AD7761BSTZ Simultaneous Sampling A/D Converters by Analog Devices

Simultaneous Sampling A/D Converters
Status: Production
Series: AD7761
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The AD7761 is an 8-channel, simultaneous sampling sigma-delta (Σ-Δ) analog-to-digital converter (ADC) with a Σ-Δ modulator and digital filter per channel, enabling synchronized sampling of ac and dc signals.The AD7761 achieves 97.7 dB dynamic range at a maximum input bandwidth of 110.8 kHz, combined with typical performance of ±1 LSB integral nonlinearity (INL), ±1 LSB offset error, and ±5 LSB gain error.The AD7761 user can trade off input bandwidth, output data rate, and power dissipation. Select one of three power modes to optimize the device for noise targets and power consumption. The flexibility of the AD7761 allows it to become a reusable platform for low power dc and high performance ac measurement modules.The AD7761 has three modes: fast mode (256 kSPS maximum, 110.8 kHz input bandwidth, 51.5 mW per channel), median mode (128 kSPS maximum, 55.4 kHz input bandwidth, 27.5 mW per channel) and low power mode (32 kSPS maximum, 13.8 kHz input bandwidth, 9.375 mW per channel).The AD7761 offers extensive digital filtering capabilities, such as a wideband, low ±0.005 dB pass-band ripple, antialiasing low-pass filter with sharp roll-off, and 105 dB attenuation at the Nyquist frequency.Frequency domain measurements can use the wideband linear phase filter. This filter has a flat pass band (±0.005 dB ripple) from dc to 102.4 kHz at 256 kSPS, from dc to 51.2 kHz at 128 kSPS, or from dc to 12.8 kHz at 32 kSPS.The AD7761 also offers sinc response via a sinc5 filter, a low latency path for low bandwidth, and low noise measurements.The wideband and sinc5 filters can be selected and run on a per channel basis.Within these filter options, the user can improve the dynamic range by selecting from decimation rates of ×32, ×64, ×128, ×256, ×512, and ×1024. The ability to vary the decimation filtering optimizes noise performance to the required input bandwidth.Embedded analog functionality on each ADC channel makes design easier, such as a precharge buffer on each analog input that reduces analog input current and a precharge reference buffer per channel reduces input current and glitches on the reference input terminals.The device operates with a 5 V AVDD1A and AVDD1B supply, a 2.25 V to 5.0 V AVDD2A and AVDD2B supply, and a 2.5 V to 3.3 V or 1.8 V IOVDD supply (see the 1.8 V IOVDD Operation section for specific requirements for operating at 1.8 V IOVDD).The device requires an external reference; the absolute input reference voltage range is 1 V to AVDD1 − AVSS.For the purposes of clarity within this data sheet, the AVDD1A and AVDD1B supplies are referred to as AVDD1 and the AVDD2A and AVDD2B supplies are referred to as AVDD2. For the negative supplies, AVSS refers to the AVSS1A, AVSS1B, AVSS2A, AVSS2B, and AVSS pins.The specified operating temperature range is −40°C to +105°C. The device is housed in a 10 mm × 10 mm 64-lead LQFP package with a 12 mm × 12 mm printed circuit board (PCB) footprint.Throughout this data sheet, multifunction pins, such as XTAL2/MCLK, are referred to either by the entire pin name or by a single function of the pin, for example MCLK, when only that function is relevant.

Where to Buy

Prices starting from US$9.95

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$9.95
444
in stock
 Buy Now
Logo for Newark Electronics
Newark Electronics
from US$19.14
48
in stock
 Buy Now
Logo for element14
element14
from US$15.84
48
in stock
 Buy Now
Logo for Farnell
Farnell
from US$14.79
48
in stock
 Buy Now
Logo for Richardson RFPD
Richardson RFPD
from US$14.06
-
Buy Now

Features

Precision ac and dc performance
8-channel simultaneous sampling
256 kSPS ADC ODR per channel
97.7 dB dynamic range
110.8 kHz input bandwidth (−3 dB BW)
−120 dB THD, typical
±1 LSB INL, ±1 LSB offset error, ±5 LSB gain error
Optimized power dissipation vs. noise vs. input bandwidth
Selectable power, speed, and input bandwidth
Fast (highest speed): 110.8 kHz BW, 51.5 mW per channel
Median (half speed): 55.4 kHz BW, 27.5 mW per channel
Low power (lowest power): 13.8 kHz BW, 9.375 mW per channel
Input BW range: dc to 110.8 kHz
Programmable input bandwidth/sampling rates
CRC error checking on data interface
Daisy-chaining
Linear phase digital filter
Low latency sinc5 filter
Wideband brick wall filter: ±0.005 dB ripple to 102.4 kHz
Analog input precharge buffers
Power supply
AVDD1 = 5 V, AVDD2 = 2.25 V to 5.0 V
IOVDD = 2.5 V to 3.3 V or IOVDD = 1.8 V
64-lead LQFP package, no exposed pad
Temperature range: −40°C to +105°C

Alternative Descriptions

256ksps 8 ch wideband 16B SD-A | Analog Devices
Adc, 16Bit, 256Ksps, Lqfp-64 | Newark Electronics
ADC, 16BIT, 256KSPS, LQFP-64 | element14
CONVERTER - ADC | Richardson RFPD

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD7761BSTZ?

Additional datasheets, footprints and schematics for AD7761BSTZ are listed on our Part Details page. You can also find images and similar parts to AD7761BSTZ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD7761BSTZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD7761BSTZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD7761BSTZ fall under?

The AD7761BSTZ is listed under Simultaneous Sampling A/D Converters.

Can I view similar or alternative parts?

You can view similar parts to AD7761BSTZ when available in the Simultaneous Sampling A/D Converters range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD7761BSTZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD7761BSTZ RoHS compliant?

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

Which authorised distributors for AD7761BSTZ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and Richardson RFPD have stock available or on a lead time for AD7761BSTZ.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for AD7761BSTZ often in real-time on the comparison pages.

What if I can't find stock of AD7761BSTZ?

You can fill out our help required form which you can use to request a quote for AD7761BSTZ from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay