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ANALOG DEVICES AD7768-4BSTZ Analog to Digital Converter, 4CH, Sigma-Delta, 24Bit, 256KSPS, Single, 2V, 5.5V, LQFP

Hersteller : Analog Devices, Inc
Verpackung/Behälter : 64-LQFP
Produkt der Kategorien : Data Acquisition - Analog to Digital Converters (ADC)
Datasheet: AD7768-4BSTZ Datasheet (PDF)
RoHs Status: Pb-free Halide free
Lagerbestand: 1000


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AD7768-4BSTZ Beschreibung

The AD7768/AD7768-4BSTZ are 8-channel and 4-channel,simultaneous sampling sigma-delta (Σ-Δ) analog-to-digitalconverters (ADCs), respectively, with a Σ-Δ modulator and digital filter per channel, enabling synchronized sampling of ac and dc signals.

The AD7768/AD7768-4BSTZ achieve 108 dB dynamic range at amaximum input bandwidth of 110.8 kHz, combined with typicalperformance of ±2 ppm integral nonlinearity (INL), ±50 μVoffset error, and ±30 ppm gain error.

The AD7768/AD7768-4BSTZ user can trade off input bandwidth,output data rate, and power dissipation, and select one of threepower modes to optimize for noise targets and power consumption. The flexibility of the AD7768/AD7768-4BSTZ allows them to become reusable platforms for low power dc and highperformance ac measurement modules.

The AD7768/AD7768-4BSTZ have 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 AD7768/AD7768-4BSTZ offer extensive digital filteringcapabilities, such as a wideband, low ±0.005 dB pass-bandripple, 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 AD7768/AD7768-4BSTZ also offer sinc response via a sinc5 filter, a low latency path for low bandwidth, and low noisemeasurements. The wideband and sinc5 filters can be selected and run on a per channel basis.

Within these filter options, the user can improve the dynamicrange 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 inputbandwidth.

Embedded analog functionality on each ADC channel makesdesign easier, such as a precharge buffer on each analog inputthat reduces analog input current and a precharge reference buffer per channel reduces input current and glitches on thereference 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 Operationsection for specific requirements for operating at 1.8 V IOVDD).

The device requires an external reference; the absolute inputreference voltage range is 1 V to AVDD1 − AVSS.


  • Precision ac and dc performance
  • 8-/4-channel simultaneous sampling
    • 256 kSPS maximum ADC ODR per channel
    • 108 dB dynamic range
    • 110.8 kHz maximum input bandwidth (−3 dB BW)
    • −120 dB THD, typical
    • ±2 ppm of full-scale range (FSR) integral nonlinearity (INL), ±50 μV offset error, ±30 ppm 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 = 5.0 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


  • Data acquisition systems: USB/PXI/Ethernet
  • Instrumentation and industrial control loops
  • Audio test and measurement
  • Vibration and asset condition monitoring
  • 3-phase power quality analysis
  • Sonar
  • High precision medical electroencephalogram (EEG)/electromyography (EMG)/electrocardiogram (ECG)

AD7768-4BSTZ Pinout
(Bild: Pinout)

AD7768-4BSTZ Block Diagram
(Bild: Diagram)

Technische Parameter

  • Number of Bits
  • 24
  • Sampling Rate (Per Second)
  • 256k
  • Number of Inputs
  • 4
  • Input Type
  • Differential
  • Data Interface
  • SPI
  • Configuration
  • ADC
  • Number of A/D Converters
  • 4
  • Architecture
  • Sigma-Delta
  • Reference Type
  • External
  • Voltage Supply, Analog
  • 2V ~ 5.5V
  • Features
  • Simultaneous Sampling
  • Operating Temperature
  • -40??C ~ 105??C
  • Package / Case
  • 64-LQFP
  • Supplier Device Package
  • 64-LQFP (10x10)
  • Mounting Type
  • Surface Mount

AD7768-4BSTZ Datasheet

AD7768-4BSTZ Verwandte besondere

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that AD7768-4BSTZ is the original manufacturer or agent of ADI?
We have a professional business development department to strictly test and verify the qualifications of ADI original manufacturers and agents. All ADI suppliers must pass the qualification review before they can publish their AD7768-4BSTZ devices; we pay more attention to the channels and quality of AD7768-4BSTZ products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of AD7768-4BSTZ chips? Including ADI original factory information, Data Acquisition - Analog to Digital Converters (ADC) application, AD7768-4BSTZ pictures?
You can use Jotrin's intelligent search engine, or filter by Precision A/D Converters ; Simultaneous Sampling A/D Converters category, or find it through Analog Devices, Inc Information page.
Q: Are the ADI's AD7768-4BSTZ price and stock displayed on the platform accurate?
The ADI's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for AD7768-4BSTZ, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of AD7768-4BSTZ?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD77684BSTZ we delivered, we will accept the replacement or return of the AD7768-4BSTZ only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of AD7768-4BSTZ.
(3)The AD7768-4BSTZ is unused and only in the original unpacked packaging.
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(1)Inform us within 90 days
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Analog Devices, Inc

Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...

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