DDC264

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Convertidor analógico a digital, 64 canales, entrada de corriente

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Hoja de datos

document-pdfAcrobat DDC264 64-Channel, Current-Input Analog-to-Digital Converter datasheet (Rev. D) (Inglés) PDF | HTML

DDC264

ACTIVO

Hoja de datos

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Detalles del producto

Number of input channels

64

Resolution (Bits)

20

Features

Computed Tomography (CT)

Operating temperature range (°C)

0 to 70

Interface type

Serial

Rating

Catalog

Number of input channels

64

Resolution (Bits)

20

Features

Computed Tomography (CT)

Operating temperature range (°C)

0 to 70

Interface type

Serial

Rating

Catalog

NFBGA (ZAW)

100

81 mm² (9 mm × 9 mm)

Single-Chip Solution to Directly Measure 64 Low-Level Currents
Proven High-Precision, True Integrating Architecture With 100% Charge Collection
Easy Upgrade for Existing DDC Family Applications
Very Low Power: 3 mW/channel
Extremely Linear: INL = ±0.025% of Reading ±1 ppm of FSR
Low Noise: 6.3 ppm of FSR
Adjustable Full-Scale Range
Adjustable Speed
- Data Rates up to 6 kSPS With 20-bit Performance
- Integration Times as low as 160 µs
Daisy-Chainable Serial Interface
In-Package Bypass Capacitors Simplify PCB Design
APPLICATIONS
- CT Scanner DAS
- Photodiode Sensors
- X-Ray Detection Systems

All other trademarks are the property of their respective owners

Single-Chip Solution to Directly Measure 64 Low-Level Currents
Proven High-Precision, True Integrating Architecture With 100% Charge Collection
Easy Upgrade for Existing DDC Family Applications
Very Low Power: 3 mW/channel
Extremely Linear: INL = ±0.025% of Reading ±1 ppm of FSR
Low Noise: 6.3 ppm of FSR
Adjustable Full-Scale Range
Adjustable Speed
- Data Rates up to 6 kSPS With 20-bit Performance
- Integration Times as low as 160 µs
Daisy-Chainable Serial Interface
In-Package Bypass Capacitors Simplify PCB Design
APPLICATIONS
- CT Scanner DAS
- Photodiode Sensors
- X-Ray Detection Systems

All other trademarks are the property of their respective owners

The DDC264 is a 20-bit, 64-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 64 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized.

For each of the 64 inputs, the DDC264 uses the proven dual switched integrator front-end. This configuration allows for continuous current integration: while one integrator is being digitized by the onboard A/D converter, the other is integrating the input current. This architecture provides both a very stable offset and a loss-less collection of the input current. Adjustable integration times range from 160 µs to 1 s, allowing currents from fAs to µAs to be continuously measured with outstanding precision.

The DDC264 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the digital overhead in a multi-DDC264 system is minimal.

The DDC264 uses a 5-V analog supply and a 2.7-V to 3.6-V digital supply. Bypass capacitors within the DDC264 package help minimize the external component requirements. Operating over the temperature range of 0°C to 70°C, the DDC264 100-pin NFBGA package is offered in two versions: the DDC264C for low-power applications, and the DDC264CK when higher speeds are required.

The DDC264 is a 20-bit, 64-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 64 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized.

For each of the 64 inputs, the DDC264 uses the proven dual switched integrator front-end. This configuration allows for continuous current integration: while one integrator is being digitized by the onboard A/D converter, the other is integrating the input current. This architecture provides both a very stable offset and a loss-less collection of the input current. Adjustable integration times range from 160 µs to 1 s, allowing currents from fAs to µAs to be continuously measured with outstanding precision.

The DDC264 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the digital overhead in a multi-DDC264 system is minimal.

The DDC264 uses a 5-V analog supply and a 2.7-V to 3.6-V digital supply. Bypass capacitors within the DDC264 package help minimize the external component requirements. Operating over the temperature range of 0°C to 70°C, the DDC264 100-pin NFBGA package is offered in two versions: the DDC264C for low-power applications, and the DDC264CK when higher speeds are required.

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Documentación principal	Tipo	Título	Opciones de formato	Descargar la versión más reciente en inglés	Fecha
*	Hoja de datos	DDC264 64-Channel, Current-Input Analog-to-Digital Converter datasheet (Rev. D)	PDF \| HTML		12/12/2016
	Analog Design Journal	Selecting a multichannel ultra-low-current measurement IC	PDF \| HTML		18/03/2022

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

DDC264EVM — Módulo de evaluación DDC264

The DDC264EVM provides an easy-to-use platform for evaluating the DDC264 charge digitizing A/D converters. A PC interface board and four DDC264 devices are included along with software that makes analysis and testing of these devices manageable.

Guía del usuario: PDF

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