My Inquiry
My Account
Analog Devices Inc. AD7475BRZ-REEL7
- Part No.:
- AD7475BRZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD7475BRZ-REEL7.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,102
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7475BRZ-REEL7 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-sensitive systems.
For engineers reviewing the AD7475BRZ-REEL7 datasheet, AD7475BRZ-REEL7 pinout, AD7475BRZ-REEL7 application, or AD7475BRZ-REEL7 equivalent, key selection criteria include its 8-lead MSOP package, VDRIVE logic-level independence, 1 µA full shutdown current, 300 ns track-and-hold acquisition time, and guaranteed no-missed-codes performance with ±1 LSB DNL (B-grade).
Technical Context
The AD7475BRZ-REEL7 implements a capacitive DAC-based successive-approximation architecture with precise sampling controlled by the CS falling edge and conversion clocked by SCLK. Its track-and-hold amplifier supports full-power bandwidth up to 8.3 MHz (−3 dB) and handles input frequencies above 1 MHz without aliasing degradation.
It uses a straight binary output coding scheme with LSB = VREF/4096, supports flexible power management via partial and full power-down modes, and enables direct interfacing to 3 V or 5 V processors through the independent VDRIVE pin-decoupling logic voltage from analog supply (VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 discrete digital codes over full-scale range |
| Throughput Rate | 1 MSPS maximum - enables real-time sampling of signals up to ~400 kHz Nyquist bandwidth |
| SINAD | 68 dB min at fIN = 300 kHz - ensures ≥11.3 effective bits for high-fidelity signal capture |
| Power Dissipation | 4.5 mW max at 3 V/1 MSPS - supports extended battery life in portable instrumentation |
| Shutdown Current | 1 µA max - reduces system standby power to negligible levels between conversions |
| Integral Nonlinearity | ±1 LSB max (B grade) - guarantees monotonicity and accurate end-point linearity |
| Track-and-Hold Acquisition | 300 ns max (sine wave) - allows fast settling after sampling, critical for high-frequency inputs |
Pinout & Package
AD7475BRZ-REEL7 is housed in an 8-lead MSOP package (3.0 mm × 4.9 mm, 0.65 mm pitch), RoHS-compliant and tape-and-reel packaged per REEL7 ordering suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF IN | Reference Input | Accepts external 2.5 V ±1% reference; requires ≥0.1 µF decoupling capacitor for stable ADC accuracy |
| 2 - VIN | Analog Input | Single-ended input with 0 V to REF IN range; 20 pF input capacitance necessitates low-impedance driving source |
| 3 - GND | Analog Ground | Primary ground reference for analog circuitry; must be connected to clean analog ground plane to minimize noise coupling |
| 4 - SCLK | Serial Clock Input | Provides both interface clock and internal ADC conversion timing; supports up to 20 MHz for 1 MSPS operation |
| 5 - SDATA | Serial Data Output | 3-state output delivering 12-bit result MSB-first, preceded by four leading zeros; timing referenced to SCLK falling edge |
| 6 - VDRIVE | Logic Power Supply | Sets I/O voltage level independently of VDD; enables seamless interfacing with 3 V or 5 V microcontrollers without level shifters |
| 7 - CS | Chip Select (Active Low) | Initiates conversion on falling edge and frames serial data transfer; defines acquisition window start and data validity period |
| 8 - VDD | Analog/Digital Supply | Single 2.7 V–5.25 V supply powering core ADC, logic, and track-and-hold; 450 mW absolute max power dissipation rating |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True successive-approximation architecture ensures deterministic, one-shot conversion with precise CS-controlled sampling instant |
| VDRIVE logic independence | Allows serial interface to operate at 2.7 V–5.25 V regardless of VDD, eliminating external level-shifting components in mixed-voltage systems |
| Guaranteed no-missed-codes | B-grade specification ensures ±1.5/−0.9 LSB DNL across full temperature range, enabling reliable measurement of monotonic signals |
| Flexible power management | Three operational modes (normal, partial power-down, full power-down) let designers trade throughput for sub-µA quiescent current when idle |
| Wide input bandwidth support | 68 dB SNR at 300 kHz confirms suitability for anti-aliasing-limited applications such as sensor signal conditioning and optical detector readout |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Continuous acquisition of ECG or pulse oximetry analog signals in handheld diagnostic devices powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary analog-to-digital converter capturing conditioned biopotential waveforms at ≥1 kSPS with minimal power overhead. Use Value: 4.5 mW consumption at 3 V/1 MSPS extends battery runtime; 1 µA shutdown current eliminates leakage during sleep intervals between measurements. |
Use Scenario: Real-time monitoring of temperature, pressure, and flow transducer outputs in PLC I/O modules deployed in factory automation environments. IC Role / Device Role / Timing Role: High-speed front-end digitizer interfacing with op-amp signal chains and isolated microcontroller buses. Use Value: SPI-compatible serial interface simplifies integration with industrial MCUs; 8-lead MSOP footprint saves PCB area in dense modular designs. |
| Optical Sensor Interface | Wireless Sensor Node ADC |
Use Scenario: Digitizing photodiode or CCD output in compact optical analyzers requiring wide dynamic range and low noise floor. IC Role / Device Role / Timing Role: Precision ADC stage following transimpedance amplifier, converting analog photocurrent into calibrated digital counts. Use Value: 68 dB SINAD at 300 kHz preserves signal integrity from low-light detectors; external 2.5 V reference enables stable full-scale calibration across temperature. |
Use Scenario: Battery-operated environmental sensors transmitting humidity, acceleration, or acoustic data via BLE or LoRaWAN. IC Role / Device Role / Timing Role: Low-power ADC triggered by MCU on demand, converting sensor outputs before wireless transmission bursts. Use Value: Full power-down mode draws just 1 µA, minimizing average current draw; fast wake-up (<20 µs) enables rapid sampling without latency penalty. |
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 core but rated for 1.25 MSPS; higher typical power (5.5 mW @ 3 V/1 MSPS); identical 8-lead MSOP package and pinout | Preferred where marginally higher throughput or tighter production lot consistency is required | Select AD7476BRMZ-REEL if system design targets >1 MSPS headroom or requires newer revision silicon with updated characterization |
| ADS7822U | 12-bit, 200 kSPS max; 3.3 V only; integrated reference; different SPI timing and control protocol (no CS-driven sampling) | Suitable for lower-speed, cost-sensitive embedded systems where 1 MSPS is unnecessary | Choose ADS7822U only for legacy designs already using TI's interface model or where integrated reference simplifies BOM despite lower speed |
Compared with AD7475BRZ-REEL7, AD7476BRMZ-REEL offers higher speed headroom in the same footprint, while ADS7822U trades speed and flexibility for lower cost and simpler reference handling-neither is pin-compatible, and both require PCB layout and firmware adaptation.
