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Analog Devices Inc. AD7477AAKS-500RL7
- Part No.:
- AD7477AAKS-500RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD7477AAKS-500RL7.pdf
- Description:
- IC ADC 10BIT 1MSPS SC70-6 T/R
- Quantity:
- Payment:
- Shipping:
Inventory:5,961
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Product details
Overview
AD7477AAKS-500RL7 from Analog Devices is a 10-bit, 1 MSPS successive-approximation ADC in a 6-lead SC70 package, operating from 2.35 V to 5.25 V supply. It delivers 61 dB SINAD at 100 kHz input, 71 dB SNR (typ), and ±0.5 LSB INL, serving as a high-speed, low-power analog front-end for portable instrumentation and battery-powered data acquisition.
For engineers reviewing the AD7477AAKS-500RL7 datasheet, AD7477AAKS-500RL7 pinout, AD7477AAKS-500RL7 application, or AD7477AAKS-500RL7 equivalent, key selection criteria include its 1 MSPS throughput with no pipeline delay, SPI/QSPI/MICROWIRE-compatible serial interface, 250 ns track-and-hold acquisition time, and internal VDD-referenced 0 V to VDD input range.
Technical Context
The AD7477AAKS-500RL7 implements a standard successive-approximation register (SAR) architecture with a track-and-hold amplifier supporting >13 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS, with sampling synchronized to that edge and no latency between command and result.
It uses a single-supply VDD-derived reference, eliminating external reference components and enabling rail-to-rail analog input (0 V to VDD). Serial data output is MSB-first, with four leading zeros followed by 10 data bits and two trailing zeros, compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - supports 1024-level quantization for medium-precision sensor and control loop applications |
| Throughput Rate | 1 MSPS - enables real-time sampling of signals up to ~400 kHz Nyquist bandwidth |
| SINAD | 61 dB min at 100 kHz - defines usable dynamic range for audio and baseband signal digitization |
| INL | ±0.5 LSB max - ensures monotonicity and linearity critical for closed-loop feedback accuracy |
| Power Dissipation | 5.1 mW max at 5 V / 1 MSPS - enables integration into thermally constrained handheld devices |
| Supply Range | 2.35 V to 5.25 V - supports direct connection to Li-ion, 3.3 V, and 5 V system rails without regulation |
| Standby Current | 1 µA max - allows rapid wake-up from ultra-low-power sleep states in duty-cycled systems |
Pinout & Package
AD7477AAKS-500RL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm, 0.9 mm height), optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power Supply Input | Single 2.35–5.25 V supply powering analog core, reference, and digital interface |
| 2 (GND) | Analog Ground Reference | Common return for analog input, internal track-and-hold, and reference circuitry |
| 3 (VIN) | Single-Ended Analog Input | Accepts 0 V to VDD input range; 20 pF input capacitance requires careful driver impedance matching |
| 4 (CS) | Active-Low Chip Select | Initiates conversion on falling edge and frames serial data transfer; minimum pulse width 10 ns |
| 5 (SDATA) | Serial Data Output | Three-state MSB-first output: 4 leading zeros + 10-bit result + 2 trailing zeros |
| 6 (SCLK) | Serial Clock Input | Controls conversion timing and data clocking; supports up to 20 MHz; determines throughput rate |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic 1-cycle latency - critical for time-sensitive control loops |
| VDD-referenced internal reference | Eliminates external reference IC and associated layout complexity while maintaining 0 V to VDD input range |
| Flexible serial interface | Native SPI/QSPI/MICROWIRE/DSP compatibility reduces firmware overhead and eliminates protocol translation logic |
| Ultra-low standby current | 1 µA max power-down mode enables microamp-level system sleep current in battery-operated endpoints |
| Wide supply voltage range | Operates across 2.35–5.25 V - supports direct interfacing with unregulated battery sources and mixed-voltage SoC domains |
Applications
| Battery-Powered Data Loggers | Portable Medical Sensors |
|---|---|
Use Scenario: Continuous monitoring of temperature, ECG, or SpO₂ signals in handheld diagnostic tools powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary analog front-end digitizer acquiring sensor outputs at 100 kSPS–1 MSPS with minimal power overhead. Use Value: 5.1 mW operational power at 5 V and 1 µA standby enable multi-week battery life in intermittent-sampling modes. |
Use Scenario: Signal conditioning in wearable vital-sign monitors requiring compact size and low thermal dissipation. IC Role / Device Role / Timing Role: 10-bit SAR ADC capturing amplified biopotential waveforms with 61 dB SINAD fidelity at 100 kHz. Use Value: 6-lead SC70 footprint saves >50% board area versus MSOP alternatives while maintaining rail-to-rail input range. |
| Industrial Sensor Transmitters | Optical Communication Receivers |
Use Scenario: Digitizing 4–20 mA loop sensor outputs or RTD/thermocouple signals in field-mounted process transmitters. IC Role / Device Role / Timing Role: Precision ADC interfacing with op-amp signal chains; tolerant of 2.35–5.25 V supply variations common in 24 V loop-powered designs. Use Value: ±0.5 LSB INL and no missing codes ensure accurate linearization of analog sensor responses over temperature. |
Use Scenario: Converting photodiode current outputs in optical receivers for fiber-optic or ambient light sensing. IC Role / Device Role / Timing Role: High-speed sampling of conditioned analog pulses with 13.5 MHz full-power bandwidth and 250 ns acquisition time. Use Value: 71 dB SNR (typ) at 100 kHz preserves signal integrity for low-amplitude optical signals in noisy environments. |
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 |
|---|---|---|---|
| AD7476AAKSZ-500RL7 | 12-bit resolution, same SC70-6 package, identical pinout and interface; higher power (17.5 mW max at 5 V) | Required where >10-bit precision is needed for calibration or high-dynamic-range sensors | Select when resolution outweighs power budget constraints; shares layout and firmware compatibility |
| ADS7822U | 12-bit, 200 kSPS, 8-pin SOIC; SPI-compatible but slower; 3.3 V only supply; 1.25 mW at 3.3 V | Suitable for lower-speed, cost-sensitive industrial controls where SC70 size is not mandatory | Choose for legacy 3.3 V systems with relaxed speed requirements and larger board area allowance |
Compared with AD7477AAKS-500RL7, the AD7476AAKSZ-500RL7 offers 2 extra bits at 2.5× higher power, while the ADS7822U trades speed and resolution for lower cost and simpler supply design - making AD7477AAKS-500RL7 optimal for 1 MSPS, 10-bit, space-constrained applications.
