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| 型號(hào)： | 5962-8967201LX |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 12-BIT DAC, CDIP24 |
| 封裝： | 0.300 INCH, GLASS SEALED, CERDIP-24 |
| 文件頁(yè)數(shù)： | 14/16頁(yè) |
| 文件大?。?/td> | 500K |
| 代理商： | 5962-8967201LX |
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DAC8222
–7–
REV. C
Figure 18. Burn-In Circuit
PARAMETER DEFINITIONS
RESOLUTION (n)
The resolution of a DAC is the number of states (2
n) into which
the full-scale range (FSR) is divided (or resolved); where n is
equal to the number of bits.
RELATIVE ACCURACY (INL)
Relative accuracy, or integral nonlinearity, is the maximum de-
viation of the analog output (from the ideal) from a straight line
drawn between the end points. It is expressed in terms of least
significant bit (LSB), or as a percent of full scale.
DIFFERENTIAL NONLINEARITY (DNL)
Differential nonlinearity is the worst case deviation of any adja-
cent analog output from the ideal 1 LSB step size. The devia-
tion of the actual “step size” from the ideal step size of 1 LSB is
called the differential nonlinearity error or DNL. DACs with
DNL greater than
±1 LSB may be nonmonotonic ±1/2 LSB
INL guarantees monotonicity and
±1 LSB maximum DNL.
GAIN ERROR (GFSE)
Gain error is the difference between the actual and the ideal
analog output range, expressed as a percent of full-scale or in
terms of LSB value. It is the deviation in slope of the DAC
transfer characteristic from ideal.
See Orientation in Digital-to-Analog Converters Section of the
current data book, for additional parameter definitions.
GENERAL CIRCUIT DESCRIPTION
CONVERTER SECTION
The DAC8222 contains four 12-bit registers (two input regis-
ters and two DAC registers), two highly stable thin-film R-2R
resistor ladder networks, and interface control logic circuitry.
Also included are 24 single-pole, double-throw, NMOS transis-
tor current switches.
Figure 19. Simplified Single DAC Circuit Configuration.
(Switches Are Shown for All Digital Inputs at Zero)
Figure 20. N-Channel Current Steering Switch
Figure 19 shows a simplified circuit for the R-2R ladder network
and transistor switches for one DAC. R is typically 11 k
. The
transistor switches are binarily scaled in size to maintain a con-
stant voltage drop across each switch. Figure 20 shows a single
NMOS transistor switch.
The binary-weighted currents are switched between IOUT and
AGND by the N-channel MOS transistor switches. The selec-
tion between IOUT and AGND is determined by the digital input
code. It is important to note here that the voltage difference
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相關(guān)代理商/技術(shù)參數(shù) |
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| 5962-8967701CA | 制造商:Linear Technology 功能描述:AMPLIFIER-OP AMP 制造商:Texas Instruments 功能描述:OP Amp Quad GP ±22V/44V 14-Pin CDIP Tube 制造商:Texas Instruments 功能描述:OP AMP QUAD GP 22V/44V 14CDIP - Rail/Tube 制造商:Texas Instruments 功能描述:LT1014AMJB QUAD PREC OP AMP |
| 5962-8967702CA | 制造商:Texas Instruments 功能描述:OP Amp Quad GP ±22V/44V 14-Pin CDIP Tube 制造商:Texas Instruments 功能描述:OP AMP QUAD GP 22V/44V 14CDIP - Rail/Tube |
| 5962-8967801XA | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| 5962-8967802XA | 制造商:Rochester Electronics LLC 功能描述:8-BIT QUAD MULT DAC IC - Bulk 制造商:Analog Devices 功能描述: |
| 5962-8967901XC | 制造商:SEI 功能描述: |
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