V62/08628-02XE
4-Channel Quad ADC Pipelined 105Msps 14-bit Serial (1-Wire, 2-Wire)/LVDS 64-Pin VQFN EP T/R
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Part Number : V62/08628-02XE
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Package/Case : VQFN (RGC)-64
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Brands : Texas Instruments
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Components Categories : Analog to Digital Converters (ADC)
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Datesheet : V62/08628-02XE DataSheet (PDF)
Overview of V62/08628-02XE
The ADS6445/ADS6444 is a high performance 14 bit 125/105 MSPS quad channel A-D converter. Serial LVDS data outputs reduce the number of interface lines, resulting in a compact 64-pin QFN package (9 mm × 9 mm) that allows for high system integration density. The device includes 3.5 dB coarse gain option that can be used to improve SFDR performance with little degradation in SNR. In addition to the coarse gain, fine gain options also exist, programmable in 1 dB steps up to 6 dB.
The output interface is 2-wire, where each ADC data is serialized and output over two LVDS pairs. This makes it possible to halve the serial data rate (compared to a 1-wire interface) and restrict it to less than 1 Gbps easing receiver design. The ADS644X also includes the traditional 1-wire interface that can be used at lower sampling frequencies.
An internal phase lock loop (PLL) multiplies the incoming ADC sampling clock to derive the bit clock. The bit clock is used to serialize the 14 bit data from each channel. In addition to the serial data streams, the frame and bit clocks also are transmitted as LVDS outputs.
The LVDS output buffers have features such as programmable LVDS currents, current doubling modes and internal termination options. These can be used to widen eye openings and improve signal integrity, easing capture by the receiver.
The ADC channel outputs can be transmitted either as MSB or LSB first and 2s complement or straight binary.
The ADS644X has internal references, but also can support an external reference mode. The device is specified over –55°C to 125°C operating junction temperature range.
Key Features
- Maximum Sample Rate: 125 MSPS
- 14-Bit Resolution with No Missing Codes
- Simultaneous Sample and Hold
- 3.5-dB Coarse Gain and up to 6-dB Programmable
Fine Gain for SFDR/SNR Trade-Off - Serialized LVDS Outputs with Programmable
Internal Termination Option - Supports Sine, LVCMOS, LVPECL, LVDS Clock
Inputs and Amplitude Down to 400 mVPP - Internal Reference with External Reference Support
- No External Decoupling Required for References
- 3.3-V Analog and Digital Supply
- 64-pin QFN Package (9 mm × 9 mm)
- Feature Compatible Dual Channel Family
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Sample rate (max) (Msps) | 105 | Resolution (Bits) | 14 |
Number of input channels | 4 | Interface type | Serial LVDS |
Analog input BW (MHz) | 500 | Features | High Performance |
Rating | HiRel Enhanced Product | Peak-to-peak input voltage range (V) | 2 |
Power consumption (typ) (mW) | 1350 | Architecture | Pipeline |
SNR (dB) | 73.8 | ENOB (Bps) | 11.7 |
SFDR (dB) | 91 | Operating temperature range (°C) | -55 to 125 |
Input buffer | No |
Warranty & Returns
Warranty, Returns, and Additional Information
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