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AFE2256TDU +BOM

256-channel analog front end (AFE) for digital X-ray flat-panel detectors

Hersteller:

Texas Instruments, Inc
Herstellerteil #:

AFE2256TDU
Datenblatt:

AFE2256TDU Datenblatt (PDF)
Number Of Bits:

16
Number Of Channels:

256
Voltage - Supply, Analog:

1.85V, 3.3V
Base Product Number:

AFE2256

AFE2256TDU Allgemeine Beschreibung

The AFE2256 is a 256-channel, analog front-end (AFE) designed to suit the requirements of flat-panel detector (FPD)-based digital x-ray systems. The device includes 256 integrators , a programmable gain amplifier (PGA) for full-scale charge level selection, a correlated double sampler (CDS) with dual banking, and 256:4 analog multiplexers.

The device also features four 16-bit successive-approximation register (SAR) analog-to-digital converters (ADCs). Serial data from the ADCs are available in low-voltage differential signaling (LVDS) format.

The Nap and power-down modes enable substantial power saving that is especially useful in battery-powered systems.

To request a full datasheet or other design resources: request AFE2256

Hauptmerkmale

256 Channels
On-Chip, 16-Bit ADC
Photodiode Short Immunity
High Performance:
- Noise: 750 Electrons RMS
  (1.2-pC Input Charge Range)
- Low Correlated Noise
- Integral Nonlinearity:
  ±2 LSB with Internal 16-Bit ADC
- Scan Time:
  - < 20 µs to 204.8 µs
Integration:
- Six Selectable, Full-Scale Input Ranges:
  0.6 pC (Min) to 9.6 pC (Max)
- Internal Timing Generator (TG)
- Built-In Correlated Double Sampler
- Pipelined Integrate and Read for Improved
  Throughput: Allows Data Read During
  Integration
- Serial LVDS Output
Simple Power-Supply Scheme:
- AVDD1 = 1.85 V
- AVDD2 = 3.3 V
Low Power Consumption
Nap and Total Power-Down Mode
Custom Chip-On-Film (COF) Packages

Spezifikationen

Category	Integrated Circuits (ICs)Data AcquisitionAnalog Front End (AFE)	Series	-
Number of Bits	16	Number of Channels	256
Voltage - Supply, Analog	1.85V, 3.3V	Voltage - Supply, Digital	-
Mounting Type	-	Base Product Number	AFE2256
Number of input channels	256	Resolution (Bits)	16
Features	Internal Reference Buffer, Nap Mode, Power Down, X-ray	Interface type	SPI/LVDS
Operating temperature range (°C)	0 to 85	Rating	Catalog
feature-resolution		feature-minimum-single-supply-voltage-v
feature-power-supply-type		feature-minimum-dual-supply-voltage-v
feature-maximum-dual-supply-voltage-v		feature-packaging	Tray
feature-maximum-single-supply-voltage-v		feature-rad-hard
feature-pin-count	320	feature-cecc-qualified
feature-esd-protection	Yes	feature-escc-qualified
feature-military	No	feature-aec-qualified	No
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc	No	feature-svhc-exceeds-threshold	No

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