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Texas Instruments ADCS7477AIMFX/NOPB
- Part No.:
- ADCS7477AIMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADCS7477AIMFX/NOPB.pdf
- Description:
- IC ADC 10BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,107
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Product details
Overview
ADCS7477AIMFX/NOPB from Texas Instruments is a 10-bit, 1-MSPS successive-approximation analog-to-digital converter (SAR ADC) with internal track-and-hold, serial SPI-compatible interface, and single-supply operation from 2.7 V to 5.25 V. It delivers ±0.2 LSB typical INL, –0.2/+0.3 LSB typical DNL, and 61.7 dBFS SINAD at 100 kHz input - optimized for portable instrumentation and automotive navigation systems requiring low power and small footprint.
For engineers reviewing the ADCS7477AIMFX/NOPB datasheet, ADCS7477AIMFX/NOPB pinout, ADCS7477AIMFX/NOPB application, or ADCS7477AIMFX/NOPB equivalent, key selection criteria include its 6-pin SOT-23 package, supply-as-reference architecture (0–VDD input range), 1 µs wake-up time from shutdown, and guaranteed 10-bit no-missing-codes performance across –40°C to 125°C.
Technical Context
The ADCS7477AIMFX/NOPB implements a charge-redistribution SAR architecture with integrated track-and-hold. Conversion is initiated by the falling edge of CS, and 16 SCLK cycles are required to output the full result: four leading zeros, ten data bits (MSB first), and two trailing zeros.
It operates with VDD as both supply and reference, enabling rail-to-rail input (0 to VDD). The serial interface supports SPI, QSPI, and MICROWIRE protocols, with timing validated up to 20 MHz SCLK and 1 MSPS throughput across –40°C to 85°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with no missing codes - guarantees monotonicity and deterministic code transitions in closed-loop control. |
| Sampling Rate | 1 MSPS maximum - supports real-time acquisition of signals up to ~400 kHz Nyquist bandwidth. |
| INL | ±0.2 LSB (typical at 25°C) - ensures <0.02% full-scale linearity error for precision sensor interfacing. |
| DNL | –0.2 / +0.3 LSB (typical at 25°C) - eliminates code-width anomalies critical for histogram-based measurements. |
| Power Consumption | 2 mW at 3 V / 1 MSPS - enables battery-powered operation with <1 µA shutdown current (5 V, SCLK off). |
| Input Range | 0 V to VDD - simplifies signal conditioning by eliminating external reference or level-shifting circuitry. |
| Aperture Jitter | 30 ps - limits SNR degradation to <0.3 dB at 100 kHz input, preserving dynamic fidelity. |
Pinout & Package
ADCS7477AIMFX/NOPB is housed in a 6-pin SOT-23 package (1.60 mm × 2.90 mm body), optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply and reference input | Must be bypassed with 0.1 µF + 1 µF capacitors within 1 cm; sets full-scale analog input range (0 to VDD). |
| 2 - GND | Analog/digital ground return | Single ground plane required; separates noise-sensitive analog sampling path from digital switching currents. |
| 3 - VIN | Analog input | High-impedance (30 pF), rail-to-rail capable; accepts DC or AC-coupled signals up to VDD. |
| 4 - SCLK | Serial clock input | Controls conversion timing and data readout; supports 10 kHz–20 MHz frequencies with 40%–60% duty cycle. |
| 5 - SDATA | Serial data output | Tri-state CMOS output; delivers 16-bit frame (4 leading zeros + 10 data bits + 2 trailing zeros) on SCLK falling edges. |
| 6 - CS | Chip select input | Falling edge initiates conversion and exits tri-state; rising edge or 16th SCLK falling edge re-enables tri-state. |
Key Features
| Feature | Design Value |
|---|---|
| Supply-as-reference architecture | Eliminates external voltage reference IC and associated layout complexity while maintaining 10-bit accuracy over VDD = 2.7–5.25 V. |
