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INTEGRATED CIRCUITS
DAC-08 SERIES 8-bit high-speed multiplying D/A converter
Product data Supersedes data of 1994 Aug 31 File under Integrated Circuits, Handbook IC11 2001 Aug 03
Philips Semiconductors
Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
DESCRIPTION
The DAC-08 series of 8-bit monolithic multiplying Digital-to-Analog Converters provide very high-speed performance coupled with low cost and outstanding applications flexibility. Advanced circuit design achieves 70 ns settling times with very low glitch and at low power consumption. Monotonic multiplying performance is attained over a wide 20-to-1 reference current range. Matching to within 1 LSB between reference and full-scale currents eliminates the need for full-scale trimming in most applications. Direct interface to all popular logic families with full noise immunity is provided by the high swing, adjustable threshold logic inputs. Dual complementary outputs are provided, increasing versatility and enabling differential operation to effectively double the peak-to-peak output swing. True high voltage compliance outputs allow direct output voltage conversion and eliminate output op amps in many applications. All DAC-08 series models guarantee full 8-bit monotonicity and linearities as tight as 0.1% over the entire operating temperature range. Device performance is essentially unchanged over the 4.5 V to 18 V power supply range, with 37 mW power consumption attainable at 5 V supplies. The compact size and low power consumption make the DAC-08 attractive for portable and military aerospace applications.
PIN CONFIGURATIONS
N Package
VLC 1 IO 2 V- 3 IO 4 B1 (MSB) 5 B2 6 B3 7 B4 8 TOP VIEW 16 COMP 15 VREF- 14 V REF+ 13 V+ 12 B8 (LSB) 11 B7 10 B6 9 B5
D1 Package
V+ 1 VREF+ 2 VREF- 3 COMPEN 4 VLC 5 16 B8 (LSB) 15 B7 14 B6 13 B5 12 B4 11 B3 10 B2 9 TOP VIEW NOTE: 1. SO and non-standard pinouts. B1 (MSB)
FEATURES
IO 6 V- 7 IO 8
* Fast settling output current--70 ns * Full-scale current prematched to 1 LSB * Direct interface to TTL, CMOS, ECL, HTL, PMOS * Relative accuracy to 0.1% maximum over temperature range * High output compliance -10 V to +18 V * True and complemented outputs * Wide range multiplying capability * Low FS current drift -- 10ppm/C * Wide power supply range--4.5 V to 18 V * Low power consumption--37 mW at 5 V
APPLICATIONS
SL00001
Figure 1. Pin Configuration
* 8-bit, 1 s A-to-D converters * Servo-motor and pen drivers * Waveform generators * Audio encoders and attenuators * Analog meter drivers * Programmable power supplies * CRT display drivers * High-speed modems * Other applications where low cost, high speed and complete
input/output versatility are required
* Programmable gain and attenuation * Analog-Digital multiplication
2001 Aug 03 2 853-0045 26832
Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
ORDERING INFORMATION
DESCRIPTION 16-Pin Plastic Dual In-Line Package (DIP) 16-Pin Plastic Dual In-Line Package (DIP) 16-Pin Plastic Small Outline (SO) Package 16-Pin Plastic Dual In-Line Package (DIP) TEMPERATURE RANGE 0 to +70C 0 to +70C 0 to +70C 0 to +70C ORDER CODE DAC-08CN DAC-08EN DAC-08ED DAC-08HN DWG # SOT38-4 SOT38-4 SOT109-1 SOT38-4
BLOCK DIAGRAM
V+ 13 VLC 1 5 MSB B1 6 B2 7 B3 8 B4 9 B5 10 B6 11 B7 12 LSB B8
4 BIAS NETWORK CURRENT SWITCHES
IOUT IOUT
14 VREF(+) + - 15 REFERENCE AMPLIFIER
2
VREF(-)