Availability
AD7475BRZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered systems, medical instruments, and industrial data acquisition requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD7475BRZ-REEL7 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 AD7475BRZ-REEL7 belongs to Analog Devices' precision SAR ADC product line, engineered for low-power, high-speed data acquisition in portable, medical, and industrial instrumentation where accuracy, size, and energy efficiency are critical.
FAQ
What is the reference configuration for AD7475BRZ-REEL7?
The AD7475BRZ-REEL7 requires an external 2.5 V reference applied to the REF IN pin, with ±1% tolerance for specified performance. A minimum 0.1 µF ceramic capacitor must be placed directly at REF IN to GND to ensure stability and low-noise operation. Unlike the AD7495, it does not include an internal reference, making external reference selection critical for system accuracy and temperature drift budgeting. The AD7475BRZ-REEL7 reference input impedance is 20 pF with ±1 µA DC leakage.
Does AD7475BRZ-REEL7 support true 1 MSPS continuous conversion?
Yes, AD7475BRZ-REEL7 achieves a guaranteed 1 MSPS throughput rate when operated with a 20 MHz SCLK and proper timing margins. Conversion time is fixed at 800 ns (16 SCLK cycles), and the minimum quiet time (tQUIET) between conversions is 100 ns. With t2 = 10 ns setup and tACQ = 300 ns, the total cycle time fits within 1 µs, enabling sustained 1 MSPS operation without pipeline artifacts or data loss.
How does the VDRIVE pin function in AD7475BRZ-REEL7?
The VDRIVE pin on AD7475BRZ-REEL7 sets the logic voltage level for all digital I/Os (CS, SCLK, SDATA), independent of VDD. This allows direct connection to 3 V or 5 V microcontrollers even when VDD is at a different rail-e.g., VDD = 5 V for analog performance while VDRIVE = 3 V for MCU compatibility. Input thresholds scale with VDRIVE (e.g., VINH = VDRIVE − 1 V), and output drive strength is specified at 200 µA with VOH ≥ VDRIVE − 0.2 V.
What power-down modes are available on AD7475BRZ-REEL7?
AD7475BRZ-REEL7 offers three power states: Normal Mode (1.5 mA at 3 V/1 MSPS), Partial Power-Down Mode (~450 µA static), and Full Power-Down Mode (1 µA max). Power state is controlled via CS and SCLK sequencing per the datasheet's Operating Modes section. Full shutdown retains register state and wakes in <20 µs, making it ideal for duty-cycled sensing applications where the ADC sleeps between periodic acquisitions.
Is AD7475BRZ-REEL7 pin-compatible with AD7495 variants?
No, AD7475BRZ-REEL7 is not pin-compatible with AD7495 variants. While both share the same 8-lead MSOP/SOIC footprint and most pin assignments, Pin 1 differs: AD7475BRZ-REEL7 uses REF IN, whereas AD7495 uses REF OUT. Swapping them without circuit redesign will cause reference misconnection and invalid conversions. System-level validation is required before substituting either device, especially regarding reference decoupling and buffer requirements.
AD7475BRZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7475BRZ-REEL7 FAQ
1.How can I place an order for AD7475BRZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7475BRZ-REEL7 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 AD7475BRZ-REEL7 reliable?
The price and inventory of AD7475BRZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7475BRZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD7475BRZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7475BRZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7475BRZ-REEL7?
AD7475BRZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7475BRZ-REEL7 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 AD7475BRZ-REEL7?
For technical support, including AD7475BRZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7475BRZ-REEL7 requirements.
6.How does Aetrix verify that AD7475BRZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD7475BRZ-REEL7 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 AD7475BRZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD7475BRZ-REEL7?
All AD7475BRZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7475BRZ-REEL7, 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 AD7475BRZ-REEL7 part is unused and in its original packaging.
Return procedure for AD7475BRZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7475BRZ-REEL7 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…