| 1 µs power-up from shutdown | Enables burst-mode sampling in energy-sensitive applications (e.g., battery-powered sensors) without latency penalty. |
| SPI/QSPI/MICROWIRE compatibility | Interoperates with TI C2000, STM32, and NXP Kinetis MCUs without protocol translation or glue logic. |
| Automotive-grade temperature range | Specified from –40°C to 125°C ambient, supporting under-hood and infotainment subsystem deployment. |
| Low input capacitance (30 pF) | Reduces settling burden on driving amplifiers and allows direct connection to high-impedance sources like piezoresistive sensors. |
Applications
| Automotive Navigation Systems | Portable Medical Instrumentation |
|---|---|
Use Scenario: Analog front-end digitization of GPS antenna signal strength, inertial sensor outputs, and vehicle speed pulses in compact navigation units. IC Role / Device Role / Timing Role: Primary SAR ADC acquiring synchronized multi-channel sensor data at 1 MSPS with minimal board area. Use Value: 6-pin SOT-23 footprint and supply-as-reference design reduce BOM count and PCB layer count versus discrete reference + ADC solutions. |
Use Scenario: Battery-powered glucose meters and portable ECG monitors requiring precise, low-noise analog measurement under strict size constraints. IC Role / Device Role / Timing Role: High-fidelity signal digitizer interfacing with op-amp front-ends and microcontroller SPI peripherals. Use Value: 2 mW active power at 3 V extends battery life; 10-bit linearity ensures clinical-grade measurement repeatability per ISO 13485. |
| Industrial FA/ATM Equipment | Mobile Communications Baseband |
Use Scenario: Real-time monitoring of motor current, temperature, and position feedback in factory automation PLC I/O modules and ATM cash-handling subsystems. IC Role / Device Role / Timing Role: Robust, temperature-stable ADC handling noisy industrial environments with wide supply tolerance (2.7–5.25 V). Use Value: Guaranteed 10-bit no-missing-codes performance across –40°C to 125°C ensures reliable fault detection even in uncontrolled enclosures. |
Use Scenario: Digitizing IF or baseband analog signals in LTE/Wi-Fi client devices where RF coexistence demands ultra-low digital switching noise. IC Role / Device Role / Timing Role: Low-jitter (30 ps aperture) ADC minimizing quantization noise impact on adjacent RF receivers. Use Value: 30 ps aperture jitter preserves >61 dBFS SINAD at 100 kHz, meeting spectral purity requirements for FCC Part 15 compliance. |
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 |
|---|---|---|---|
| AD7477ARTZ-REEL7 | Same 10-bit resolution and 1 MSPS rate, but requires external reference; 6-pin SOT-23 package; higher DNL (±0.5 LSB max). | Requires additional reference IC and decoupling, increasing board area and BOM cost. | Choose when legacy AD7477 compatibility or tighter production lot traceability is required. |
| MCP3201-I/P | 12-bit resolution, 100 kSPS max, 2.7–5.5 V supply; SPI-only interface; no shutdown mode; DIP-8 package. | Lacks shutdown mode and automotive temperature rating; larger through-hole footprint limits portability. | Choose only for non-automotive, lower-speed (<100 kSPS), through-hole prototyping where 12-bit resolution outweighs speed and size trade-offs. |
Compared with AD7477ARTZ-REEL7, ADCS7477AIMFX/NOPB integrates the reference and offers superior DNL; compared with MCP3201-I/P, it delivers 10× faster sampling, shutdown capability, and AEC-Q200-aligned temperature range - making it optimal for space- and power-constrained embedded systems.
Availability
ADCS7477AIMFX/NOPB is available at Aetrix Electronics and suitable for automotive navigation systems, portable medical instrumentation, industrial FA/ATM equipment, and mobile communications baseband designs requiring stable component supply and long-term lifecycle support.
Supply support for ADCS7477AIMFX/NOPB 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and automotive-grade ICs.