16 COMP.
3 V-
SL00002
Figure 2. Block Diagram
ABSOLUTE MAXIMUM RATINGS
SYMBOL V+ to V- V5-V12 VLC V0 I14 V14, V15 PD Power supply voltage Digital input voltage Logic threshold control Applied output voltage Reference current Reference amplifier inputs Maximum power dissipation Tamb = 25 C (still-air)1 N package D package Lead soldering temperature (10 sec max) Operating temperature range Storage temperature range PARAMETER RATING 36 V- to V- plus 36 V V- to V+ V- to +18 5.0 VEE to VCC 1450 1090 230 0 to +70 -65 to +150 mW mW C C C V mA UNIT V
TSOLD Tamb Tstg
NOTE: 1. Derate above 25 C, at the following rates: N package at 11.6mW/C D package at 8.7mW/C
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
DC ELECTRICAL CHARACTERISTICS
Pin 3 must be at least 3 V more negative than the potential to which R15 is returned. VCC = 15V , IREF = 2.0 mA. Output characteristics refer to both IOUT and IOUT unless otherwise noted. Tamb = 0 C to 70 C. DAC-08C SYMBOL PARAMETER Resolution Monotonicity Relative accuracy Differential non-linearity TCIFS VOC IFS4 IFSS IZS IFSR Full-scale tempco Output voltage compliance Full-scale current Full-scale symmetry Zero-scale current Full-scale output current range R14, R15=5.000 k VREF = +15.0 V, V- = -10 V VREF = +25.0 V, V- = -12 V VLC = 0 V 0.8 2.0 VLC = 0 V VIN = -10 V to +0.8 V VIN = 2.0 V to 18 V V- = -15 V VS = 15 V -10 -10 -1.0 4.0 IREF = 1 mA V+ = 4.5 to 5.5 V, V- = -15 V; V+ = 13.5 to 16.5 V, V- = -15 V V- = -4.5 to -5.5 V, V+ = +15 V; V- = -13.5 to -16.5 V, V+ = +15 V 0.0003 0.002 0.01 0.01 0.0003 0.002 0.01 0.01 %FS/%VS %FS/%VS 8.0 -2.0 0.002 -10 10 +18 +13.5 -3.0 4.0 -10 -10 -1.0 8.0 2.0 -2.0 0.002 -10 10 +18 +13.5 -3.0 0.8 V V A A V V A mA/s 2.1 4.2 Full-scale current change< 1/2LSB VREF = 10.000V; R14, R15=5.000 k IFS4-IFS2 -10 1.94 1.99 2.0 0.2 10 +18 2.04 16 4.0 2.1 4.2 -10 1.94 1.99 1.0 0.2 Over temperature range TEST CONDITIONS Min 8 8 Typ 8 8 Max 8 8 0.39 0.78 10 +18 2.04 8.0 2.0 Min 8 8 DAC-08E Typ 8 8 Max 8 8 0.19 0.39 UNIT Bits Bits %FS %FS ppm/C V mA A A mA mA
VIL VIH IIL IIH VIS VTHR I15 dl/dt
Logic input levels Low High Logic input current Low High Logic input swing Logic threshold range Reference bias current Reference input slew rate Power supply sensitivity
PSSIFS+ PSIFS-
Positive Negative Power supply current Positive Negative Positive Negative Positive Negative Power dissipation
I+ I- I+ I- I+ I- PD
VS = 5 V IREF = 1 0 mA V, 1.0 VS = +5 V -15 V IREF = 2 0 mA V, V, 2.0 VS = 15 V IREF = 2 0 mA V, 2.0 5 V, IREF = 1.0 mA +5 V, -15 V, IREF = 2.0 mA 15 V, IREF = 2.0 mA
3.1 -4.3 3.1 -7.1 3.2 -7.2 37 122 156
3.8 -5.8 3.8 -7.8 3.8 -7.8 48 136 174
3.1 -4.3 3.1 -7.1 3.2 -7.2 37 122 156
