ADCS7476AIMF/NOPB - 1MSPS 12-Bit SAR ADC, SOT-23-6 | Texas Instruments
N.º de pieza: ADCS7476AIMF/NOPB ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.62 | $26,20 |
| 100 | $2.2 | $220,00 |
| 500 | $1.85 | $925,00 |
| 1.000 | $1.55 | $1.550,00 |
ADCS7476AIMF/NOPB Descripción general
An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary-search algorithm against an internal precision DAC to determine each code bit in N clock cycles. SAR ADCs are valued for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, sitting hierarchically below pipelined ADCs (used) and delta-sigma ADCs (used) and above simple flash ADCs in the data-converter taxonomy.
Key specifications of the ADCS7476AIMF/NOPB include 12-bit resolution, 1 MSPS throughput, single-channel single-ended input, low power consumption of approximately 3.6 mW at 1 MSPS with a 3V supply, and an operating temperature range of -40 °C to +125 °C. The device is part of the ADCS7476/7/8 family from Texas Instruments, designed explicitly as a drop-in replacement for Analog Devices' AD7476/7/8 pin-comparable predecessors. The /NOPB suffix indicates a lead-free, RoHS-compliant matte-tin finish supplied on a 7-inch reel.
The ADCS7476AIMF/NOPB uses an internal track-and-hold front end, allowing the converter to handle input frequencies well above Nyquist with minimal aperture-induced distortion. The serial output frame is standard MSB-first with an optional LSB-first mode, giving firmware compatibility across SPI, QSPI, MICROWIRE, and most common DSP serial ports. A dedicated CONVST input controls sampling instant, enabling deterministic multi-channel synchronization when multiple ADCS7476 devices share the same SPI bus.
Typical applications include industrial process-control analog inputs, portable battery-powered instrumentation, optical-module monitoring, motor-control current/voltage sense, and general-purpose 12-bit data acquisition where PCB area is at a premium. Designers also use it as a low-cost upgrade from 10-bit converters where small-area, low-power 12-bit sampling is required.
When designing with this part, place the 0.1 µF VDD bypass capacitor as close as possible to pin 6 and keep the analog input trace short and guarded. Because the SOT-23-6 package dissipates only a few milliwatts at 1 MSPS, no thermal management is needed. The CS/SCLK/DOUT digital lines should be routed together and, if the host runs above 5 V, level-shifted to avoid violating the absolute maximum rating on the digital inputs.
This page synthesizes distributor pricing, true drop-in alternatives, and practical design notes that complement the manufacturer datasheet and aid in MPN selection for area-constrained 12-bit SAR ADC designs.
Alternativas directas para ADCS7476AIMF/NOPB — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADCS7476AIMF/NOPB (mismo factor de forma y huella) — difiere en Operating Temperature Range, Package, Resolution, RoHS Status, Input Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADCS7476AIMFE/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADCS7477AIMF/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADCS7478AIMF/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADCS7476AIMFX/NOPB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7476ARTZ-REEL7
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
AD7476ARTZ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADCS7476AIMF/NOPB Valores máximos y características eléctricas
| Resolución | 12 bit |
| Frecuencia de muestreo | 1 MSPS |
| Number of Channels | 1 |
| Input Channel Type | Single-Ended |
| Architecture | SAR (Successive Approximation Register) |
| Data Interface | Serial, SPI/QSPI/MICROWIRE/DSP-compatible |
| Analog Supply Voltage Range | 2.7 V to 5.25 V |
| Digital Supply Voltage Range | 1.7 V to VDD |
| Rango de temperatura de funcionamiento | -40 °C to +125 °C |
| Encapsulado | SOT-23-6 (DBV/DRL) |
| Tipo de montaje | Surface Mount |
| Input Type | Single-Ended, unipolar |
| Estado RoHS | Compliant (/NOPB suffix, Pb-free matte-tin) |
| Lead-Free Finish | Yes (NOPB = matte-tin, lead-free) |
| Nivel MSL | 1 |
| Family Pin Compatibility | Drop-in replacement for AD7476 |
Configuración de pines de ADCS7476AIMF/NOPB
| Pin 1 | CONVST — Conversion Start input. A falling edge initiates a conversion; tied to CS in single-device systems. |
| Pin 2 | CS — Chip Select, active low. Frames the serial output and enables SCLK. |
| Pin 3 | AIN — Analog Input. Single-ended, 0 V to VDD input range. |
| Pin 4 | GND — Ground. Return path for both analog and digital supplies. |
| Pin 5 | DOUT — Serial Data Output. MSB-first (default) or LSB-first serial data, clocked out on SCLK falling edge. |
| Pin 6 | VDD — Power Supply. 2.7 V to 5.25 V analog and digital supply input. Decouple with 0.1 µF ceramic to GND. |
Aplicaciones típicas
ADCS7476AIMF/NOPB es adecuado para 6 aplicacións: Industrial Process-Control Analog Input, Portable Battery-Powered Instrumentation, Optical Module Monitoring, Motor Control Current/Voltage Sense, General-Purpose 12-Bit Data Acquisition, Precision Sensor Signal Conditioning.
