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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- Product Details
- The AD7811 and AD7812 are high speed, low power, 10-bit A/D converters that operate from a single 2.7 V to 5.5 V supply. The devices contain a 2.3 µs successive approximation A/D converter, an on-chip track/hold amplifier, a 2.5 V on-chip reference and a high speed serial interface that is compatible with the serial interfaces of most DSPs (Digital Signal Processors) and microcontrollers. The user also has the option of using an external reference by connecting it to the VREF pin and setting the EXTREF bit in the control register. The VREF pin may be tied to VDD. At slower throughput rates the power-down mode may be used to automatically power down between conversions.
- The control registers of the AD7811 and AD7812 allow the input channels to be configured as single-ended or pseudo differential. The control register also features a software convert start and a software power-down. Two of these devices can share the same serial bus and may be individually addressed in a multipackage application by hardwiring the device address pin. The AD7811 is available in a small, 16-lead 0.3" wide, plastic dual-in-line package (mini-DIP), in a 16-lead 0.15" wide, small outline IC (SOIC) and in a 16-lead, Thin Shrink Small Outline Package (TSSOP). The AD7812 is available in a small, 20-lead 0.3" wide, plastic dual-in-line package (mini-DIP), in a 20-lead, small outline IC (SOIC) and in a 20-lead, Thin Shrink Small Outline Package (TSSOP).
- ### Features and Benefits
- 10-Bit ADC with 2.3 µs Conversion Time
- Four Single-Ended Inputs to
- Configure as Three Pseudo Differential
- Inputs with Respect to a Common, or as Two
- Independent Pseudo Differential Channels
- Onboard Track and Hold
- Onboard Reference 2.5 V ± 2.5%
- Operating Supply Range: 2.7 V to 5.5 V
- Specifications at 2.7 V–3.6 V and 5 V ± 10%
- DSP-/Microcontroller-Compatible Serial Interface
- High Speed Sampling and Automatic
- Power-Down Modes
- Package Address Pin on AD7811
- and AD7812 Allows Sharing of Serial
- Bus in Multipackage Applications
- Input Signal Range: 0 V to VREF
- Reference Input Range: 1.2 V to VDD
AD7811 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Active |
Order guide
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- Delivery date: usually 2 to 7 working days.
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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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