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Analog Devices Inc. AD7277BRMZ-REEL
- Part No.:
- AD7277BRMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7277BRMZ-REEL.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,793
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Product details
Overview
AD7277BRMZ-REEL from Analog Devices is a 10-bit, 3.45 MSPS successive approximation ADC in a 6-lead TSOT package, operating from 2.35 V to 3.6 V. It delivers 60.5 dB SINAD at 1 MHz input, 74 MHz full-power bandwidth, and 0.1 μA typical power-down current-enabling high-speed data acquisition in space-constrained industrial sensor interfaces and portable instrumentation.
For engineers reviewing the AD7277BRMZ-REEL datasheet, AD7277BRMZ-REEL pinout, AD7277BRMZ-REEL application, or AD7277BRMZ-REEL equivalent, key selection factors include its 10-bit resolution with guaranteed no missing codes, SPI/QSPI/MICROWIRE-compatible serial interface, internal VDD-referenced analog input range (0 to VDD), and −40°C to +125°C operation for harsh-environment embedded systems.
Technical Context
The AD7277BRMZ-REEL implements a standard SAR architecture with no pipeline delay, using CS to initiate sampling on its falling edge and SCLK to clock out 12-bit serial frames (two leading zeros + 10 data bits + four trailing zeros, MSB-first). Its track-and-hold amplifier supports ≥74 MHz full-power bandwidth and acquires within 60 ns.
Conversion timing is fully synchronous to SCLK: 12 cycles at up to 48 MHz yield 3.45 MSPS throughput; power management includes partial and full power-down modes with 34 μA and 0.1 μA typical quiescent currents respectively. Reference is derived internally from VDD, eliminating external reference components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - guarantees monotonicity and no missing codes across full temperature range. |
| Throughput Rate | 3.45 MSPS maximum - enables real-time sampling of signals up to ~1.7 MHz Nyquist bandwidth. |
| SINAD | 60.5 dB min at 1 MHz input - defines usable dynamic range for medium-fidelity signal digitization. |
| Power Consumption | 10.5 mW typical at 3 V / 3 MSPS - balances speed and energy efficiency in battery-powered systems. |
| Analog Input Range | 0 V to VDD - simplifies front-end design by eliminating level-shifting for single-supply sensors. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, motor control, and industrial PLC applications. |
| Power-Down Current | 0.1 μA typical - enables ultra-low standby power in duty-cycled measurement systems. |
Pinout & Package
AD7277BRMZ-REEL uses a 6-lead TSOT package (2.9 mm × 1.6 mm × 0.8 mm) with wettable flank terminations for automated optical inspection. Pin 1 is VDD; pin 2 is GND; pin 3 is single-ended analog input (VIN); pin 4 is serial clock (SCLK); pin 5 is serial data output (SDATA); pin 6 is active-low chip select (CS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Supplies both analog and digital circuitry; also serves as internal reference source (0–VDD input range). |
| GND (Pin 2) | Analog ground reference | Common return for VIN, internal T/H, and reference; must be low-impedance and separated from digital ground where possible. |
| VIN (Pin 3) | Analog input channel | Single-ended input accepting 0 V to VDD; 42 pF input capacitance in track mode requires careful driver impedance matching. |
| SCLK (Pin 4) | Serial clock input | Controls conversion timing and data readout; accepts up to 48 MHz; determines throughput rate directly. |
| SDATA (Pin 5) | Serial data output | Three-state CMOS output; provides 12-bit frame (2 leading zeros + 10 data bits + 4 trailing zeros) MSB-first on SCLK falling edges. |
| CS (Pin 6) | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data transfer; no minimum pulse width beyond 3 ns. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic latency: conversion completes within 250 ns after CS fall, enabling precise time-critical sampling control. |
| VDD-referenced input | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area in compact sensor nodes. |
| SPI/QSPI/MICROWIRE compatibility | Interoperates with common microcontroller peripherals without protocol translation, accelerating firmware integration. |
| 74 MHz full-power bandwidth | Supports accurate digitization of wideband signals (e.g., ultrasonic transducer outputs, motor phase currents) without external anti-alias filtering. |
| −40°C to +125°C operation | Rated for extended temperature environments including automotive engine compartments and industrial motor drives. |
Applications
| Industrial Sensor Interface | Portable Instrumentation |
|---|---|
|
Use Scenario: Digitizing outputs from RTDs, thermocouples, and strain gauges in programmable logic controllers and distributed I/O modules. IC Role / Device Role / Timing Role: High-speed, low-latency ADC capturing transient thermal or mechanical events with minimal system-level buffering. Use Value: 10-bit resolution with ±0.5 LSB INL and guaranteed no missing codes ensures accurate calibration traceability across temperature extremes. |
Use Scenario: Battery-powered handheld meters measuring voltage, current, and resistance in field service tools. IC Role / Device Role / Timing Role: Low-power data converter enabling >10-hour runtime via 0.1 μA power-down mode between measurements. Use Value: 10.5 mW typical active power at 3 MSPS extends battery life while maintaining sufficient SNR for 4½-digit display accuracy. |
| Motor Control Feedback | Automotive Onboard Diagnostics |
|