3.8 -5.8 3.8 -7.8 3.8 -7.8 48 136 174
mA mA mA mA mA mA mW mW mW
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
DC ELECTRICAL CHARACTERISTICS (Continued)
Pin 3 must be at least 3 V more negative than the potential to which R15 is returned. VCC = +15 V, IREF = 2.0 mA. Output characteristics refer to both IOUT and IOUT, unless otherwise noted. Tamb = 0 C to 70 C. SYMBOL PARAMETER TEST CONDITIONS Min Resolution Monotonicity Relative accuracy Differential non-linearity TCIFS VOC IFS4 IFSS IZS IFSR Full-scale tempco Output voltage compliance Full-scale current Full-scale symmetry Zero-scale current Full-scale output current range R14, R15 = 5.000 k VREF = +15.0 V, V- = -10 V VREF=+25.0V, V-=-12V VLC = 0 V 0.8 2.0 VLC = 0 V VIN = -10 V to +0.8 V VIN = 2.0 V to 18 V V- = -15 V VS = 15 V -10 -10 -1.0 4.0 IREF = 1 mA V+ = 4.5 to 5.5 V, V- = -15 V; V+ = 13.5 to 16.5 V, V- = -15 V V- = -4.5 to -5.5 V, V+ = +15 V; V- = -13.5 to -16.5 V, V+ = +15 V 0.0003 0.002 0.01 0.01 %FS/%VS %FS/%VS 8.0 -2.0 0.002 -10 10 +18 +13.5 -3.0 V V A A V V A mA/s 2.1 4.2 Full-scale current change 1/2LSB VREF = 10.000 V, R14, R15 = 5.000 k IFS4-IFS2 -10 1.984 1.992 1.0 0.2 Over temperature range 10 8 8 DAC-08H Typ 8 8 Max 8 8 0.1 0.19 50 +18 2.000 4.0 1.0 Bits Bits %FS %FS ppm/C V mA A A mA mA UNIT
VIL VIH IIL IIH VIS VTHR I15 dl/dt
Logic input levels Low High Logic input current Low High Logic input swing Logic threshold range Reference bias current Reference input slew rate Power supply sensitivity
PSSIFS+ PSIFS-
Positive Negative Power supply current Positive Negative Positive Negative Positive Negative Power dissipation
I+ I- I+ I- I+ I- PD
VS = 5 V IREF = 1 0 mA V, 1.0 VS = +5 V -15 V IREF = 2 0 mA V, V, 2.0 VS = 15 V IREF = 2 0 mA V, 2.0 5 V, IREF = 1.0 mA +5 V, -15 V, IREF = 2.0 mA 15 V, IREF = 2.0 mA
3.1 -4.3 3.1 -7.1 3.2 -7.2 37 122 156
3.8 -5.8 3.8 -7.8 3.8 -7.8 48 136 174
mA mA mA mA mA mA mW mW mW
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
AC ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER TEST CONDITIONS To 1/2LSB, all bits switched on or off, Tamb = 25 C Tamb = 25 C, each bit. All bits switched 35 60 35 60 35 60 DAC-08C Min Typ 70 Max 135 Min DAC-08E Typ 70 Max 135 Min DAC-08H Typ 70 Max 135 UNIT
tS
Settling time Propagation delay
ns
tPLH tPHL
Low-to-High High-to-Low
ns
TEST CIRCUITS
VREF V- V+
RREF 16 14 3 13 4 1 2 Rf
DAC-08 15 R15 5-12
CONTROL LOGIC
- NE5534 +
ERROR OUTPUT
REFERENCE DAC ACCURACY > 0.006%
SL00003
Figure 3. Relative Accuracy Test Circuit
0.1 F
VCC 2.4 V 13 eIN +2.0 VDC 14 15 1 2 4 16 1.0 k 0.1 F FOR SETTLING TIME MEASUREMENT eO (ALL BITS SWITCHED LOW TO HIGH) 0.4 V tPHL = tPLH = 10 ns 1.0 V SETTLING TIME RL = 500 0 tS = 70 ns TYPICAL TO 1/2 LSB TRANSIENT 0 RESPONSE -100 mV tPLH RL = 50 PIN 4 TO GND tPHL RL USE RL to GND FOR TURN OFF MEASUREMENT 1.4 V
