AD7262BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7262BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7262BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7262BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7262BCPZ-RL7?
AD7262BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7262BCPZ-RL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7262BCPZ-RL7?
For technical support, including AD7262BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7262BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7262BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7262BCPZ-RL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7262BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7262BCPZ-RL7?
All AD7262BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7262BCPZ-RL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7262BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7262BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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