AD7765BRUZ Single Channel A/D Converters by Analog Devices

Status: Production
Series: AD7765
RoHS: Compliant
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The AD7765 is a high performance, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC). It combines wide input bandwidth, high speed, and performance of 112 dB dynamic range at a 156 kHz output data rate. With excellent dc specifications, the converter is ideal for high speed data acquisition of ac signals where dc data is also required.Using the AD7765 eases front-end antialias filtering requirements, simplifying the design process significantly. The AD7765 offers pin-selectable decimation rates of 128× and 256×. Other features include an integrated buffer to drive the reference, as well as a fully differential amplifier to buffer and level shift the input to the modulator.An overrange alert pin indicates when an input signal exceeds the acceptable range. The addition of internal gain and internal overrange registers makes the AD7765 a compact, highly integrated data acquisition device requiring minimal peripheral components.The AD7765 also offers a low power mode, significantly reducing power dissipation without reducing the output data rate or available input bandwidth.The differential input is sampled at up to 40 MSPS by an analog modulator. The modulator output is processed by a series of low-pass filters. The external clock frequency applied to the AD7765 determines the sample rate, filter corner frequencies, and output word rate.The AD7765 device boasts a full band on-board FIR filter. The full stop-band attenuation of the filter is achieved at the Nyquist frequency. This feature offers increased protection from signals that lie above the Nyquist frequency being aliased back into the input signal bandwidth.The reference voltage supplied to the AD7765 determines the input range. With a 4 V reference, the analog input range is ±3.2768 V differential, biased around a common mode of 2.048 V. This common-mode biasing is achieved using the on-chip differential amplifier, further reducing the external signal conditioning requirements.The AD7765 is available in a 28-lead TSSOP package and is specified over the industrial temperature range of −40°C to +85°C.

Prices starting from US$16.36


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Logo for Analog Devices Analog Devices US$17.44
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Logo for element14 element14 US$18.46
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Logo for Richardson RFPD Richardson RFPD US$16.36
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Logo for Farnell Farnell US$17.60
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Features

High performance 24-bit Σ-Δ ADC
115 dB dynamic range at 78.125 kHz output data rate
112 dB dynamic range at 156 kHz output data rate
156 kHz maximum fully filtered output word rate
Pin-selectable oversampling rates of 128× and 256×
Low power mode
Flexible serial peripheral interface (SPI)
Fully differential modulator input
On-chip differential amplifier for signal buffering
On-chip reference buffer
Full band low-pass finite impulse response (FIR) filter
Overrange alert pin
Digital gain correction registers
Power-down mode
Synchronization of multiple devices via the SYNC pin
Daisy chaining

Alternative Descriptions

24Bit, 156ksps, 112dB Sigma De | Analog Devices
ADC, 24BIT, 156KSPS, SERIAL, TSSOP-28 | element14
CONVERTER - ADC | Richardson RFPD


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD7765BRUZ?

Additional datasheets, footprints and schematics for AD7765BRUZ are listed on our Part Details page. You can also find images and similar parts to AD7765BRUZ on this page.

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What category does AD7765BRUZ fall under?

The AD7765BRUZ is listed under Single Channel A/D Converters.

Can I view similar or alternative parts?

You can view similar parts to AD7765BRUZ when available in the Single Channel A/D Converters range under the specifications section at the bottom of the details page.

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Is the AD7765BRUZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices, element14, Richardson RFPD and Farnell have stock available or on a lead time for AD7765BRUZ.

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