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Digital-to-Analog Converter (DAC) Chips Specifications

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General Specifications




   Architecture       
   Your choices are...
 
      
 
   R-2R
 
     Digital-to-analog converters use a resistive ladder network to produce the transfer function of the DAC.  Each segment of the ladder consists on a resistor of value R and a resistor of value 2R.
 
   Resistor String
 
     A DAC that uses string of resistors, each of value R, to produce the conversion.
 
   Current-Steering
 
     A type of DAC architecture that uses an internal current source to deliver the output current.
 
   Sigma-Delta
 
     The Sigma-Delta ADC architecture takes a fundamentally different approach from those outlined above. In its most basic form, a sigma-delta converter consists of an integrator, a comparator, and a single-bit DAC. The output of the DAC is subtracted from the input signal. The resulting signal is then integrated, and the integrator output voltage is converted to a single-bit digital output (1 or 0) by the comparator. The resulting bit becomes the input to the DAC, and the DACs output is subtracted from the ADC input signal, etc. This closed-loop process is carried out at a very high "over sampled" rate. The digital data coming from the ADC is a-stream of ones and zeros, and the value of the signal is proportional to the density of digital ones coming from the comparator. This bit stream data is then digitally filtered and decimated to result in a binary-format output.
 
   Other
 
     Other unlisted, proprietary or specialized converters.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Interface Type       
   Your choices are...
 
      
 
   Serial
 
     The output interface is a general serial port.
 
   Parallel
 
     The output interface is a general parallel port.
 
   SPI
 
     The output interface is an SPI (Serial Peripheral Interface) port. SPI was developed by Motorola.
 
   I2C
 
     Inter-Integrated Circuit (I2C) bus is a two-wire, low to medium speed, communication bus developed by Philips Semiconductors in the early 1980's.
 
   Microwire
 
     MICROWIRETM is a serial protocol created by National Instruments.
 
   Other
 
     Other unlisted, specialized, or proprietary interface type.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Output Type       
   Your choices are...
 
      
 
   Voltage
 
     The DAC produces a voltage as the analog output.
 
   Current
 
     The DAC produces a current as the analog output.
 
   Other
 
     Other unlisted output types.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Number of Outputs
 
     The total number of output channels available in the converter.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
Performance




   Resolution
 
     When an analog signal is digitized, it is represented by a finite number of discrete voltage levels. The resolution is the number of discrete levels that are used to represent the signal. To more accurately replicate the analog signal, the resolution must be increased. Resolution is usually defined in bits. Using converters with higher resolutions will reduce the quantization error.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Settling Time
 
     Settling Time is the time required for the output to approach a final value within the limits of a defined error band, for a step change in the digital input.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   DNL
 
     The Differential Nonliniarity (DNL) error is defined as the difference between the ideal and the measured code transitions for successive codes for an ADC or the difference between the ideal and the measured output value between successive DAC codes.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   INL
 
     The amount of deviation of the measured transfer function of an analog-to-digital converter (ADC) or a digital-to-analog converter (DAC) from the ideal transfer function (defined as a straight line drawn from zero to full scale). This error is sometimes referred to as static linearity or absolute linearity.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Power Dissipation
 
     The maximum power in watts dissipated by the device.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Reference Access       
   Your choices are...
 
      
 
   Internal
 
     The voltage reference is an internal power supply.
 
   External
 
     The user supplies the voltage reference.
 
   Other
 
     Other unlisted or proprietary reference access method.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Operating Temperature:
 
     This is the full-required range of ambient operating temperature.
 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
Packaging Characteristics




   IC Package Type       
   Your choices are...
 
      
 
   PBGA
 
     Plastic ball-grid array (PBGA) is the general terminology for the BGA package adopting plastic (epoxy molding compound) as the encapsulation. According to JEDEC standard, PBGA refers to an overall thickness of over 1.7mm.
 
   TBGA
 
     Tape ball-grid array (TBGA) uses a fine, polyimide substrate and provides good thermal performance with high pin counts.
 
   CSP
 
     Chip scale package or chip size package (CSP) has an area that is no more than 20% larger than the built-in die. CSP is compact for second level packaging efficiency and encapsulated for second level reliability. CSP is superior to both direct-chip-attach (DCA) and chip-on-board (COB) technologies. CSP is used in a variety of integrated circuits (IC), including radio frequency ICs (RFIC), memory ICs, and communication ICs.  
 
   UCSP
 
     Ultra chip scale package (UCSP).
 
   FLGA
 
     Fine-pitch land-grid array (FLGA) is extremely compact and lightweight, making it suitable for miniature disc drives and digital cameras.
 
   QFP
 
     Quad flat packages (QFP) contain a large number of fine, flexible, gull wing shaped leads. Lead width can be as small as 0.16 mm. Lead pitch is 0.4 mm. QFPs provide good second-level reliability and are used in processors, controllers, ASICs, DSPs, gate arrays, logic, memory ICs, PC chipsets, and other applications. 
 
   LQFP
 
     Low quad flat package (LQFP).
 
   TQFP
 
     Thin quad flat package (TQFP).
 
   SOP
 
     Small outline package (SOP).
 
   SOIC
 
     Small outline integrated circuit (SOIC).
 
   TSOP Type I
 
     Thin small outline package (TSOP), Type I is a DRAM package that uses gull wing shaped leads on both sides. TSOP DRAM mounts directly on the surface of the printed circuit board. The advantage of the TSOP package is that it is one-third the thickness of an SOJ package. TSOP components are commonly used in small outline DIMM and credit card memory applications.
 