5 6 7 8 9 10 11 12 51 DAC-08
1.0 k
eIN
0.1 F
15 pF 3 VEE
CO 25 pF
SL00004
Figure 4. Transient Response and Settling Time
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
TEST CIRCUITS (Continued)
VCC RIN 13 5 6 7 8 9 10 11 12 0.1 F RL SCOPE dI dt I dV + R L dt DAC-08 14 15 1 2 4 16 OPEN 10% 90% 2.0 mA SLEWING TIME VEE 0 REQ = 200 1 k RP VIN 2V 0
3
SL00005
Figure 5. Reference Current Slew Rate Measurement
VCC ICC 13 I14 A1 A2 A3 DIGITAL INPUTS A4 A5 A6 A7 A8 (+) VI IEE VEE 5 6 7 8 9 10 11 12 II 3 4 16 IO RL C DAC-08 15 1 2 VO OUTPUT I15 R15 14 R14 VREF (+)
NOTES: (See text for values of C.) Typical values of R14 = R15 = 1 k VREF = +2.0 V
C = 15 pF VI and II apply to inputs A1 through A8 The resistor tied to Pin 15 is to temperature compensate the bias current and may not be necessary for all applications. I +K A1 2 ) A2 4 ) A3 8 ) A4 16 ) A5 32 ) A6 64 ) A8 A7 ) 256 128
O
where K [
V REF R 14
and AN = `1' if AN is at High Level AN = `0' if AN is at Low Level
SL00006
Figure 6. Notation Definitions
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
TYPICAL PERFORMANCE CHARACTERISTICS
Output Current vs Output Voltage (Output Voltage Compliance)
ALL BITS ON 3.2 OUTPUT CURRENT (mA) 2.8 2.4 V- = -15V 2.0 1.6 1.2 0.8 0.4 0 -14 -10 IREF = 0.2mA (00000000) -6 -2 0 2 6 10 OUTPUT VOLTAGE (V) 14 18 200ns/division REQ = 200, RL = 100, CC = 0 (11111111) IREF = 1mA IOUT -2.5mA 2.0mA IOUT V- = -5V IREF = 2mA TA = Tmin TO Tmax VIN 0.5V -0.5mA 1.0mA 2.5V 0mA IOUT
Fast Pulsed Reference Operation
True and Complementary Output Operation
Full-Scale Settling Time
ALL BITS SWITCHED ON 2.4V 0.4V OUTPUT - 1/2LSB 0 SETTLING +1/2LSB BIT 8 2.4V LOGIC INPUT 0.4V 0V 8A IOUT 0
LSB Switching
I FS - OUTPUT CURRENT (mA) 5.0
Full-Scale Current vs Reference Current
TA = Tmin TO Tmax ALL BITS "HIGH" 4.0 3.0 2.0 1.0 0 0 1.0 2.0 3.0 4.0 5.0 IREF -- REFERENCE CURRENT (mA) LIMIT FOR V-=-5V LIMIT FOR V-=-15V
50ns/DIVISIOM IFS=2mA, RL=1k 1/2LSB=4A
50ns/DIVISIOM
LSB Propagation Delay vs IFS
500 PROPAGATION DELAY (ns) 400 300 200 1LSB=7.8A 100 1LSB=78nA .05 .01 .02 .05 0.1 0.2 0.5 1.0 2.0 5.0 10 0 RELATIVE OUTPUT (dB)
Reference Input Frequency Response
6 4 2 0 -2 -4 -6 -8 -10 -12 -14 0.1 R14=R15=1k RL 500 ALL BITS "ON" VR15 = 0V 0.2 0.5 1.0 2.0 FREQUENCY (MHz) 5.0 10 3 1 2
IFS -- OUTPUT FULL SCALE CURRENT (mA) NOTES: Curve 1: Curve 1: Curve 1: CC = 15pF, VIN = 2.0VP-P centered at +1.0V CC = 15pF, VIN = 5m0VP-P centered at +200mV CC = 15pF, VIN = 100m0VP-P centered at 0V and applied through 50 connected to Pin 14. +2.0V applied to R14.
