Analog-to-digital converter application circuit design analysis - circuit diagram reading every day (275)

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM
SMD aluminum electrolytic capacitor
L0504-Murata muRata common mode inductor 90Ω 150mA

An analog-to-digital converter, or A/D converter, or ADC for short, usually refers to an electronic component that converts an analog signal into a digital signal. A typical analog to digital converter is a digital signal that converts an input voltage signal into an output. This article describes the circuit principle of several analog-to-digital converter chips.

1, AD9280

The AD9280 device is a single-chip, 8-bit, 32 MSPS analog-to-digital converter (ADC) that introduces the AD9280's features, application range, reference design circuitry, and circuit analysis to help you reduce design time.

Introduction to AD9280:

The AD9280 is a single-chip, 8-bit, 32 MSPS analog-to-digital converter (ADC) that operates from a single supply and includes an on-chip sample-and-hold amplifier and voltage reference. It features a multi-stage differential pipeline architecture with data rates up to 32 MSPS and guaranteed no missing codes over the entire operating temperature range.

AD9280 features:

Pin compatible with the AD876-8

Power consumption: 95 mW (3 V power supply)

Operating voltage range: +2.7V to +5.5V

Differential Nonlinearity (DNL) error: 0.2 LSB

Power saving (sleep) mode

The internal block diagram of the AD9280:

Figure 1 shows the internal structure of the AD9280, showing the internal structure.

AD9280 Reference Design Circuit:

Figure 2 AD9280 typical application circuit

2, AD7541

The AD7541 device is a low cost, high performance 12-bit single-chip multiplying digital-to-analog converter that introduces the AD7541 features, application range, reference design circuitry, and circuit analysis to help you reduce design time.

Introduction to AD7541:

The AD7541A is a low cost, high performance 12-bit single-chip multiplying digital-to-analog converter. The device is fabricated on advanced low noise thin film CMOS technology and is available in standard 18-pin DIP and 20-lead surface mount packages. The AD7541A is functionally and pin-compatible with the industry-standard device, the AD7541, and has improved specifications and performance. In addition, the device design is improved to ensure that latch-up does not occur, so there is no need to output a Schottky diode.

AD7541 features:

Improved version of the AD7541

Complete four-quadrant multiplication

12-bit linearity (end point)

All devices are guaranteed to be monotonic

TTL/CMOS compatible

low cost

No need to protect Schottky diodes

Low logic input leakage

Block diagram of the internal structure of AD7541:

Figure 3 shows the internal structure of the AD7541, showing the internal structure.

AD7541 Reference Design Circuit:

Figure 4 AD7541 typical application circuit

3, AD7694

The AD7694 device is a 3-channel, low noise, low power, 24-bit sigma-delta ADC with an on-chip instrumentation amplifier that introduces the AD7694 features, application range, reference design circuitry, and circuit analysis to help reduce design time. .

Introduction to AD7694:

The AD7694 is a 16-bit, 250 kSPS, charge redistribution, successive approximation analog-to-digital converter (ADC) that operates from a single 2.7 V to 5.25 V supply (VDD). The device includes a very low power, high speed, 16-bit no-signature sampling ADC (Class B), an internal conversion clock, and an SPI-compatible serial interface port. It also integrates a low noise, wide bandwidth, and very short aperture delay. Sample and hold circuit. On the rising edge of CNV, the AD7694 samples the analog input voltage difference between IN+ and IN-, ranging from 0V to REF. The reference voltage (REF) is supplied externally and can be set to the maximum supply voltage.

AD7694 features:

16-bit resolution

Throughput: 250 kSPS

Integral Nonlinearity (INL): Maximum ± 4 LSB

Power consumption:

800 μA @ 5V/100 kSPS

540 μA @ 2.7V/100 kSPS

Pseudo-differential analog input range: 0 V to VREF (VREF up to VDD)

AD7694 application:

Battery powered device

Medical equipment

Mobile communication

Personal digital assistant

data collection

Instrumentation

Process control

AD7694 reference design circuit:

Figure 5 AD7694 typical application circuit

Edit Comment: This article mainly introduces the AD9280, AD7541 and AD7694 features, application range, reference design circuit and circuit analysis to help you shorten the design time. The AD9280 is a single-chip, 8-bit, 32 MSPS analog-to-digital converter (ADC) that operates from a single supply and includes an on-chip sample-and-hold amplifier and voltage reference. The AD7541A is a low cost, high performance 12-bit single-chip multiplying digital-to-analog converter. The AD7694 is a 16-bit, 250 kSPS, charge redistribution, successive approximation analog-to-digital converter (ADC) that operates from a single 2.7 V to 5.25 V supply (VDD).
Electronic enthusiast "Smart Industry Special", more quality content, download now
Smart Industry Special Issue

Smart Plug

Shenzhen Chaoran Technology Corp. , https://www.chaoran-remote.com

This entry was posted in on