MAX149BMAP/PR3+T Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices MAX149BMAP/PR3+T is a low-power 10-bit successive-approximation ADC with 8 analog input channels and a serial interface, operating from 2.7 V to 5.25 V with a maximum conversion time of 65 µs, housed in a 20-pin SSOP package. It is designed for portable data-acquisition instruments, battery-powered sensor hubs, and multichannel industrial monitoring applications.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MAX149BMAP/PR3+T Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX149BMAP/PR3+T?
- 8-channel multiplexed input with 10-bit successive approximation conversion for multichannel sensor acquisition
- Wide supply range from 2.7 V to 5.25 V supporting both 3.3 V and 5 V logic systems
- Maximum conversion time of 65 µs enabling sample rates compatible with audio and process-control loops
- Serial SPI-compatible interface minimizing GPIO pin consumption on the host microcontroller
- Analog input voltage range of -2.65 V to +2.65 V for direct differential sensor interfacing
- Low-power design optimized for battery-operated portable measurement equipment
- 20-pin SSOP package (5.3 mm body) for compact SMT board integration
What is MAX149BMAP/PR3+T used for?
MAX149BMAP/PR3+T is commonly used in portable data loggers, multichannel temperature and pressure monitoring systems, and battery-powered industrial sensors where eight analog channels must be digitized with 10-bit resolution from a compact serial interface. Its wide supply range and low-power architecture also suit solar-harvesting IoT gateways and handheld test instruments requiring simultaneous multi-sensor readout.
What are the specifications of MAX149BMAP/PR3+T?
| Manufacturer Package Code | 20-SSOP-5.3_MM |
| Date Of Intro | 1996-01-23 |
| YTEOL | 9 |
| Analog Input Voltage-Max | 2.65V |
| Analog Input Voltage-Min | -2.65 V |
| Conversion Time-Max | 65 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G20 |
| Linearity Error-Max (EL) | 0.097656% |
| Number of Analog In Channels | 8 |
| Number of Bits | 10 |
| Number of Functions | 1 |
| Output Bit Code | BINARY, 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Sample Rate | 0.133MHz |
| Sample and Hold / Track and Hold | TRACK |
| Supply Current-Max | 3mA |
| Supply Voltage-Nom | 3.6V |
| Surface Mount | YES |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A001.a.2.c |
| HTS Code | 8542.39.00.30 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX149BMAP/PR3+T datasheet?
MAX149BMAP/PR3+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX149BMAP/PR3+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many analog channels does MAX149BMAP/PR3+T provide, and can they be sampled in a round-robin sequence?
MAX149BMAP/PR3+T integrates 8 analog input channels multiplexed to a single 10-bit SAR ADC core. The host controller selects each channel via the SPI command word, allowing a sequential or user-defined scanning order. At a maximum conversion time of 65 µs per channel, all 8 channels can be sampled in approximately 520 µs, yielding an effective per-channel rate of about 1.9 kSPS in a sequential scan.
What supply voltage range does MAX149BMAP/PR3+T require, and is it compatible with both 3.3 V and 5 V microcontroller systems?
MAX149BMAP/PR3+T operates from 2.7 V to 5.25 V, covering both 3.3 V and 5 V supply rails. The serial interface logic levels track the supply, so a 3.3 V MCU can drive the SPI lines directly at 3.3 V without a level shifter. This dual-voltage compatibility simplifies integration in mixed-voltage PCB designs common in modern embedded systems.
What is the analog input range of MAX149BMAP/PR3+T, and how does it interface with a ±2.5 V bridge sensor output?
The analog input accepts signals from -2.65 V to +2.65 V, matching a ±2.5 V differential sensor output with minimal headroom to spare. This allows a resistive bridge or differential pressure sensor operating at ±2.5 V full scale to connect directly to the ADC input without a pre-scaling amplifier, reducing component count and preserving the full 10-bit dynamic range across the sensor output span.
What package does MAX149BMAP/PR3+T use, and what are the implications for high-density PCB designs?
MAX149BMAP/PR3+T is housed in a 20-pin SSOP package with a 5.3 mm body width and 0.65 mm pin pitch (JESD-30 R-PDSO-G20). The narrow SSOP body occupies significantly less board area than an equivalent 20-pin DIP or wide SOIC, making it suitable for compact data-acquisition boards. The +T suffix indicates tape-and-reel packaging for automated SMT assembly.
How does MAX149BMAP/PR3+T's 10-bit resolution compare to 12-bit ADCs for industrial sensor digitization, and when is 10 bits sufficient?
A 10-bit ADC provides 1024 discrete steps, giving a resolution of approximately 0.1% of full scale. For industrial temperature sensing over a 0°C to 100°C range, this translates to roughly 0.1°C step size, which satisfies most HVAC and process monitoring requirements. Twelve-bit ADCs provide 0.025% resolution and are justified only when the application requires finer discrimination, such as precision weighing or medical-grade pressure measurement.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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