Industrial Process-Control Analog Input
The ADCS7476AIMF/NOPB fits industrial 4-20 mA loop-derived voltage measurements because of its 12-bit resolution, 1 MSPS throughput, and 2.7 V to 5.25 V supply range that survives 24 V bus transients after resistive scaling. Its SPI-compatible serial interface integrates directly with most industrial microcontrollers and PLCs, and the SOT-23-6 footprint allows dense multi-channel layouts on small PCBs. The internal track-and-hold handles input frequencies well above Nyquist with minimal aperture-induced distortion, making it ideal for high-speed sensor signal acquisition in factory automation and process-control systems.
Recomendado
Portable Battery-Powered Instrumentation
The ADCS7476AIMF/NOPB consumes only a few milliwatts at 1 MSPS and operates from 2.7 V to 5.25 V, making it ideal for portable, battery-powered instrumentation such as handheld multimeters, portable data loggers, and field test equipment. The SOT-23-6 footprint occupies only 8 mm² of board area, leaving room for compact portable designs, while the -40 °C to +125 °C operating range supports outdoor and industrial field environments. The SPI/QSPI/MICROWIRE/DSP-compatible interface allows direct connection to low-power microcontrollers without level shifters.
Recomendado
Optical Module Monitoring
The ADCS7476AIMF/NOPB fits optical-module monitoring (SFP, QSFP, transceivers) because its 12-bit resolution captures precise optical power levels and its SOT-23-6 footprint fits inside the tight module housing. The 1 MSPS throughput allows fast AGC loop control, and the SPI interface is standard in most optical-module controllers. The device's low power consumption of a few milliwatts is critical for hot-pluggable modules with strict power budgets, and the lead-free NOPB finish meets telecom industry environmental requirements.
Recomendado
Motor Control Current/Voltage Sense
The ADCS7476AIMF/NOPB is well-suited for motor-control current and voltage sense loops because its 1 MSPS throughput enables sub-microsecond feedback sampling for field-oriented control. Its 12-bit resolution provides adequate dynamic range for current shunt measurements, and the SPI interface is compatible with most motor-control MCUs. The SOT-23-6 footprint allows placement near the sense resistors with minimal trace length, reducing noise pickup. The -40 °C to +125 °C operating range handles the harsh thermal environment of motor-drive electronics.
Recomendado
General-Purpose 12-Bit Data Acquisition
The ADCS7476AIMF/NOPB is ideal for general-purpose 12-bit data acquisition systems where PCB area is at a premium and SPI is the preferred interface. Its 1 MSPS throughput provides ample oversampling for most sensor bandwidths, and the 12-bit resolution captures fine analog detail. The SOT-23-6 footprint is one of the smallest available for a 1 MSPS 12-bit SAR ADC, making it perfect for compact designs. Designers also use it as a low-cost upgrade from 10-bit converters where small-area, low-power 12-bit sampling is required.
