AD977BRS Analog Devices Integrated Circuit (Small Outline Packages) In Stock
AD977BRS is a 16-bit successive approximation ADC by Analog Devices sampling at up to 200 kSPS, accepting ±10 V analog inputs, with 8 µs maximum conversion time, serial SPI-compatible output, and a 28-pin SOIC package for precision data acquisition.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- AD977BRS Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-bit successive approximation ADC with 200 kSPS maximum sample rate
- Wide ±10 V bipolar analog input range for direct industrial signal connection
- 8 µs maximum conversion time enabling real-time control loop sampling
- Serial SPI-compatible output interface for easy microcontroller integration
- 28-pin SOIC package balancing pin count and PCB footprint for industrial designs
- Low noise performance suitable for vibration analysis and precision measurement
Applications
The AD977BRS is used in precision data acquisition systems, industrial process control, and vibration or acoustic monitoring equipment where 16-bit resolution at 200 kSPS is needed to capture fast-changing analog signals in the ±10 V range. Its serial interface simplifies connection to DSPs and microcontrollers in multi-channel measurement cards, reducing the interconnect pin count versus parallel ADCs. The device is also common in medical instrumentation front-ends and automated test equipment requiring high-accuracy, high-speed analog-to-digital conversion.
Specifications
| Source Url Status Check Date | 2013-05-01 14:56:32.273 |
| Pbfree Code | No |
| Manufacturer Package Code | RS-28 |
| YTEOL | 0 |
| Analog Input Voltage-Max | 10V |
| Analog Input Voltage-Min | -10 V |
| Conversion Time-Max | 8 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e0 |
| Linearity Error-Max (EL) | 0.0031% |
| Number of Analog In Channels | 3 |
| Number of Bits | 16 |
| Number of Functions | 1 |
| Output Bit Code | BINARY, 2S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 240 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.1MHz |
| Sample and Hold / Track and Hold | TRACK |
| Supply Current-Max | 35mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Tin/Lead (Sn85Pb15) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the AD977BRS accept, and why does this matter for industrial signal chains?
The AD977BRS accepts bipolar analog inputs from -10 V to +10 V, matching common industrial transmitter output ranges (4-20 mA across a 500 Ω load or ±10 V voltage outputs) directly without additional signal conditioning or attenuation resistors.
How quickly does the AD977BRS complete a single conversion, and what sample rates are achievable?
With a maximum conversion time of 8 µs, the AD977BRS supports throughput up to 200 kSPS, enabling acquisition of signals with bandwidths up to 100 kHz when paired with an anti-aliasing filter at the Nyquist limit.
For a vibration monitoring system sampling at 100 kSPS, how does the AD977BRS's 16-bit resolution improve measurement accuracy?
At 16 bits the AD977BRS provides approximately 96 dB of dynamic range and a resolution of ~305 µV over the full ±10 V input span, allowing detection of small vibration amplitudes superimposed on large DC offsets without separate gain stages or range switching.
How does the AD977BRS serial interface reduce wiring complexity in multi-channel data acquisition boards?
The SPI-compatible serial output uses only 3 to 4 signal lines (CS, CLK, DATA, and optionally BUSY) versus 16+ traces for a parallel ADC, making it practical to daisy-chain or bus multiple AD977BRS channels to a single DSP serial port on a multi-channel acquisition card.
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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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