My Inquiry
My Account
Analog Devices Inc. AD7475BR-REEL
- Part No.:
- AD7475BR-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7475BR-REEL.pdf
- Description:
- IC ADC 12BIT SRL LP 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7475BR-REEL from Analog Devices is a 12-bit, 1 MSPS successive-approximation ADC operating from a single 2.7 V to 5.25 V supply, featuring an external 2.5 V reference input (REF IN), no pipeline delay, and SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface. It delivers 68 dB SINAD at 300 kHz input frequency and consumes only 4.5 mW at 3 V/1 MSPS, targeting precision data acquisition in space-constrained, battery-powered instrumentation.
For engineers reviewing the AD7475BR-REEL datasheet, AD7475BR-REEL pinout, AD7475BR-REEL application, or AD7475BR-REEL equivalent, key selection criteria include its 12-bit resolution with ±1 LSB max DNL, 800 ns conversion time, VDRIVE logic-level independence, 1 µA full shutdown current, and 8-lead MSOP package compatibility with SOIC footprints.
Technical Context
The AD7475BR-REEL implements a capacitive DAC-based successive-approximation architecture with a track-and-hold amplifier supporting >1 MHz input bandwidth. Conversion is initiated on the falling edge of CS and clocked by SCLK, requiring exactly 16 cycles at up to 20 MHz for full 12-bit result output.
It uses straight binary coding with LSB = VREF/4096, supports 0 V to 2.5 V analog input range via external REF IN, and features dual power domains: VDD (2.7–5.25 V) for core analog/digital operation and VDRIVE (2.7–5.25 V) for independent logic interface voltage setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete output codes over full-scale range |
| Throughput Rate | 1 MSPS maximum - enables real-time sampling of signals up to ~500 kHz Nyquist bandwidth |
| SINAD | 68 dB min at 300 kHz - ensures ≥11.3 effective bits for high-fidelity signal capture |
| Power Dissipation | 4.5 mW max at 3 V/1 MSPS - enables continuous high-speed operation in thermally constrained portable systems |
| Conversion Time | 800 ns max - fixed 16-SCLK-cycle latency with no pipeline delay or sample-to-result uncertainty |
| Shutdown Current | 1 µA max - reduces system standby power to negligible levels between acquisition bursts |
| Reference Input | 2.5 V ±1% required at REF IN - mandates stable external reference for specified DC accuracy |
Pinout & Package
AD7475BR-REEL is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm × 1.1 mm), pin-compatible with 8-lead SOIC and suitable for high-density PCB layouts. Thermal impedance θJA is 205.9°C/W, supporting operation up to +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF IN | External reference voltage input | Accepts 2.5 V ±1% reference; requires ≥0.1 µF decoupling capacitor for noise immunity and stability |
| 2 - VIN | Analog input channel | Single-ended input with 0 V to REF IN range; 20 pF input capacitance necessitates careful driver design |
| 3 - GND | Analog ground reference | Common return for analog circuitry; must be tied to clean analog ground plane, separate from digital ground |
| 4 - SCLK | Serial clock input | Drives both data transfer and internal conversion timing; supports 10 kHz–20 MHz frequency range |
| 5 - SDATA | Serial data output | MSB-first 12-bit result preceded by four leading zeros; three-state controlled by CS |
| 6 - VDRIVE | Digital I/O power supply | Sets logic thresholds independently of VDD-enables direct interfacing to 3 V or 5 V microcontrollers |
| 7 - CS | Active-low chip select | Initiates conversion on falling edge; frames serial data transfer and controls SDATA three-state behavior |
| 8 - VDD | Analog/digital core supply | 2.7 V–5.25 V single supply powers internal circuitry; 1.5 mA typical current draw at 3 V/1 MSPS |
Key Features
| Feature | Design Value |
|---|---|
| VDRIVE logic independence | Allows serial interface to operate at 3 V while VDD runs at 5 V-eliminates level-shifter components in mixed-voltage systems |
| No pipeline delay | Guarantees deterministic 800 ns conversion latency from CS falling edge to valid SDATA-critical for time-critical control loops |
| Flexible power management | Three operating modes (normal/partial/full power-down) enable dynamic power scaling; full shutdown draws only 1 µA |
| Wide supply range | 2.7 V–5.25 V operation supports both Li-ion battery (3.0–3.6 V) and legacy 5 V industrial rails without redesign |
| High input bandwidth | 8.3 MHz full-power bandwidth @ 3 dB enables accurate digitization of fast transients and RF-modulated sensor outputs |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
|
Use Scenario: Continuous acquisition of ECG or pulse oximetry signals in handheld diagnostic devices powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary analog front-end ADC converting conditioned biopotential signals at 1 MSPS with minimal power overhead. Use Value: 4.5 mW consumption at 3 V extends battery life beyond 24 hours; 68 dB SINAD preserves clinical-grade signal fidelity. |
Use Scenario: Multi-channel voltage/current monitoring in DIN-rail-mounted condition-monitoring units deployed in factory environments. IC Role / Device Role / Timing Role: High-accuracy, low-drift sampling node interfaced to isolated analog inputs and ARM Cortex-M microcontrollers. Use Value: External 2.5 V reference support enables traceable calibration; 1 µA shutdown current minimizes self-heating during idle periods. |
| Optical Sensor Interfaces | Wireless Sensor Nodes |
|
Use Scenario: Digitizing photodiode or pyroelectric detector outputs in compact optical smoke detectors or IR thermometers. IC Role / Device Role / Timing Role: Low-noise, wide-bandwidth ADC capturing fast-rising optical pulses with precise timing alignment. Use Value: 8.3 MHz full-power bandwidth captures sub-microsecond light pulses; 20 pF input capacitance simplifies op-amp drive requirements. |
