AD977ABRSZ Analog Devices Integrated Circuit (Small Outline Packages) In Stock
AD977ABRSZ is a 16-bit successive approximation ADC from Analog Devices with a serial interface in a 28-pin SSOP package. Supports ±10 V analog input range with 4 µs maximum conversion time and 0.003% linearity error. Available from stock worldwide with fast shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- AD977ABRSZ 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 SAR ADC with ±10 V wide analog input range for precision industrial signal measurement
- 4 µs maximum conversion time enabling sampling rates up to 250 kSPS for multi-channel data acquisition
- Ultra-low 0.003% linearity error ensuring high accuracy in instrumentation and industrial control applications
Applications
AD977ABRSZ is well-suited for industrial data acquisition systems, precision instrumentation, and process control equipment where high-resolution digitization of ±10 V sensor signals is required. Its 16-bit resolution captures fine signal variations in strain gauge amplifiers, thermocouple conditioners, and vibration analysis systems with minimal quantization error. The device is also deployed in medical diagnostic equipment and automated test systems demanding both wide input range and high measurement accuracy.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | RS-28 |
| YTEOL | 0 |
| Analog Input Voltage-Max | 10V |
| Analog Input Voltage-Min | -10 V |
| Conversion Time-Max | 4 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| 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 Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.2MHz |
| 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 | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for AD977ABRSZ:
16-Bit, 1 Func, 3 Channel, Serial Access, BICMOS, PDSO28
Frequently Asked Questions
What is the maximum throughput rate of AD977ABRSZ and how many channels can it handle in a multiplexed data acquisition system?
With a 4 µs maximum conversion time, AD977ABRSZ achieves a throughput of up to 250 kSPS for a single channel. In a multiplexed system with 8 analog inputs, effective per-channel rate drops to approximately 31 kSPS, which is adequate for industrial process variables such as pressure, temperature, and flow signals that typically change at rates below 1 kHz. Adding settling time for the multiplexer and amplifier typically reduces usable throughput by 20% to 30%.
How does the ±10 V input range of AD977ABRSZ simplify interfacing with industrial 4-20 mA transmitters?
Industrial 4-20 mA transmitters converted to voltage across a 500 Ω precision resistor produce 2 V to 10 V signals, fitting within the AD977ABRSZ ±10 V input range without level shifting or attenuation. This eliminates an op-amp gain stage, reducing BOM cost and noise contribution. The 16-bit resolution yields approximately 305 µV per LSB at 10 V full scale, resolving the 4-20 mA span into over 26,000 counts for precise process measurement.
When is AD977ABRSZ preferred over a 12-bit ADC for strain gauge bridge measurements?
Strain gauge bridges typically produce full-scale outputs of 1 mV/V to 3 mV/V, meaning a 10 V excitation yields only 10 mV to 30 mV of signal span. A 12-bit ADC with 10 V input range provides only 2.4 mV per LSB, resolving just 4 to 12 counts across the bridge span. AD977ABRSZ at 16-bit resolution provides 0.15 mV per LSB, resolving the same bridge span into 66 to 200 counts, enabling accurate sub-microstrain measurements that 12-bit converters cannot achieve.
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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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