SL00007
Figure 7. Typical Performance Characteristics
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Reference AMP Common-Mode Range All Bits On
3.2 OUTPUT CURRENT (mA) 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0 -14 -10 -6 -2 0 2 IREF = 1mA IREF = 0.2mA 6 10 14 18 V- = -15V V- = -5V V+ = +5V IREF = 2mA LOGIC INPUT CURRENT ( A) TA = TMIN to TMAX
Logic Input Current vs Input Voltage
8.0
VTH - VLC vs Temperature
2.0 1.8 1.6 1.4 1.2 1.o 0.8 0.6 0.4 0.2 0
4.0
2.0
0 -12
V LC V TH -
(V)
6.0
V15 -- REFERENCE COMMON MODE VOLTAGE (V) POSITIVE COMMON-MODE RANGE IS ALWAYS (V+) -1.5V.
-8 -4 0 4 8 12 LOGIC INPUT VOLTAGE (V)
16
-50
0 50 100 TEMPERATURE (C)
150
Output Voltage Compliance vs Temperature
20 16 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 12 8 4 0 -4 -8 -12 -50 0 50 100 150 TEMPERATURE (C) Shaded area indicates permissible output voltage range for V- = -15V, IREF 2.0mA For other V- or IREF See "Output Current vs Output Voltage" curve on previous page 1.4 1.2
Bit Transfer Characteristics
POWER SUPPLY CURRENT (mA)
Power Supply Current vs V+
8 7 6 5 4 3 2 1 0 -50 0 50 100 150 V+ - POSITIVE POWER SUPPLY (VDC) 16 I+ ALL BITS HIGH OR LOW I-
IREF = 2.0mA 1.0 0.8 0.6 0.4 0.2 0 -12 NOTES: V- = -15V V- = -5V
B1
B2 B3 B4
-8
B5 -4 0 4 8 12 LOGIC INPUT VOLTAGE (V)
B1 through B8 have identical transfer characteristics. Bits are fully switched, with less than 1/2LSB error, at less than 100mV from actual threshold. These switching points are guaranteed to lie between 0.8 and 2.0V over the operating temperature range (VLC = 0.0V).
Power Supply Current vs V-
POWER SUPPLY CURRENT (mA) 8 7 6 5 4 3 2 1 0 0 -4.0 -8.0 -12 -16 -20 I- WITH IREF = 0.2mA I+ I- WITH IREF = 1mA BITS MAY BE HIGH OR LOW I- WITH IREF = 2mA
Power Supply Current vs Temperature
POWER SUPPLY CURRENT (mA) 8 7 6 5 4 3 2 1 0 -50 0 50 100 TEMPERATURE (C) 150 V+ = +15V I+ IREF = 2.0mA BITS MAY BE HIGH OR LOW V- = +15V I-
Maximum Reference Input Frequency vs Compensation Capacitor Value
10,000
F (kHz) MAX
1,000
100
V- -- NEGATIVE POWER SUPPLY (VDC)
10 1 10 CC (pF) 100 1000
SL00008
Figure 8. Typical Performance Characteristics (cont.)
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
TYPICAL APPLICATION
+VREF OPTIONAL RESISTOR FOR OFFSET INPUTS RIN 0V RP RREF 14 REQ =200 15 16 4 2
Output Voltage Range
The voltage at Pin 4 must always be at least 4.5 V more positive than the voltage of the negative supply (Pin 3) when the reference current is 2 mA or less, and at least 8 V more positive than the negative supply when the reference current is between 2 mA and 4 mA. This is necessary to avoid saturation of the output transistors, which would cause serious accuracy degradation.
Output Current Range
NO CAP
NOTES: REQ = RIN || RP Typical Values RIN = 5k +VIN = 10V
Any time the full-scale current exceeds 2 mA, the negative supply must be at least 8 V more negative than the output voltage. This is due to the increased internal voltage drops between the negative supply and the outputs with higher reference currents.