Recomendado
Precision Sensor Signal Conditioning
The ADCS7476AIMF/NOPB fits precision sensor signal conditioning applications such as strain-gauge bridges, thermocouple amplifiers, and pressure-sensor outputs because of its 12-bit resolution and 1 MSPS throughput. The internal track-and-hold handles high-impedance sensor sources with minimal acquisition-time error, and the SPI-compatible interface integrates with most precision-signal chains. The 2.7 V to 5.25 V supply range accommodates common sensor supply voltages, and the SOT-23-6 footprint allows placement near the sensor for optimal signal integrity.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADCS7476AIMF/NOPB — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADCS7476AIMFE/NOPB | ADCS7477AIMF/NOPB | ADCS7478AIMF/NOPB | AD7476ARTZ-REEL7 | AD7476ARTZ |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Package | SOT-23-6 | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same |
| Resolution | 12 bit | 12 bit | 10 bit | 8 bit | 12 bit | 12 bit |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Analog Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.7 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V |
| Data Interface | SPI/QSPI/MICROWIRE/DSP | SPI/QSPI/MICROWIRE/DSP | SPI/QSPI/MICROWIRE/DSP | SPI/QSPI/MICROWIRE/DSP | SPI/QSPI/MICROWIRE/DSP | SPI/QSPI/MICROWIRE/DSP |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| RoHS Compliance | Yes (NOPB = Pb-free) | Yes (NOPB = Pb-free) | Yes (NOPB = Pb-free) | Yes (NOPB = Pb-free) | Yes (RTZ = Pb-free) | Yes (RTZ = Pb-free) |
| Architecture | SAR with internal track-and-hold | SAR with internal track-and-hold | SAR with internal track-and-hold | SAR with internal track-and-hold | SAR with internal track-and-hold | SAR with internal track-and-hold |
Diferenciadores clave
- Drop-in replacement for Analog Devices AD7476 (frente a AD7476ARTZ-REEL7 (Analog Devices))
- 12-bit resolution in the ADCS747x family (frente a ADCS7478AIMF/NOPB (8-bit version))
- Extended -40 °C to +125 °C temperature range (frente a AD7476ARTZ-REEL7 (Analog Devices, -40 °C to +85 °C))
Notas de diseño
Place a 0.1 µF ceramic bypass capacitor as close as possible to pin 6 (VDD) and pin 4 (GND). Keep the analog input trace (pin 3) short and guarded with a ground plane to minimize noise pickup. The SOT-23-6 package has no thermal pad, so no thermal management is required - the device dissipates only a few milliwatts at 1 MSPS, well within the package's thermal limits.
Route the SPI signals (CS, SCLK, DOUT) together as a bus and avoid crossing noisy digital or switching power traces. For input frequencies above 100 kHz, place a small RC filter (10 Ω + 100 pF) on the AIN pin to limit bandwidth and prevent aliasing of out-of-band noise. The internal track-and-hold requires the analog input to settle within the acquisition window (typically 200 ns), so a low-impedance driver op-amp is recommended for high-impedance sources.
Do not exceed the absolute maximum ratings on the analog input (AVDD + 0.3 V) or digital inputs (DVDD + 0.3 V). For 5 V-tolerant microcontrollers interfacing to a 3.3 V-powered ADCS7476AIMF/NOPB, ensure the digital inputs do not exceed the DVDD supply. The CONVST pin must be held low during the conversion process and pulsed high to start a new conversion. Tying CONVST to CS simplifies timing in single-device systems but limits throughput in multi-channel designs.
Estimated: at 1 MSPS with a 5 V supply, the ADCS7476AIMF/NOPB consumes approximately 8 mW of power. With a 3 V supply, consumption drops to approximately 3.6 mW per the datasheet. The device supports an active-low power-down mode via CS that reduces consumption to less than 1 µA, making it suitable for battery-powered applications where the ADC is duty-cycled to save power.
Información de cumplimiento
RoHS compliant per /NOPB suffix indicating lead-free matte-tin finish. REACH compliant per TI product page. Not AEC-Q100 qualified - this is a general-purpose industrial/consumer part. Halogen-free per TI documentation. Conflict-minerals compliant per TI policy.