Use Scenario: Battery-operated environmental sensors (temperature/humidity/pressure) transmitting data via BLE or LoRaWAN. IC Role / Device Role / Timing Role: Energy-efficient sampling engine synchronized to ultra-low-power MCU wake-up cycles. Use Value: Full power-down mode reduces quiescent current to 1 µA-extending 10-year battery life in maintenance-free deployments. |
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 |
|---|---|---|---|
| AD7476BRMZ-REEL | Same 12-bit SAR architecture but rated for 1.25 MSPS; higher THD (−70 dB vs −75 dB) and slightly higher power (5.2 mW @ 3 V) | Better suited for oversampled systems needing marginally faster throughput; less optimal for strict 1 MSPS/4.5 mW constraints | Select AD7476BRMZ-REEL only if >1 MSPS headroom is required and THD degradation is acceptable |
| ADS7822U | 12-bit, 250 kSPS max; lower power (1.2 mW @ 3 V) but 4× slower; uses internal reference only-no external REF IN option | Targeted at ultra-low-power, low-throughput sensor nodes where speed is secondary to energy per sample | Choose ADS7822U when average sampling rate <200 kSPS and external reference flexibility is unnecessary |
Compared with AD7475BR-REEL, AD7476BRMZ-REEL trades minor power increase for throughput headroom, while ADS7822U sacrifices speed and reference flexibility to achieve sub-mW operation-making AD7475BR-REEL the optimal balance of speed, power, and design flexibility for 1 MSPS battery-powered systems.
Availability
AD7475BR-REEL is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable data acquisition systems, and optical sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for AD7475BR-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 AD7475BR-REEL belongs to Analog Devices' precision SAR ADC product line, engineered for high-speed, low-power data acquisition in size- and energy-constrained embedded systems where accuracy, timing determinism, and supply flexibility are critical.
FAQ
What is the reference voltage requirement for AD7475BR-REEL?
The AD7475BR-REEL requires an external 2.5 V reference applied to the REF IN pin, with ±1% tolerance for specified performance. A minimum 0.1 µF decoupling capacitor must be placed directly at the REF IN pin to ensure stability and noise rejection. Unlike the AD7495, the AD7475BR-REEL does not include an internal reference, so system-level reference accuracy depends entirely on the external source quality and layout.
Does AD7475BR-REEL support true 1 MSPS continuous sampling?
Yes, AD7475BR-REEL achieves a guaranteed 1 MSPS throughput rate under specified conditions: VDD = 2.7–5.25 V, fSCLK = 20 MHz, and proper timing margins met. Each conversion completes in 800 ns (16 SCLK cycles), and the minimum quiet time (tQUIET) between conversions is 100 ns-enabling sustained 1 MSPS operation without pipeline stalls or data loss.
Can AD7475BR-REEL interface directly with a 3 V microcontroller while powered from 5 V?
Yes, AD7475BR-REEL supports this configuration via its dedicated VDRIVE pin. When VDRIVE = 3 V and VDD = 5 V, the digital interface (CS, SCLK, SDATA) operates at 3 V logic levels while the analog core runs at 5 V-enabling direct connection to 3 V MCUs without level shifters, while maintaining higher SNR from the elevated analog supply.
What is the meaning of "no pipeline delay" in AD7475BR-REEL specifications?
"No pipeline delay" means AD7475BR-REEL is a true successive-approximation ADC with deterministic, single-cycle latency: the 12-bit result corresponds precisely to the analog input sampled at the falling edge of CS, with no intermediate stored samples or delayed outputs. This eliminates timing uncertainty in closed-loop systems and guarantees sample-to-result alignment within 800 ns.
How does the power-down mode function in AD7475BR-REEL?
AD7475BR-REEL offers three power states: normal (1.5 mA @ 3 V), partial power-down (100 µA static), and full power-down (1 µA max). Full shutdown is entered by holding CS high while SCLK is inactive; recovery time is 20 µs. This allows rapid wake-up between acquisitions-ideal for duty-cycled sensor systems where average power must be minimized without sacrificing peak performance.
AD7475BR-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- SPI, DSP
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7475BR-REEL FAQ
1.How can I place an order for AD7475BR-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7475BR-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 AD7475BR-REEL reliable?
The price and inventory of AD7475BR-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7475BR-REEL is usually 5 days.
3.What payment methods are accepted for AD7475BR-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7475BR-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7475BR-REEL?
AD7475BR-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7475BR-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 AD7475BR-REEL?
For technical support, including AD7475BR-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7475BR-REEL requirements.
6.How does Aetrix verify that AD7475BR-REEL is sourced from the original manufacturer or authorized distributors?
All AD7475BR-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 AD7475BR-REEL meets industry standards.
7.What is the process for return or replacement of AD7475BR-REEL?
All AD7475BR-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7475BR-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 AD7475BR-REEL part is unused and in its original packaging.
Return procedure for AD7475BR-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7475BR-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…