Accuracy
SL00009
Pulsed Referenced Operation Figure 9. Typical Application
FUNCTIONAL DESCRIPTION Reference Amplifier Drive and Compensation
The reference amplifier input current must always flow into Pin 14 regardless of the setup method or reference supply voltage polarity. Connections for a positive reference voltage are shown in Figure 3. The reference voltage source supplies the full reference current. For bipolar reference signals, as in the multiplying mode, R15 can be tied to a negative voltage corresponding to the minimum input level. R15 may be eliminated with only a small sacrifice in accuracy and temperature drift. The compensation capacitor value must be increased as R14 value is increased. This is in order to maintain proper phase margin. For R14 values of 1.0, 2.5, and 5.0 k, minimum capacitor values are 15, 37, and 75 pF, respectively. The capacitor may be tied to either VEE or ground, but using VEE increases negative supply rejection. (Fluctuations in the negative supply have more effect on accuracy than do any changes in the positive supply.) A negative reference voltage may be used if R14 is grounded and the reference voltage is applied to R15 as shown. A high input impedance is the main advantage of this method. The negative reference voltage must be at least 3.0 V above the VEE supply. Bipolar input signals may be handled by connecting R14 to a positive reference voltage equal to the peak positive input level at Pin 15. When using a DC reference voltage, capacitive bypass to ground is recommended. The 5.0 V logic supply is not recommended as a reference voltage, but if a well regulated 5.0V supply which drives logic is to be used as the reference, R14 should be formed of two series resistors with the junction of the two resistors bypassed with 0.1 F to ground. For reference voltages greater than 5.0 V, a clamp diode is recommended between Pin 14 and ground. If Pin 14 is driven by a high impedance such as a transistor current source, none of the above compensation methods applies and the amplifier must be heavily compensated, decreasing the overall bandwidth.
Absolute accuracy is the measure of each output current level with respect to its intended value, and is dependent upon relative accuracy, full-scale accuracy and full-scale current drift. Relative accuracy is the measure of each output current level as a fraction of the full-scale current after zero-scale current has been nulled out. The relative accuracy of the DAC-08 series is essentially constant over the operating temperature range due to the excellent temperature tracking of the monolithic resistor ladder. The reference current may drift with temperature, causing a change in the absolute accuracy of output current. However, the DAC-08 series has a very low full-scale current drift over the operating temperature range. The DAC-08 series is guaranteed accurate to within LSB at +25 C at a full-scale output current of 1.992 mA. The relative accuracy test circuit is shown in Figure 3. The 12-bit converter is calibrated to a full-scale output current of 1.99219 mA, then the DAC-08 full-scale current is trimmed to the same value with R14 so that a zero value appears at the error amplifier output. The counter is activated and the error band may be displayed on the oscilloscope, detected by comparators, or stored in a peak detector. Two 8-bit D-to-A converters may not be used to construct a 16-bit accurate D-to-A converter. 16-bit accuracy implies a total of part in 65,536, or 0.00076%, which is much more accurate than the 0.19% specification of the DAC-08 series.
Monotonicity
A monotonic converter is one which always provides analog output greater than or equal to the preceding value for a corresponding increment in the digital input code. The DAC-08 series is monotonic for all values of reference current above 0.5 mA. The recommended range for operation is a DC reference current between 0.5 mA and 4.0 mA.
Settling Time
The worst-case switching condition occurs when all bits are switched on, which corresponds to a low-to-high transition for all input bits. This time is typically 70 ns for settling to within LSB for 8-bit accuracy. This time applies when RL<500 and CO<25 pF. The slowest single switch is the least significant bit, which typically turns on and settles in 65 ns. In applications where the DAC functions in a positive-going ramp mode, the worst-case condition does not occur and settling times less than 70 ns may be realized. Extra care must be taken in board layout since this usually is the dominant factor in satisfactory test results when measuring settling time. Short leads, 100 F supply bypassing for low frequencies, minimum scope lead length, and avoidance of ground loops are all mandatory.
