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binary Weighted resistor ladder bipolar dac
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transistor M 9741Abstract: binary Weighted resistor ladder bipolar dac . R2R LADDER NETWORK 2 2R I I Application Note 9741 Bipolar DACs DAC Applications , VOLTAGE 2R 2K 2R 2R 2R 2K FIGURE 4. BIPOLAR DAC WITH A R2R LADDER Bipolar junction , done in binary or some form of binary such as octal or hexadecimal. The DAC has the ability to , not have an internal amplifier, so fractional binary numbers are used for DAC math. Fractional , amp out voltage is VOUT = IDACR, where R is the op amp feedback resistor. The direction of the DAC 
Harris Semiconductor Original 


binary Weighted resistor ladder dacAbstract: analog memory 2R 2K FIGURE 4. BIPOLAR DAC WITH A R2R LADDER Bipolar junction transistors are used to make , binary numbers are used for DAC math. Fractional binary numbers are expressed as shown below. Binary , amp out voltage is VOUT = IDACR, where R is the op amp feedback resistor. The direction of the DAC , 2R ladder are binaurally weighted, see Figure 3, thus, when each branch contains a bit switch the bit currents will be binaurally weighted. R2R ladder networks and their variations are commonly used to make 
Intersil Original 


Abstract: . S0 REFERENCE VOLTAGE 2R 2K 2R 2R 2R 2K FIGURE 4. BIPOLAR DAC WITH A R2R LADDER , conï¬gurations for a bipolar DAC is shown in Figure 4 where the R2R ladder is combined with a reference, a , binary numbers are used for DAC math. Fractional binary numbers are expressed as shown below. Binary , branch currents in a R2R ladder are binaurally weighted, see Figure 3, thus, when each branch contains a bit switch the bit currents will be binaurally weighted. R2R ladder networks and their variations 
Intersil Original 


Binary Weighted DACAbstract: binary Weighted resistor ladder dac Bipolar Offset Binary OUTPUT Current Unipolar mA Oto +10.24 Bipolar mA Â±5.12 Voltage (1 , a load resistor. TTL compatible bit switches are used to steer equally weighted currents to either the resistor network or ground. The resistor network contains a precision R/2R ladder, which produces binarily weighted currents at the putput. The combination of equally weighted currents and R/2R ladder , bipolar output. For a unipolar output the resistor network provides an output current of zero to +10.24 mA 
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ad550Abstract: ad850 Figure 1: Voltagemode BinaryWeighted Resistor DAC Currentmode binary DACs are shown in Figure 2A , adjusted by means of a resistor in series with the VREF terminal. In the currentmode R2R ladder DAC , ,461, Filed June 19, 1946, Issued November 9, 1948. (vacuum tube binary DAC using binary weighted , MT015 TUTORIAL Basic DAC Architectures II: Binary DACs by Walt Kester INTRODUCTION While the , The voltagemode binaryweighted resistor DAC shown in Figure 1 is usually the simplest textbook 
 Original 

ad550 ad850 r2r networks dac ic Binary Weighted DAC successive approximation adc ic binary Weighted resistor ladder dac AD550 AD850 
162b5Abstract: national semiconductor MDAC leftjustified (fractional binary) or rightjustified (positionally weighted binary) Also updating a 10bit DAC , low temperature coefficient of the gain or fullscale reading of the DAC Bipolar designs in the 10 , resistor ladder were to be used in the presence of this gradi ent it will cause a 0 15% error This , thinfilm resistor ladder and an onchip power dissipation of 30 mW max will overcome one of the major , binary and this has caused the MSB to be labeled as ``Bit 1'' on DAC products As may be expected this 
National Semiconductor Original 

AN277 162b5 national semiconductor MDAC C1995 DAC1000 DAC1001 
AN277Abstract: 24064 (positionally weighted binary)? Also, updating a 10bit DAC from an 8bit bus can cause transient output , obvious that the CMOS DAC, with its combination of a low temperature coefficient thinfilm resistor ladder and an onchip power dissipation of 30 mW max, will overcome one of the major problems in bipolar , insures a low temperature coefficient of the gain or fullscale reading of the DAC. Bipolar designs in , a diffused resistor ladder were to be used in the presence of this gradient, it will DATA 
National Semiconductor Original 