Use Scenario: Sampling phase currents and DC bus voltage in BLDC motor inverters for closed-loop torque and speed regulation. IC Role / Device Role / Timing Role: High-bandwidth ADC synchronizing with PWM switching cycles to capture current ripple and fault transients. Use Value: 74 MHz full-power bandwidth captures fast current spikes during switching transitions without distortion or aliasing. |
Use Scenario: Monitoring battery voltage, cabin temperature, and exhaust gas sensor signals in vehicle ECU subsystems. IC Role / Device Role / Timing Role: AEC-Q100 stress-tested ADC providing reliable analog sensing in high-vibration, high-temperature engine bays. Use Value: −40°C to +125°C operation and 0.1 μA power-down current meet stringent automotive low-power and reliability requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7477ARMZ | Same 10-bit resolution and 3 MSPS throughput, but in 8-lead MSOP; requires external reference; higher 12.5 mW power at 3 V. | Larger footprint; less suitable for ultra-compact layouts where 6-lead TSOT is critical. | Select when board space allows MSOP and external reference flexibility is needed for ratiometric or precision scaling. |
| ADS7822U | 12-bit resolution, 200 kSPS max, SPI interface, 2.7–5.25 V supply; no internal reference; 1.25 mW at 200 kSPS. | Lower speed and higher resolution; optimized for precision over speed; incompatible pinout and timing model. | Select for low-speed, high-accuracy applications like medical sensor front-ends where 12-bit linearity outweighs throughput needs. |
Compared with AD7277BRMZ-REEL, AD7477ARMZ offers identical performance in a larger package with external reference dependency, while ADS7822U trades speed for resolution and operates in a fundamentally different low-power, low-throughput regime-making AD7277BRMZ-REEL optimal for space-constrained, high-speed industrial sensing.
Availability
AD7277BRMZ-REEL is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation, motor control feedback, and automotive onboard diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7277BRMZ-REEL 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 AD7277BRMZ-REEL belongs to the AD727x family of high-speed, low-power SAR ADCs designed specifically for space- and power-constrained embedded systems demanding precision sampling without pipeline latency.
FAQ
What is the maximum sampling rate supported by the AD7277BRMZ-REEL?
The AD7277BRMZ-REEL achieves a maximum throughput rate of 3.45 MSPS when operated with a 48 MHz SCLK. This corresponds to a 12-cycle conversion time (250 ns max), and the device maintains specified AC performance-including 60.5 dB SINAD-at this rate with a 1 MHz input tone. Lower SCLK frequencies proportionally reduce throughput.
Does the AD7277BRMZ-REEL require an external voltage reference?
No, the AD7277BRMZ-REEL uses an internal reference derived from VDD, establishing a 0 V to VDD analog input range. This eliminates the need for external reference components, simplifying design and reducing bill-of-materials cost. The reference is not user-accessible or adjustable.
How does the AD7277BRMZ-REEL handle power management in low-duty-cycle applications?
The AD7277BRMZ-REEL supports two power-down modes: partial power-down (34 μA typical) and full power-down (0.1 μA typical at −40°C to +85°C). Full power-down retains register state and achieves sub-microamp quiescent current, making it ideal for wake-on-event architectures in battery-powered systems using the AD7277BRMZ-REEL.
What serial interface protocols is the AD7277BRMZ-REEL compatible with?
The AD7277BRMZ-REEL is compatible with SPI, QSPI, MICROWIRE, and generic DSP serial interfaces. Its SDATA output is three-state, driven on the falling edge of SCLK, and its CS input provides frame synchronization-ensuring interoperability with most microcontroller SPI peripherals without additional logic.
Is the AD7277BRMZ-REEL pin-compatible with other devices in the AD727x family?
Yes, the AD7277BRMZ-REEL shares identical pinout and package (6-lead TSOT) with AD7276BRMZ-REEL and AD7278BRMZ-REEL. This allows hardware reuse across 12-bit, 10-bit, and 8-bit variants-only firmware configuration and timing parameters need adjustment when migrating between resolutions in the same AD7277BRMZ-REEL footprint.
AD7277BRMZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 3M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 2.35V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7277BRMZ-REEL FAQ
1.How can I place an order for AD7277BRMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7277BRMZ-REEL 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 AD7277BRMZ-REEL reliable?
The price and inventory of AD7277BRMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7277BRMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7277BRMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7277BRMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7277BRMZ-REEL?
AD7277BRMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7277BRMZ-REEL 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 AD7277BRMZ-REEL?
For technical support, including AD7277BRMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7277BRMZ-REEL requirements.
6.How does Aetrix verify that AD7277BRMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7277BRMZ-REEL 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 AD7277BRMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7277BRMZ-REEL?
All AD7277BRMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7277BRMZ-REEL, 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 AD7277BRMZ-REEL part is unused and in its original packaging.
Return procedure for AD7277BRMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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