ADuM7801
新規設計に推奨25MHz Isolated ADC with Sigma-Delta Modulated Bit Stream Output
- 製品モデル
- 2
- 1Ku当たりの価格
- 最低価格:$3.27
製品情報
- 5MHz to 25MHz main clock input frequency
- 16 bits, no missing codes
- Full-scale analog input voltage range: ±320mV
- SNR: 88dB typical
- High isolation common-mode transient immunity: 200kV/μs minimum
- Offset drift vs. temperature: ±0.30μV/°C maximum
- Gain error drift vs. temperature: ±28ppm/°C maximum
- Integrated digital isolator
- Operating temperature range: −40°C to +125°C
- Wide-body SOIC
- 8-lead SOIC_IC
- Safety and regulatory approvals
- UL 1577 (pending)
- VISO = 5700V rms for 1minute
- IEC/EN/CSA 62368-1 (pending)
- IEC/CSA 61010-1 (pending)
- DIN EN IEC 60747-17 (VDE 0884-17) (pending)
- VIORM = 2121V peak
The ADuM7801 is a high-performance isolated analog-to-digital converter (ADC) with a second-order Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler ® technology. The device operates from a 4.0V to 5.5V power supply range (high-side supply voltage, VDD1) and accepts a pseudodifferential input signal of ±250mV (±320mV full-scale). The pseudodifferential input is ideally suited for shunt-resistor current monitoring in high voltage applications where galvanic isolation is required.
The analog input is continuously sampled by a high-performance analog modulator and converted to a pulse density modulation digital output stream with a data rate of up to 26MHz. The analog input can be reconstructed with an appropriate sinc3 digital filter to achieve an 88dB signal-to-noise ratio (SNR) at 97.6kSPS with a 256 decimation rate and a 25MHz input clock. The serial input and output operates from a 3V to a 5.5V supply (controller-side supply voltage, VDD2).
The serial interface is digitally isolated. High speed complementary metal-oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, results in the on-chip isolation providing outstanding performance characteristics, superior to alternatives such as optocoupler devices.
The ADuM7801 device is available in a 8-lead SOIC_IC package and has an operating temperature range of −40°C to +125°C.
APPLICATIONS
- Shunt current monitoring
- AC motor controls
- Power and solar inverters
- Wind turbine inverters
- Analog-to-digital and opto-isolator replacement
ドキュメント
データシート 1
ユーザ・ガイド 1
| 製品モデル | ピン/パッケージ図 | 資料 | CADシンボル、フットプリント、および3Dモデル |
|---|---|---|---|
| ADUM7801-8BRIZ | SOIC_IC | ||
| ADUM7801-8BRIZ-RL | SOIC_IC |
これは最新改訂バージョンのデータシートです。
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