AN277 24064 DAC1002 DAC1006 DAC1007 DAC1008 
AD7541Abstract: AD7541KN switch voltage drop be equal if the binarily weighted current division property of the ladder is to be , resistor on the R2R ladder. The "ON" capacitance of the output Nchannel switch is 200pF, as shown on the , the AD542 or AD544. BIPOLAR (4QUADRANT) BINARY OPERATION (Figure 16) The digital input is offset , % at all temperatures, but need not track the re Figure 16. Bipolar (4Quadrant) Binary Operation , 2R ladder, ensures that the performance is maintained over the full temperature range. ORDERING INFORMATION 
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AD7541 AD7541A AD7521 AD7541JN AD7541AD AD7541SD AD7541KN AD7541BD 
AD7520Abstract: AD702 for bipolar modes. 2. Using internal feedback resistor, Rfeedback 3. Ladder and feedback resistor , . Highly stable thin film R2R resistor ladder network and NMOS SPDT switches form the basis of the , ladder SPDT switchesdriven by the level shifter, each switch is binarily weighted for an ON resistance , 471 AD7520/7530/7521/7531 DNfinMIO. (APPLICATIONS, Cont'd.) BIPOLAR (OFFSET BINARY) OPERATION The , binary code, (MSB = "Logic 1", All other bits = "Logic 0"), is corrected by using an external resistor 
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AD7530 AD7531 AD7520 AD702 AD7520 8 bit Ld 7531 a binary Weighted resistor ladder bipolar dac A021Power AD7520/ AD7521/AD7531 AD7520/7530 AD7521/7531 AD7520/AD7530 
binary Weighted resistor ladder dacAbstract: AD7541 AD7541 is a 12 bit, monolithic, multiplying D/A converter. Highly stable thin film R2R resistor ladder , equivalent circuit of the DAC Is shown in Figure 9. The NMOS DPDT switches steer the ladder leg currents , shifter, each switch is birtarily weighted for an "ON" resistance proportional to the respective ladder , Table Bipolar (Offset Binary) Operation DIGITAL INPUT ANALOG OUTPUT 111111111111 Vref (11/211 , ) 000000000000 Vref BIPOLAR (OFFSET BINARY) OPERATION The circuit configuration for operating the AD7541 in the 
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AD7541TD diode hp5082 DPDT SWITCHES digital to analog variable RESISTOR NETWORk AD operation amplifier HP50822811 
AD7541Abstract: DPDT SWITCHES bipolar modes. Specifications subject to 2. Using internal feedback resistor, Rfeedback. change without , converter. Highly stable thin film R2R resistor ladder network and NMOS DPDT switches form the basis of the , (OFFSET BINARY) OPERATION The circuit configuration for operating the AD7541 in the bipolar mode is given , and the VREF terminal. TABLE 2 Code Table â'" Bipolar (Offset Binary) Operation DIGITAL INPUT , , low cost, high performance, 12bit accurate, multiplying digitaltoanalog converter (DAC). Intersil 
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10KI1 741HS 10K11 AD7541I 
HP50822811Abstract: IH8510 . Bipolar (Offset Binary) Code Table 480 AD7533 POWER DAC DESIGN USING AD7533 30pF â'" 15V Figure S , ±10V for bipolar modes. Specifications subject to 2. Using internal feedback resistor, Rfeedback. change , . Highly stable thin film R2R resistor ladder network and NMOS DPDT switches form the basis of the , resistors. This approach 10BIT AND SIGN MULTIPLYING DAC Â±10V BIPOLAR Basic Power DAC minimizes drift , ï»¿AD7533 10 Bit Monolithic Multiplying D/A Converters FEATURES â'¢ Lowest cost 10bit DAC â'¢ 8 
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IH8510 HP5082 2S11 AD7533AD AD7533BD AD7533JN A021P 
Abstract: 1250. Functional elements o f the DAC include b it switches, a precision thin film resistor netw ork, a DC voltage , weighted currents to either the resistor netw ork or ground. The resistor netw ork contains a precision R/2R ladder, which produces binarily weighted currents at the putp ut. The com bination o f equally weighted currents and R/2R ladder netw ork yields the optim um fast settling and low glitch performance , source, which is used to generate a bipolar ou tp u t. For a unipolar o u tp u t the resistor netw ork 
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DDC1250 35NSEC ILSTD883B MILSTD883 D4/86 
74LS138 pin configurationAbstract: current to voltage converter using 741 . Microprocessor Interface to SP7514 Following the decoded section of the DAC a standard binary weighted R , implemented as a onechip CMOS circuit with a resistor ladder network. Three output lines are provided on the , feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external resistor for the 1 LSB offset in bipolar mode. The SP7516 is available for use in , SP7516 HS3160 BINARY INPUT UNIPOLAR OUTPUT BIPOLAR OUTPUT 111.111 VREF (1  2N) 100.001 
 Original 

