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AD7715 Datasheet PDF

Part Series:
AD7715 Series
Category:
-
Description:
3V/5V, 450A, 16Bit Sigma-Delta ADC
Updated Time: 2023/01/13 02:33:35 (UTC + 8)

AD7715 Datasheet PDF -

42 Pages
ADI
Analog to Digital Converters - ADC 3/5V 450uA 16Bit
42 Pages
ADI
ANALOG DEVICES AD7715ARUZ-3 Analogue to Digital Converter, 16Bit, 500 SPS, Single, 3V, 3.6V, TSSOP
42 Pages
ADI
3V/5V, 450uA 16Bit, Sigma-Delta ADC
42 Pages
ADI
Analog to Digital Converters - ADC 3/5V 450uA 16Bit
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ANALOG DEVICES AD7715ANZ-5 Analog to Digital Converter, 16Bit, 500 SPS, Single, 4.75V, 5.25V, DIP
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ANALOG DEVICES AD7715ANZ-3 Analogue to Digital Converter, 16Bit, 19.2KSPS, Single, 3V, 5.25V, DIP
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ADI
ANALOG DEVICES AD7715AN-5 Analog to Digital Converter, 16Bit, 500 SPS, Single, 4.75V, 5.25V, DIP
41 Pages
ADI
3V/5V, 450uA 16Bit, Sigma-Delta ADC
41 Pages
ADI
3V/5V, 450μA, 16Bit, Sigma-Delta ADC
41 Pages
ADI
3V/5V, 450μA, 16Bit, Sigma-Delta ADC
41 Pages
ADI
3V/5V, 450 muA 16Bit, Sigma-Delta ADC
41 Pages
ADI
Analog to Digital Converters - ADC 3/5V 450uA 16Bit
41 Pages
ADI
Analog to Digital Converters - ADC 3/5V 450uA 16Bit
41 Pages
ADI
3V/5V, 450 muA 16Bit, Sigma-Delta ADC
41 Pages
ADI
3V/5V, 450uA 16Bit, Sigma-Delta ADC
40 Pages
ADI
3V/5V, 450A, 16Bit Sigma-Delta ADC

AD7715 - ADI Function Overview

Product Details
The AD7715 is a complete analog front end for low frequency measurement applications. The part can accept low level input signals directly from a transducer and outputs a serial digital word. It employs a Σ-Δ conversion technique to realize up to 16 bits of no missing codes performance. The input signal is applied to a proprietary programmable gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter. The first notch of this digital filter can be programmed via the on-chip control register allowing adjustment of the filter cutoff and output update rate.
The AD7715 features a differential analog input as well as a differential reference input. It operates from a single supply (3 V or 5 V). It can handle unipolar input signal ranges of 0 mV to 20 mV, 0 mV to 80 mV, 0 V to 1.25 V and 0 V to 2.5 V. It can also handle bipolar input signal ranges of ±20 mV, ±80 mV, ±1.25 V and ±2.5 V. These bipolar ranges are referenced to the negative input of the differential analog input. The AD7715 thus performs all signal conditioning and conversion for a single channel system.
The AD7715 is ideal for use in smart, microcontroller, or DSP-based systems. It features a serial interface that can be configured for three-wire operation. Gain settings, signal polarity, and update rate selection can be configured in software using the input serial port. The part contains self-calibration and system calibration options to eliminate gain and offset errors on the part itself or in the system.
CMOS construction ensures very low power dissipation, and power-down mode reduces the standby power consumption to 50 μW typical. The part is available in a 16-lead, 0.3 inch-wide, plastic dual-in-line package (PDIP) as well as a 16-lead 0.3 inch wide small outline (SOIC_W) package and a 16-lead TSSOP package.
Product Highlights
1. The AD7715 consumes less than 450 μA in total supply current at 3 V supplies and 1 MHz master clock, making it ideal for use in low-power systems. Standby current is less than 10 μA.
2. The programmable gain input allows the AD7715 to accept input signals directly from a strain gage or transducer removing a considerable amount of signal conditioning.
3. The AD7715 is ideal for microcontroller or DSP processor applications with a three-wire serial interface reducing the number of interconnect lines and reducing the number of optocouplers required in isolated systems. The part contains on-chip registers which allow software control over output update rate, input gain, signal polarity, and calibration modes.
4. The part features excellent static performance specifications with 16-bits no missing codes, ±0.0015% accuracy, and low rms noise (<550 nV). Endpoint errors and the effects of temperature drift are eliminated by on-chip calibration options, which remove zero-scale and full-scale errors.
### Features and Benefits
Charge-balancing ADC
16-bits no missing codes
0.0015% nonlinearity
Programmable gain front end
Gains of 1, 2, 32 and 128
Differential input capability
Three-wire serial interface
SPI-, QSPI™-, MICROWIRE™-, and DSP-compatible
Ability to buffer the analog input
3 V (AD7715-3) or 5 V (AD7715-5) operation
Low supply current: 450 μA maximum @ 3 V supplies
Low-pass filter with programmable output update
16-lead SOIC/PDIP/TSSOP
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