Availability
AD7477AAKS-500RL7 is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and industrial sensor transmitters requiring stable component supply across automotive-grade temperature ranges (−40°C to +85°C).
Supply support for AD7477AAKS-500RL7 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, headquartered in Norwood, MA.
The AD7476A/AD7477A/AD7478A family was designed for space- and power-constrained data acquisition in portable and battery-operated equipment, delivering high-speed SAR performance in miniature SC70 packaging.
FAQ
What is the maximum sample rate supported by the AD7477AAKS-500RL7?
The AD7477AAKS-500RL7 supports a maximum throughput rate of 1 MSPS under specified conditions (VDD = 2.35 V to 5.25 V, fSCLK = 20 MHz). Its conversion time is fixed at 700 ns max (14 SCLK cycles), and actual achievable rate depends on SCLK frequency and system timing margins. At lower clock speeds, throughput scales linearly - e.g., 5 MHz SCLK yields ~315 kSPS.
Does the AD7477AAKS-500RL7 require an external reference voltage?
No, the AD7477AAKS-500RL7 uses an internal reference derived from VDD, enabling a full-scale analog input range of 0 V to VDD. This eliminates the need for external reference components and simplifies layout, though it ties input range directly to supply stability - VDD must be well-regulated for precision applications.
What serial interface protocols does the AD7477AAKS-500RL7 support?
The AD7477AAKS-500RL7 supports SPI, QSPI, MICROWIRE, and generic DSP-compatible serial interfaces. It uses a 4-zero-leading, 10-bit-result, 2-zero-trailing data format clocked on the falling edge of SCLK, with CS framing each conversion. No mode pins or configuration registers are required - interface behavior is hardwired.
What is the guaranteed operating temperature range for the AD7477AAKS-500RL7?
The AD7477AAKS-500RL7 is rated for operation from −40°C to +85°C (A/B grade), qualified for industrial and extended commercial environments. Its SC70 package has θJA = 340.2°C/W, requiring attention to PCB copper pour and airflow in high-temperature deployments.
How does the power consumption of the AD7477AAKS-500RL7 scale with throughput?
AD7477AAKS-500RL7 power scales nearly linearly with throughput: 1.7 mA max (5.1 mW) at 1 MSPS and 5 V, dropping to 1.2 mA typ (3.6 mW) at 1 MSPS and 3 V. In full power-down mode, current is 1 µA max - allowing dynamic power gating between conversions to reduce average power in burst-mode systems.
AD7477AAKS-500RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- 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:
- SC-70-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7477AAKS-500RL7 FAQ
1.How can I place an order for AD7477AAKS-500RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7477AAKS-500RL7 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 AD7477AAKS-500RL7 reliable?
The price and inventory of AD7477AAKS-500RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7477AAKS-500RL7 is usually 5 days.
3.What payment methods are accepted for AD7477AAKS-500RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7477AAKS-500RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7477AAKS-500RL7?
AD7477AAKS-500RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7477AAKS-500RL7 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 AD7477AAKS-500RL7?
For technical support, including AD7477AAKS-500RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7477AAKS-500RL7 requirements.
6.How does Aetrix verify that AD7477AAKS-500RL7 is sourced from the original manufacturer or authorized distributors?
All AD7477AAKS-500RL7 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 AD7477AAKS-500RL7 meets industry standards.
7.What is the process for return or replacement of AD7477AAKS-500RL7?
All AD7477AAKS-500RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7477AAKS-500RL7, 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 AD7477AAKS-500RL7 part is unused and in its original packaging.
Return procedure for AD7477AAKS-500RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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