My Inquiry
My Account
Analog Devices Inc. AD7476ABRMZ-REEL
- Part No.:
- AD7476ABRMZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7476ABRMZ-REEL.pdf
- Description:
- IC ADC 12BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7476ABRMZ-REEL from Analog Devices is a 12-bit, single-channel, successive-approximation ADC with 1 MSPS throughput, operating from 2.35 V to 5.25 V supply and housed in a 6-lead SC70 package. It features 71 dB SNR at 100 kHz input, no pipeline delay, and SPI/QSPI/MICROWIRE/DSP-compatible serial interface - enabling high-fidelity data acquisition in space-constrained battery-powered medical sensors and portable instrumentation.
For engineers reviewing the AD7476ABRMZ-REEL datasheet, AD7476ABRMZ-REEL pinout, AD7476ABRMZ-REEL application, or AD7476ABRMZ-REEL equivalent, key selection considerations include its 12-bit resolution with ±1.5 LSB INL (B grade), 800 ns max conversion time, 1 µA standby current, and internal VDD-referenced analog input range (0 V to VDD).
Technical Context
The AD7476ABRMZ-REEL implements a standard successive-approximation register (SAR) architecture with integrated track-and-hold, sampling on the falling edge of CS and initiating conversion simultaneously. Its reference is derived directly from VDD, eliminating external reference components and fixing the full-scale input range to 0 V to VDD.
Timing is fully controlled by the external SCLK: conversion requires exactly 16 SCLK cycles, with no latency between sample initiation and result availability. The device supports flexible power management via a dedicated CS-controlled power-down mode, achieving ≤1 µA quiescent current while retaining fast wake-up (1 µs power-up time).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 1 LSB = VDD/4096 quantization step for precise low-voltage signal digitization |
| Throughput Rate | 1 MSPS - supports real-time sampling of signals up to ~400 kHz Nyquist bandwidth |
| SNR @ 100 kHz | 71 dB min - enables ≥11.5 effective number of bits (ENOB) for clean sensor signal capture |
| INL (B Grade) | ±1.5 LSB max - ensures monotonicity and <0.037% full-scale linearity error across temperature |
| Supply Range | 2.35 V to 5.25 V - interoperable with 2.5 V, 3.3 V, and 5 V logic/system rails without level-shifting |
| Standby Current | 1 µA max - extends battery life in intermittent-sampling applications such as wearable health monitors |
| Conversion Time | 800 ns max - deterministic 16-SCLK cycle timing simplifies timing budgeting in microcontroller interfaces |
Pinout & Package
AD7476ABRMZ-REEL is packaged in a 6-lead SC70 (small outline transistor) surface-mount package measuring 2.0 mm × 1.25 mm × 0.9 mm, optimized for ultra-compact PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Single 2.35–5.25 V rail powers analog core, digital interface, and internal reference - no separate AVDD/DVDD required |
| 2 - GND | Analog ground reference | Common return for all analog circuitry; must be connected to low-impedance system AGND plane to maintain 71 dB SNR |
| 3 - VIN | Analog input channel | Single-ended input with 0 V to VDD range and 20 pF input capacitance - requires external RC anti-alias filter for >13 MHz full-power bandwidth |
| 4 - CS | Chip select / conversion trigger | Active-low signal that initiates sampling on falling edge and frames serial data output - enables multi-device SPI daisy-chaining |
| 5 - SDATA | Serial data output | Three-state CMOS output delivering 4 leading zeros + 12-bit MSB-first result - compatible with 3.3 V and 5 V microcontroller inputs |
| 6 - SCLK | Serial clock input | Asynchronous clock driving both conversion timing (16 cycles) and data shift-out - supports up to 20 MHz for minimal 50 ns SCLK pulse widths |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Deterministic 16-SCLK conversion with immediate result availability - eliminates latency uncertainty in closed-loop control systems |
| VDD-referenced ADC | Eliminates need for external voltage reference or reference buffer - reduces BOM count and layout area in cost-sensitive designs |
| SC70 package | Smallest available footprint among 12-bit 1 MSPS SAR ADCs - enables placement directly adjacent to sensors in wearables and IoT nodes |
| SPI/QSPI/MICROWIRE compatibility | Direct interface to ARM Cortex-M, TI C2000, and ADI SHARC DSPs without protocol translation logic or firmware overhead |
| 1 µA power-down mode | Reduces average system power by >99% during idle periods - critical for multi-year battery operation in remote data loggers |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry analog signals in handheld diagnostic devices with 3.3 V Li-ion supply. IC Role / Device Role / Timing Role: Primary 12-bit SAR ADC performing single-ended sampling at 1 MSPS with internal VDD reference and SPI output to MCU. Use Value: 71 dB SNR preserves small-signal fidelity; 1 µA standby current extends 2-week battery life between sync uploads. |
Use Scenario: Intermittent environmental monitoring (temperature, humidity, light) in solar-powered field nodes. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated every 10 seconds to digitize sensor outputs before MCU enters deep sleep. Use Value: SC70 footprint minimizes PCB area; deterministic 800 ns conversion enables precise wake-up timing and minimal active energy per sample. |
| Industrial Handheld Testers | Optical Sensor Interfaces |