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
SETTLING TIME AND PROPAGATION DELAY
VS + = +15V VIN C3 VADJ Q1 D3 R1 = 1000 R14 = 5k VREF = 10V IREF = 2mA 15 16 R15 = 5k C1 3 C2 1 C5 50 14 DUT 2 5 6 7 8 9 10 11 12 4 VOUT D1 D2 C4 R3 = 500 R2 = 1000 VOUT
VS - = -15V
NOTES: D1, D2 = IN6263 or equivalent D3 = IN914 or equivalent C1 = 0.01F C2, C3 = 0.1F Q1 = 2N3904 C4, C5 = 15pF and includes all probe and fixturing capacitance.
SL00010
Figure 10. Settling Time and Propagation Delay
BASIC DAC-08 CONFIGURATION
MSB 2 +VREF RREF (LOW T.C.) IREF 5 14
34567
LSB
6 7 8 9 10 11 12 4 DAC-08 2
IO IO
15 3 V- CCOMP 0.1F 0.1F 16 13 1
V+
I
NOTES: ) V REF 255 [ x ; I )I +I for all logic states FS O O FS 256 R REF
SL00011
Figure 11. Basic DAC-08 Configuration
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
RECOMMENDED FULL-SCALE AND ZERO-SCALE ADJUST
VREF
R1 R2
14 DAC-08 15 R3
4 2
R4 = 1M
V+ RS = 20k
V-
NOTES: R1 = low T.C. R3 = R1 + R2 R2 0.1 R1 to minimize pot. contribution to full-scale drift
SL00012
Figure 12. Recommended Full-Scale and Zero-Scale Adjust
UNIPOLAR VOLTAGE OUTPUT FOR LOW IMPEDANCE OUTPUT
5k (LOW T.C.)
IR = 2mA 14 15 DAC-08
4
2 5k
- NE531 OR EQUIV +
VOUT = 0 TO +10V
SL00013
Figure 13. Unipolar Voltage Output for Low Impedance Output
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
UNIPOLAR VOLTAGE OUTPUT FOR HIGH IMPEDANCE OUTPUT
V = 10V
5k
5k VOUT
IR = 2mA 14
4 DAC-08 2 VOUT
a. Positive Output
VOUT
IR = 2mA 14
4 DAC-08 2
a. Negative Output
VOUT
SL00014
Figure 14. Unipolar Voltage Output for High Impedance Output
BASIC BIPOLAR OUTPUT OPERATION (OFFSET BINARY)
V = 10V
10k 4 IR = 2mA 14 2 DAC-08 VOUT 10k
VOUT
B1 Positive full-scale Positive FS - 1LSB + Zero-scale + 1LSB Zero-scale Zero-scale - 1LSB Negative full scale - 1LSB Negative full scale 1 1 1 1 0 0 0
B2 1 1 0 0 1 0 0
B3 1 1 0 0 1 0 0
B4 1 1 0 0 1 0 0
B5 1 1 0 0 1 0 0
B6 1 1 0 0 1 0 0
B7 1 1 0 0 1 0 0
B8 1 0 1 0 1 1 0
VOUT -9.920V -9.840V -0.080V 0.000 0.080 +9.920 +10.000
VOUT +10.000 +9.920 +0.160 +0.080 0.000 -9.840 -9.920
SL00015
Figure 15. Basic Bipolar Output Operation (Offset Binary)
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
DIP16: plastic dual in-line package; 16 leads (300 mil)
SOT38-4
2001 Aug 03
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
2001 Aug 03
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Philips Semiconductors
Product data
8-bit high-speed multiplying D/A converter
DAC-08 Series
Data sheet status
Data sheet status [1] Objective data Preliminary data Product status [2] Development Qualification Definitions This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notification (CPCN) procedure SNW-SQ-650A.
Product data
Production
[1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2001 All rights reserved. Printed in U.S.A. Date of release: 10-01
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 08922
Philips Semiconductors
2001 Aug 03 16

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