   TSOP Type II
 
     Thin small outline package (TSOP), Type II is a DRAM package that uses gull wing shaped leads on both sides. TSOP DRAM mounts directly on the surface of the printed circuit board. The advantage of the TSOP package is that it is one-third the thickness of an SOJ package. TSOP components are commonly used in small outline DIMM and credit card memory applications.
 
   SSOP
 
     Shrink small outline package (SSOP).
 
   TSSOP
 
     Thin shrink small outline L-leaded package (TSSOP).
 
   VSSOP
 
     Very thin shrink small outline package (VSSOP).
 
   TVSOP
 
     Thin very small outline package (TVSOP).
 
   SOJ
 
     Small outline J-lead (SOJ) is a common form of surface-mount DRAM packaging. It is a rectangular package with J-shaped leads on the two long sides of the device.
 
   HSOF
 
     Small outline flat-leaded package with heat sink (HSOF).
 
   PLCC
 
     Plastic leaded chip carrier (PLCC).
 
   LCCC
 
     Leadless ceramic chip carrier (LCCC).
 
   DIP
 
     Dual in-line package (DIP) is a type of DRAM component packaging. DIPs can be installed either in sockets or permanently soldered into holes extending into the surface of the printed circuit board.
 
   CDIP
 
     Ceramic dual in-line package (CDIP) consists of two pieces of dry pressed ceramic surrounding a "DIP formed" lead frame. The ceramic / LF / ceramic system is held together hermetically by frit glass reflowed at temperatures between 400° - 460° centigrade.
 
   PDIP
 
     Plastic dual in-line package (PDIP) is widely used for low cost, hand-insertion applications including consumer products, automotive devices, logic, memory ICs, micro-controllers, logic and power ICs, video controllers commercial electronics and telecommunications.
 
   SIP
 
     Single in-line package (SIP).
 
   SDIP
 
     Shrink dual in-line package (SDIP).
 
   SZIP
 
     Shrink zigzag in-line package (SZIP).
 
   Other
 
     Other unlisted, specialized, or proprietary IC packages.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Production Status       
   Your choices are...
 
      
 
   Full Production
 
     Devices are currently being manufactured.
 
   Discontinued
 
     Devices are no longer available from the manufacturer, but may still be found in the supply chain.
 
   In Development
 
     Devices are in development and not yet available.
 
   New Product
 
     Devices are new products that have been announced by the manufacturer. 
 
   Other
 
     Other unlisted production status.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Screening Level       
   Your choices are...
 
      
 
   Commercial
 
     Devices support a temperature range and feature mechanical and electrical specifications that are suitable for commercial applications.
 
   Industrial
 
     Devices support a temperature range and feature mechanical and electrical specifications that are suitable for industrial applications.
 
   Military
 
     Devices support a temperature range and feature mechanical and electrical specifications that are suitable for military applications.
 
   Other
 
     Other unlisted screening levels.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Packing Method       
   Your choices are...
 
      
 
   Tape Reel
 
     Components are packed in tape reel assemblies that include a carrier tape with embossed cavities for storing individual components. A cover tape seals the carrier tape in place. This composite tape is then wound on a reel that is placed in a corrugated shipping box for transport and delivery. Customers unpack the reels and load them into industry-standard, pick-and-place board assembly equipment. Tape and reel assemblies provide component isolation and are designed for surface mount packages such as quad flat package (QFP) and thin quad flat package (TQFP).   

Typically, carrier tape is made from a polystyrene (PS) or PS-laminate film with a uniform film thickness between 0.2 mm to 0.4 mm. Carrier tape design is defined largely by component length, width, and thickness. Cover tape is made from a polyethylene teraphthalate (PET) film or film laminate with an adhesive applied to the underside of the film. This adhesive is usually heat and pressure sensitive to ensure a positive, consistent seal between the carrier tape and the cover tape. The reels that contain the composite tape are typically made of polystyrene and have one, two, or three parts. Reel dimensions meet EIA-481-1, EIA-481-2, and EIA-481-3 standards.
 
   Tray / Rail
 
     Components are packed in trays (rails) that are made of carbon-powder or fiber materials and molded into rectangular outlines that contain matrices of uniformly spaced pockets. These containers protect components during shipping and provide proper component location and orientation for use with industry-standard, pick-and-place board assembly equipment. Trays are designed for components for that have leads on four sides and that require component lead isolation during shipping, handling, or processing. For example, quad flat package (QFP) and thin quad flat package (TQFP) components are often shipped in trays.

To facilitate shipping and handling, trays are stacked and bound together in standard configurations. To provide rigidity, an empty cover tray is added to the top of the load. Typical stacking configurations consist of five full trays and one cover tray, and ten full trays and one cover tray. Customer requirements determine whether trays are shipped in single or multiple stacks.
 
   Shipping Tube / Stick Magazine
 
     Components are packed in shipping tubes or stick magazines that are made of rigid polyvinylchloride (PVC) and extruded in industry-standard sizes. These containers protect components during shipping and provide proper component location and orientation for use with industry-standard, pick-and-place board assembly equipment. 

To facilitate shipping and handling, shipping tubes and stick magazines are usually loaded into intermediate containers such as boxes or bags to form standard quantities. Intermediate-level packing quantities for shipping tubes and stick magazines often vary by pin count and package type.
 
   Bulk Pack
 
     Components are distributed as individual parts.
 
   Other
 
     Other unlisted packing methods.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Pin Count
 
     The number of pins in package.
 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
Features




   Rail-to-Rail Output
 
     The output voltage swing is from the negative to the positive value of the reference voltage.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Single Supply
 
     The chip can operate with only one supply.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   On-Chip ESD Protection
 
     The chip has embedded radiation protection.
 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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