AFE88101
Single-channel low-power 16-bit DAC for sensor and field transmitter applications
AFE88101
- Functional Safety-Capable
- Low quiescent current: 170 µA (typ)
- 16-bit or 14-bit monotonic high-performance DAC
- 1.8-V supply: 0.15 V to 1.25 V, 0.2 V to 1.0 V
- 5-V supply: 0.3 V to 2.5 V, 0.4 V to 2.0 V
- 4-LSB INL at 16 bits
- 0.07% FSR (max) TUE from –40°C to +125°C
- 12-bit 3.84-kSPS ADC for advanced diagnostics
- Integrated 1.25-V reference at 10 ppm/°C
- Internal 1.2288-MHz oscillator with clock output
- Digital interfaces:
- Serial peripheral interface (SPI)
- Universal asynchronous receiver-transmitter (UART)
- Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
- Wide operating temperature: –55°C to +125°C
The 16-bit AFE88101 and 14-bit AFE78101 ( AFEx8101) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for sensor-transmitter applications.
The AFEx8101 devices include most of the components required to design a 4‑mA to 20‑mA, 2‑wire (loop-powered) sensor transmitter. In addition to the highly accurate DAC, these devices include a 10‑ppm/°C voltage reference and a diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power regulation are required.
The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a fail-safe state corresponding to a standard NAMUR output value or user-specified custom value, or both.
These devices operate from supplies as low as 1.71 V with a maximum quiescent current of 210 µA. The devices are specified over the temperature range of –40°C to +125°C, but are functional from –55°C to +125°C.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | AFEx8101 16-Bit and 14-Bit, Low-Power DACs With Voltage Reference and Diagnostic ADC for 4-mA to 20-mA Loop-Powered Applications datasheet | PDF | HTML | 20 Dec 2022 |
Analog Design Journal | 如何將理想二極體控制器作為太陽能應用 中的可擴展輸入旁路開關使用 | PDF | HTML | 27 Jun 2024 | |
Analog Design Journal | 태양광 애플리케이션에서 확장 가능한 입력 바이패스 스위치로 이상적인 다이 오드 컨트롤러를 사용하는 방법 | PDF | HTML | 27 Jun 2024 | |
Analog Design Journal | How to use an ideal diode controller as a scalable input bypass switch in solar applications | PDF | HTML | 28 May 2024 | |
Application brief | Ultra-Low-Power, Low-Voltage, 2-Wire, 4- to 20-mA Loop Transmitter Using AFE881H | PDF | HTML | 03 Mar 2023 | |
Functional safety information | AFE88101 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 22 Aug 2022 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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The AFE881H1 evaluation module (EVM) is a platform for evaluating the AFE881H1, which is a highly-integrated, high-accuracy, extremely low-power, 16-bit digital-to-analog converter (DAC) with voltage outputs designed for HART®-enabled sensor transmitter applications.
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Supported products & hardware
Products
Series voltage references
Precision ADCs
Biosensing AFEs
Integrated precision ADCs & DACs
High-speed ADCs (≥10 MSPS)
Precision DACs (≤10 MSPS)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
UQFN (RRU) | 24 | Ultra Librarian |
Ordering & quality
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- Material content
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- Ongoing reliability monitoring
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Support & training
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