ADC 32 Delta-Sigma 3ksps 20-bit Serial 64-Pin NFBGA T/R, DDC232CGXGT, Texas Instruments

The DDC232 is a 20-bit, 32-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 32 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized. For each of the 32 inputs, the DDC232 provides a 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. Adjustable integration times range from 166µs to 1s, allowing currents from fAs to µAs to be continuously measured with outstanding precision. The DDC232 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-DDC232 system is minimal. The DDC232 uses a +5V analog supply and a +2.7V to +3.6V digital supply. Operating over the temperature range of 0°C to +70°C, the DDC232 BGA-64 package is offered in two versions: the DDC232C for low-power applications, and the DDC232CK when higher speeds are required.

Single-Chip Solution to Directly Measure 32 Low-Level Currents

High-Precision, True Integrating Function

Integral Linearity:
±0.025% of Reading ±1.0ppm of FSR

Very Low Noise: 5.3ppm of FSR

Low Power: 7mW/channel

Adjustable Full-Scale Range

Adjustable Speed

Data Rate up to 6kSPS
Integration Times as low as 166.5µs

Daisy-Chainable Serial Interface

In-Package Bypass Capacitors Simplify PCB Design

APPLICATIONS

CT Scanner DAS
Photodiode Sensors
X-Ray Detection Systems

Характеристики

Volt_supply_source	Analog and Digital
Eccn	EAR99
Sampling_rate	3 ksps
Volt_reference	External
Digital_supply_support	Yes
Architecture	Delta-Sigma
Resolution	19 Bit
Typical_power_dissipation	224 mW
Input_type	Current
Input_signal_type	Single-Ended
Бренд	Texas Instruments
Msl_level	3
Country_of_origin	United States
Number_of_analog_inputs	32
Lead_finish	Tin/Lead
Htsn	8542390001
Max_power_dissipation	288 mW
Max_processing_temp	240
Mounting	Surface Mount
Operating_temp	0 to 70 °C
Pin_count	64
Product_dimensions	8 x 8 x 1.01 mm
Schedule_b	8542390000
Specifications	http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=DDC232&&fileType=pdf
Supplier_package	NFBGA
Operating_supply_volt	4.75, 5 V, 5.25
Number_of_adcs	32
Digital_interface_type	Serial

Артикул: DDC232CGXGT

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