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- AD7770ACPZ - ADI
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Manufacturer:ADI
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ManyChip's Part#:MC1890929
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Category:Analog to Digital, ADC IC
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Package:LFCSP-64
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Datasheet:Datasheet 3D Model
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Description:ANALOG DEVICES AD7770ACPZ Analog to Digital Converter, 8CH, Sigma-Delta, 24Bit, 32KSPS, Single, 2.2V, 3.6V, LFCSP
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Stock Locations:
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Availability:256 pcs In Stock
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MOQ:1 pcs
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Unit Price:$ 6.9
Updated at 02/11/2025 10:30:15(UTC+8)
Certifications
ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.
Description
- Product Details
- The AD7770 is an 8-channel, simultaneous sampling ADC. Eight full sigma-delta (Σ-Δ) ADCs are on chip. The AD7770 provides a low input current to allow direct sensor connection. Each input channel has a programmable gain stage allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor outputs into the full-scale ADC input range, maximizing the dynamic range of the signal chain. The AD7770 accepts a VREF voltage from 1 V up to 3.6 V.
- The analog inputs accept unipolar (0 V to VREF) or true bipolar (±VREF/2) analog input signals with 3.3 V or ±1.65 V analog supply voltages, respectively for PGAGAIN = 1. The analog inputs can be configured to accept true differential, pseudo differential, or single-ended signals to match different sensor output configurations.
- Each channel contains a PGA, an ADC modulator and a sinc3, low latency digital filter. An SRC is provided to allow fine resolution control over the AD7770 ODR. This control can be used in applications where the ODR resolution is required to maintain coherency with 0.01 Hz changes in the line frequency. The SRC is programmable through the serial port interface (SPI). The AD7770 implements two different interfaces: a data output interface and SPI control interface. The ADC data output interface is dedicated to transmitting the ADC conversion results from the AD7770 to the processor. The SPI writes to and reads from the AD7770 configuration registers and for the control and reading of data from the SAR ADC. The SPI can also be configured to output the Σ-Δ conversion data.
- The AD7770 includes a 12-bit SAR ADC. This ADC can be used for AD7770 diagnostics without having to decommission one of the Σ-Δ ADC channels dedicated to system measurement functions. With the use of an external multiplexer, which can be controlled through the three general-purpose input/output pins (GPIOs), and signal conditioning, the SAR ADC can validate the Σ-Δ ADC measurements in applications where functional safety is required. In addition, the AD7770 SAR ADC includes an internal multiplexer to sense internal nodes.
- The AD7770 contains a 2.5 V reference and reference buffer. The reference has a typical temperature coefficient of 10 ppm/°C.
- The AD7770 offers two modes of operation: high resolution mode and low power mode. High resolution mode provides a higher dynamic range while consuming 10.75 mW per channel; low power mode consumes just 3.37 mW per channel at a reduced dynamic range specification.
- The specified operating temperature range is −40°C to +105°C, although the device is operational up to +125°C.
- Applications
- Protection relays
- General-purpose data acquisition
- Industrial process control
- ### Features and Benefits
- 8-channel, 24-bit simultaneous sampling analog-to-digital converter (ADC)
- Single-ended or true differential inputs
- Programmable gain amplifier (PGA) per channel (gains of 1, 2, 4, and 8)
- Low dc input current
- ±4 nA (differential) and ±8 nA (single-ended)
- Up to 32 kSPS output data rate (ODR) per channel
- Programmable ODRs and bandwidth
- Sample rate converter (SRC) for coherent sampling
- Sampling rate resolution up to 15.2 × 10−6 SPS
- Low latency sinc3 filter path
- Adjustable phase synchronization
- Internal 2.5 V reference
- Two power modes optimizing power dissipation and performance: high resolution mode and low power mode
- Low resolution successive approximation register (SAR) ADC for system and chip diagnostics
- Power supply
- Bipolar (±1.65 V) or unipolar (3.3 V) supplies
- Digital input/output (I/O) supply: 1.8 V to 3.6 V
- Performance temperature range: −40°C to +105°C
- Functional temperature range: −40°C to +125°C
- Performance
- Combined ac and dc performance
- 103 dB dynamic range at 32 kSPS in high resolution mode
- −109 dB total harmonic distortion (THD)
- ±9 ppm of FSR integral nonlinearity (INL)
- ±15 µV offset error
- ±0.1% FS gain error
- ±10 ppm/°C typical temperature coefficient
AD7770ACPZ Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Surface Mount |
| Number of Pins | 64 Pin |
| Case/Package | LFCSP-64 |
| Supply Voltage (DC) | 2.20V (min) |
| Number of Positions | 64 Position |
| Number of Bits | 24 Bit |
| Power Dissipation | 117 mW |
| Sample Rate | 32 ksps |
| Number of ADCs | 8 ADC |
| Number of Inputs | 8 Input |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Power Dissipation (Max) | 136 mW |
| Number of Input Channels | 8 Channel |
| Supply Voltage (Max) | 3.6 V |
| Supply Voltage (Min) | 2.2 V |
| Show | |
| Operating Temperature | -40℃ ~ 125℃ |
| Product Lifecycle Status | Active |
| Packaging | Each |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
| REACH SVHC Compliance Edition | 2016/06/20 |
| ECCN Code | EAR99 |
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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