The ADCS747x family was designed for high-speed, low-power, space-constrained applications including automotive infotainment, portable test equipment, and industrial sensor nodes - emphasizing integration, supply-as-reference simplicity, and extended temperature reliability.
FAQ
What is the resolution and accuracy specification of the ADCS7477AIMFX/NOPB?
The ADCS7477AIMFX/NOPB is a guaranteed 10-bit SAR ADC with no missing codes across –40°C to 85°C. Its typical integral non-linearity (INL) is ±0.2 LSB at 25°C, and differential non-linearity (DNL) is –0.2/+0.3 LSB. These values ensure monotonic behavior and <0.02% full-scale linearity error, making ADCS7477AIMFX/NOPB suitable for precision measurement applications such as medical instrumentation and industrial control feedback loops.
Does the ADCS7477AIMFX/NOPB require an external voltage reference?
No, the ADCS7477AIMFX/NOPB uses its VDD supply as the reference voltage, enabling a full-scale input range of 0 V to VDD. This eliminates the need for an external reference IC, reduces BOM count, and simplifies layout - a key advantage over alternatives like the AD7477ARTZ-REEL7, which requires a separate reference. The supply-as-reference architecture is fully characterized across 2.7 V to 5.25 V and –40°C to 125°C.
What serial interface protocols does the ADCS7477AIMFX/NOPB support?
The ADCS7477AIMFX/NOPB supports SPI, QSPI, and MICROWIRE serial interfaces, with timing compatibility verified up to 20 MHz SCLK. Its SDATA output delivers a 16-bit frame (4 leading zeros + 10 data bits + 2 trailing zeros) on SCLK falling edges. This interoperability allows direct connection to common microcontrollers including TI C2000, STMicroelectronics STM32, and NXP Kinetis families without protocol translation hardware.
How does the power management of the ADCS7477AIMFX/NOPB work?
The ADCS7477AIMFX/NOPB features a chip-select–controlled shutdown mode. When CS remains high and SCLK is inactive, quiescent current drops to 0.5 µA (at 5 V), reducing power consumption to 2.5 µW. Wake-up time from shutdown is 1 µs, enabling efficient burst-mode sampling. In normal 1-MSPS operation, it consumes only 2 mW at 3 V - ideal for battery-powered portable systems where ADCS7477AIMFX/NOPB balances speed, precision, and energy efficiency.
What is the operating temperature range of the ADCS7477AIMFX/NOPB?
The ADCS7477AIMFX/NOPB is specified for operation from –40°C to 125°C ambient temperature, meeting automotive and extended industrial requirements. Electrical characteristics including INL, DNL, SINAD, and throughput rate are guaranteed across this full range. This makes ADCS7477AIMFX/NOPB suitable for under-hood automotive modules, factory-floor controllers, and outdoor-connected devices where thermal resilience is critical.
ADCS7477AIMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- 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:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADCS7477AIMFX/NOPB FAQ
1.How can I place an order for ADCS7477AIMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADCS7477AIMFX/NOPB 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 ADCS7477AIMFX/NOPB reliable?
The price and inventory of ADCS7477AIMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADCS7477AIMFX/NOPB is usually 5 days.
3.What payment methods are accepted for ADCS7477AIMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADCS7477AIMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADCS7477AIMFX/NOPB?
ADCS7477AIMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADCS7477AIMFX/NOPB 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 ADCS7477AIMFX/NOPB?
For technical support, including ADCS7477AIMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADCS7477AIMFX/NOPB requirements.
6.How does Aetrix verify that ADCS7477AIMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADCS7477AIMFX/NOPB 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 ADCS7477AIMFX/NOPB meets industry standards.
7.What is the process for return or replacement of ADCS7477AIMFX/NOPB?
All ADCS7477AIMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADCS7477AIMFX/NOPB, 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 ADCS7477AIMFX/NOPB part is unused and in its original packaging.
Return procedure for ADCS7477AIMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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