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Part: DAC0808LCM
Category:
Data Conversion
-> DAC (Digital to Analog Converters)
Description: DAC0808 - 8-Bit D/A Converter, Package: Soic Narrow, Pin Nb=16
Company: National Semiconductor Corporation
Datasheet: Download DAC0808LCM datasheet File size : 599 kB
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Datasheet text preview:
DAC0808 8-Bit D/A Converter
May 1999
DAC0808 8-Bit D/A Converter
General Description
The DAC0808 is an 8-bit monolithic digital-to-analog converter (DAC) featuring a full scale output current settling time of 150 ns while dissipating only 33 mW with ± 5V supplies. No reference current (IREF) trimming is required for most applications since the full scale output current is typically ± 1 LSB of 255 IREF/256. Relative accuracies of better than ± 0.19% assure 8-bit monotonicity and linearity while zero level output current of less than 4 µA provides 8-bit zero accuracy for IREF2 mA. The power supply currents of the DAC0808 is independent of bit codes, and exhibits essentially constant device characteristics over the entire supply voltage range. The DAC0808 will interface directly with popular TTL, DTL or CMOS logic levels, and is a direct replacement for the MC1508/MC1408. For higher speed applications, see DAC0800 data sheet.
Features
n n n n Relative accuracy: ± 0.19% error maximum Full scale current match: ± 1 LSB typ Fast settling time: 150 ns typ Noninverting digital inputs are TTL and CMOS compatible n High speed multiplying input slew rate: 8 mA/µs n Power supply voltage range: ± 4.5V to ± 18V n Low power consumption: 33 mW @ ± 5V
Block and Connection Diagrams
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Dual-In-Line Package
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Top View Order Number DAC0808 See NS Package M16A or N16A
© 2001 National Semiconductor Corporation
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DAC0808
Block and Connection Diagrams
(Continued)
Small-Outline Package
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Ordering Information
ACCURACY OPERATING TEMPERATURE RANGE 8-bit 0°CTA+75°C N PACKAGE (N16A) (Note 1) DAC0808LCN MC1408P8 SO PACKAGE (M16A) DAC0808LCM
Note 1: Devices may be ordered by using either order number.
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DAC0808
Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage VCC VEE Digital Input Voltage, V5 V12 Applied Output Voltage, VO Reference Current, I14 Reference Amplifier Inputs, V14, V15 Power Dissipation (Note 4) ESD Susceptibility (Note 5) +18 VDC -18 VDC to +18 VDC to +18 VDC 5 mA VCC, VEE 1000 mW TBD
Storage Temperature Range Lead Temp. (Soldering, 10 seconds) Dual-In-Line Package (Plastic) Dual-In-Line Package (Ceramic) Surface Mount Package Vapor Phase (60 seconds) Infrared (15 seconds)
-65°C to +150°C 260°C 300°C 215°C 220°C
-10 VDC -11 VDC
Operating Ratings
Temperature Range DAC0808 TMIN TA TMAX 0 TA +75°C
Electrical Characteristics
(VCC = 5V, VEE = -15 VDC, VREF/R14 = 2 mA, and all digital inputs at high logic level unless otherwise noted.) Symbol Er Parameter Relative Accuracy (Error Relative to Full Scale IO) DAC0808LC (LM1408-8) Settling Time to Within / LSB
12
Conditions (Figure 4)
Min
Typ
Max
Units %
± 0.19
TA = 25°C (Note 7), (Figure 5) TA = 25°C, (Figure 5) (Figure 3) 2 0.8 (Figure 3) VIH = 5V VIL = 0.8V (Figure 3) (Figure 3) VEE = -5V VEE = -15V, TA = 25°C 0 0 2.0 2.0 2.1 4.2 0 -0.003 -1 0.040 -0.8 -3 30 100 150
% ns ns ppm/°C VDC VDC mA mA µA mA mA
(Includes tPLH) tPLH, tPHL TCIO MSB VIH VIL MSB Propagation Delay Time Output Full Scale Current Drift Digital Input Logic Levels High Level, Logic "1" Low Level, Logic "0" Digital Input Current High Level Low Level I15 Reference Input Bias Current Output Current Range
± 20
IO
Output Current
VREF = 2.000V, R14 = 1000, (Figure 3) 1.9 1.99 0 2.1 4 -0.55, +0.4 -5.0, +0.4 (Figure 6) -5V VEE -16.5V (Figure 3) 2.3 -4.3 22 -13 5.5 -16.5 mA mA VDC VDC 4 8 0.05 2.7 mA µA VDC VDC mA/µs µA/V
Output Current, All Bits Low Output Voltage Compliance (Note 3) VEE = -5V, IREF = 1 mA VEE Below -10V SRIREF Reference Current Slew Rate Output Current Power Supply Sensitivity Power Supply Current (All Bits Low) ICC IEE Power Supply Voltage Range VCC VEE Power Dissipation
(Figure 3) Er 0.19%, TA = 25°C
TA = 25°C, (Figure 3) 4.5 -4.5 5.0 -15
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DAC0808
Electrical Characteristics
Symbol All Bits Low All Bits High Parameter
(Continued)
(VCC = 5V, VEE = -15 VDC, VREF/R14 = 2 mA, and all digital inputs at high logic level unless otherwise noted.) Conditions VCC = 5V, VEE = -5V VCC = 5V, VEE = -15V VCC = 15V, VEE = -5V VCC = 15V, VEE = -15V Min Typ 33 106 90 160 Max 170 305 Units mW mW mW mW
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating the device beyond its specified operating conditions. Note 3: Range control is not required. Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, JA, and the ambient temperature, TA. The maximum allowable power dissipation at any temperature is PD = (TJMAX - TA)/JA or the number given in the Absolute Maixmum Ratings, whichever is lower. For this device, TJMAX = 125°C, and the typical junction-to-ambient thermal resistance of the dual-in-line J package when the board mounted is 100°C/W. For the dual-in-line N package, this number increases to 175°C/W and for the small outline M package this number is 100°C/W. Note 5: Human body model, 100 pF discharged through a 1.5 k resistor. Note 6: All current switches are tested to guarantee at least 50% of rated current. Note 7: All bits switched. Note 8: Pin-out numbers for the DAL080X represent the dual-in-line package. The small outline package pinout differs from the dual-in-line package.
Typical Application
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FIGURE 1. +10V Output Digital to Analog Converter (Note 8)
Typical Performance Characteristics
Logic Input Current vs Input Voltage
VCC = 5V, VEE = -15V, TA = 25°C, unless otherwise noted Logic Threshold Voltage vs Temperature
Bit Transfer Characteristics
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DAC0808
Typical Performance Characteristics
noted (Continued) Output Current vs Output Voltage (Output Voltage Compliance)
VCC = 5V, VEE = -15V, TA = 25°C, unless otherwise
Output Voltage Compliance vs Temperature
Typical Power Supply Current vs Temperature
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Typical Power Supply Current vs VEE
Typical Power Supply Current vs VCC
Reference Input Frequency Response
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Unless otherwise specified: R14 = R15 = 1 k, C = 15 pF, pin 16 to VEE; RL = 50, pin 4 to ground. Curve A: Large Signal Bandwidth Method of Figure 7, VREF = 2 Vp-p offset 1V above ground. Curve B: Small Signal Bandwidth Method of Figure 7, RL = 250, VREF = 50 mVp-p offset 200 mV above ground. Curve C: Large and Small Signal Bandwidth Method of Figure 9 (no op amp, RL = 50), RS = 50, VREF = 2V, VS = 100 mVp-p centered at 0V.
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