74LS138 pin configuration current to voltage converter using 741 BIT16 HS3160C4Q HS3160B4Q HS3160B4/883 SP7516JN SP7516KN 
A 3120 vAbstract: A 3120 connection with a minimum of external components. The feedback resistor is internal. The resistor ladder , standard R2R DAC ladder network. This technique assures high accuracy without laser trimming. Other , resistor ladder network designed for 0.01 % linearity without laser trimming. High reliability is assured , Bipolar Offset Binary .Complementary Offset Binary Complementary Logic Compatibility TTL and CMOS , Manufacturer PIN ASSIGNMENTS PIN FUNCTION 1 FB2, Feedback for Bipolar Operation 2 LDTR, Ladder Termination 
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HS3120 A 3120 v A 3120 s3120 8 pin ic A 3120 IC A 3120 S31200CN MAS31200IJ MAS31200MJ MAS31202CP MAS31202IE 
TTL 74273Abstract: hs3140c % for the common approach. Following the decoded section of the DAC a standard binary weighted R , implemented as a onechip CMOS circuit with a resistor ladder network. Three output lines are provided on the , feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external resistor for the 1 LSB offset in bipolar mode. The SP7514 is available for use in , BINARY INPUT UNIPOLAR OUTPUT BIPOLAR OUTPUT 111.111 VREF (1  2N) 100.001 VREF (1/2 + 2 
Sipex Original 

HS3140 HS3140B4Q TTL 74273 hs3140c uses of 74273 74273 74273 latch application note HS3140C4 HS3140B4/883 SP7514JN SP7514KN SP7514AN 
hs3140cAbstract: HS3140 onechip CMOS circuit with a resistor ladder network. Three output lines are provided on the DACs to allow unipolar and bipolar output connection with a minimum of external components. The feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external resistor for the 1 LSB offset in bipolar mode. The SP7514 is available for use in commercial and , /HS3140, small values for Cf must be used. Following the decoded section of the DAC a standard binary 
Sipex Original 

HS3140/SP7514 SP7514BN 
4 bit shift register 74273 pin diagramAbstract: HS3160 . Microprocessor Interface to SP7514 Following the decoded section of the DAC a standard binary weighted R , implemented as a onechip CMOS circuit with a resistor ladder network. Three output lines are provided on the , feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external resistor for the 1 LSB offset in bipolar mode. The SP7516 is available for use in , SP7516 HS3160 BINARY INPUT UNIPOLAR OUTPUT BIPOLAR OUTPUT 111.111 VREF (1  2N) 100.001 
Sipex Original 

4 bit shift register 74273 pin diagram OP27 6pin SP7516AN SP7516BN 
Abstract: prevent overshoot. Output Offset Following the decoded section of the DAC a standard binary weighted R , CMOS circuit with a resistor ladder network. Three output lines are provided on the DACs to allow unipolar and bipolar output connection with a mini mum of external components. The feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external re , (N=16) BINARY INPUT UNIPOLAR OUTPUT BIPOLAR OUTPUT 111.111 100.001 100.000 011.111 000.001 
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3160B 7516JN 
HS3140C4QAbstract: HS3140 common approach. Following the decoded section of the DAC a standard binary weighted R2R approach is , implemented as a onechip CMOS circuit with a resistor ladder network. Three output lines are provided on the , feedback resistor is internal. The resistor ladder network termination is externally available, thus eliminating an external resistor for the 1 LSB offset in bipolar mode. The SP7514 is available for use in , DIGITAL INPUT Resolution 2Quad, Unipolar Coding 4Quad, Bipolar Coding Logic Compatibility Input 
 Original 

HS3140C4Q 
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