Use Scenario: Digitizing analog outputs from multimeter front-end circuits operating from dual 3.3 V/5 V rails. IC Role / Device Role / Timing Role: High-speed, rail-to-rail input ADC interfacing to precision op-amp buffers and ARM-based display controllers. Use Value: ±1.5 LSB INL ensures accurate DC measurement accuracy; 2.35–5.25 V supply range accommodates both logic domains without regulators. |
Use Scenario: Converting photodiode current outputs in compact optical encoders or ambient light sensors. IC Role / Device Role / Timing Role: Single-supply ADC accepting 0–3.3 V analog inputs from transimpedance amplifiers, synchronized via CS-triggered sampling. Use Value: 13.5 MHz full-power bandwidth captures fast optical transients; 20 pF input capacitance allows direct connection to low-output-impedance TIA stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200 kSPS max, 3 V only, 8-pin SOIC | Limited to lower-precision, lower-speed applications; lacks SC70 option and VDD reference flexibility | Select only when 8-bit resolution suffices and board space permits larger SOIC package |
| MAX1116EUA+ | 12-bit, 1 MSPS, but requires external reference; 8-pin µMAX package (3.0 × 3.0 mm) | Higher BOM cost and layout complexity due to reference IC and decoupling; 50% larger footprint than SC70 | Prefer AD7476ABRMZ-REEL where VDD referencing and minimal size are critical |
Compared with ADS7822U and MAX1116EUA+, AD7476ABRMZ-REEL uniquely combines 12-bit accuracy, 1 MSPS speed, VDD-referenced operation, and SC70 packaging - making it optimal for miniaturized, battery-efficient systems requiring no external reference or level-shifting.
Availability
AD7476ABRMZ-REEL is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial handheld testers requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AD7476ABRMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7476A/AD7477A/AD7478A family was designed specifically for space- and power-constrained applications demanding high-speed, high-resolution data acquisition without external references - targeting portable instrumentation, medical devices, and industrial sensing.
FAQ
What is the maximum sampling rate supported by the AD7476ABRMZ-REEL?
The AD7476ABRMZ-REEL supports a maximum throughput rate of 1 MSPS, achieved with a 20 MHz SCLK and 16-cycle conversion timing. At this rate, the device delivers 12-bit results every 1 µs, with guaranteed performance across its full −40°C to +85°C operating range and 2.35 V to 5.25 V supply range.
Does the AD7476ABRMZ-REEL require an external voltage reference?
No, the AD7476ABRMZ-REEL uses an internal reference derived from VDD, establishing a 0 V to VDD analog input range. This eliminates the need for external reference ICs or buffers, reducing component count, PCB area, and design complexity - a key advantage over alternatives like the MAX1116EUA+.
What package type is used for the AD7476ABRMZ-REEL?
The AD7476ABRMZ-REEL is supplied in a 6-lead SC70 package (2.0 mm × 1.25 mm × 0.9 mm), the smallest standardized surface-mount package available for a 12-bit 1 MSPS SAR ADC. This enables ultra-dense layouts in wearables, handheld instruments, and space-limited sensor modules.
How does the AD7476ABRMZ-REEL manage power in low-duty-cycle applications?
The AD7476ABRMZ-REEL features a dedicated power-down mode activated via CS, drawing ≤1 µA typical current. With a 1 µs wake-up time, it supports burst-mode acquisition - ideal for battery-powered data loggers that sample once per minute and otherwise remain in ultra-low-power sleep.
Is the AD7476ABRMZ-REEL compatible with standard SPI microcontrollers?
Yes, the AD7476ABRMZ-REEL provides SPI/QSPI/MICROWIRE/DSP-compatible serial interface: data is clocked out MSB-first on SDATA on the falling edge of SCLK, with CS framing each conversion. It operates natively with 3.3 V and 5 V logic levels and requires no protocol translation hardware or firmware abstraction layers.
AD7476ABRMZ-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:
- 12
- Sampling Rate (Per Second):
- 1M
- 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 ~ 5.25V
- Voltage - Supply, Digital:
- 2.35V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7476ABRMZ-REEL FAQ
1.How can I place an order for AD7476ABRMZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7476ABRMZ-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 AD7476ABRMZ-REEL reliable?
The price and inventory of AD7476ABRMZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7476ABRMZ-REEL is usually 5 days.
3.What payment methods are accepted for AD7476ABRMZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7476ABRMZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7476ABRMZ-REEL?
AD7476ABRMZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7476ABRMZ-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 AD7476ABRMZ-REEL?
For technical support, including AD7476ABRMZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7476ABRMZ-REEL requirements.
6.How does Aetrix verify that AD7476ABRMZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD7476ABRMZ-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 AD7476ABRMZ-REEL meets industry standards.
7.What is the process for return or replacement of AD7476ABRMZ-REEL?
All AD7476ABRMZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7476ABRMZ-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 AD7476ABRMZ-REEL part is unused and in its original packaging.
Return procedure for AD7476ABRMZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7476ABRMZ-REEL Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
