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 Product data 8-bit high-speed multiplying D/A converter DESCRIPTION DAC-08 Series PIN CONFIGURATIONS 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. N Package VLC 1 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. 16 COMP IO 2 15 VREF– V– 3 14 V REF+ IO 4 13 V+ B1 (MSB) 5 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. 12 B8 (LSB) B2 6 11 B7 B3 7 10 B6 B4 8 9 B5 TOP VIEW D1 Package 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. V+ 1 The compact size and low power consumption make the DAC-08 attractive for portable and military aerospace applications. FEATURES • 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 16 B8 (LSB) VREF+ 2 15 B7 VREF– 3 14 B6 COMPEN 4 13 B5 VLC 5 12 B4 IO 6 11 B3 V– 7 10 B2 IO 8 9 B1 (MSB) TOP VIEW NOTE: 1. SO and non-standard pinouts. SL00001 Figure 1. Pin Configuration APPLICATIONS • 8-bit, 1 µs 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 TEMPERATURE RANGE ORDER CODE DWG # 16-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C DAC-08CN SOT38-4 16-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C DAC-08EN SOT38-4 16-Pin Plastic Small Outline (SO) Package 0 to +70°C DAC-08ED SOT109-1 16-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C DAC-08HN SOT38-4 BLOCK DIAGRAM V+ MSB B1 VLC 13 1 5 B2 6 B3 B4 7 8 B5 9 B6 10 LSB B8 B7 11 12 4 BIAS NETWORK CURRENT SWITCHES 14 VREF(+) VREF(–) IOUT IOUT 2 + – 15 REFERENCE AMPLIFIER 16 COMP. 3 V– SL00002 Figure 2. Block Diagram ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER RATING UNIT 36 V V+ to V– Power supply voltage V5–V12 Digital input voltage VLC Logic threshold control V– to V+ V0 Applied output voltage V– to +18 V I14 Reference current 5.0 mA V14, V15 Reference amplifier inputs PD Maximum power dissipation Tamb = 25 °C (still-air)1 N package D package TSOLD Lead soldering temperature (10 sec max) Tamb Operating temperature range Tstg Storage temperature range V– to V– plus 36 V VEE to VCC NOTE: 1. Derate above 25 °C, at the following rates: N package at 11.6mW/°C D package at 8.7mW/°C 2001 Aug 03 3 1450 1090 mW mW 230 °C 0 to +70 °C –65 to +150 °C 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 TEST CONDITIONS DAC-08E UNIT Min Typ Max Min Typ Max Resolution 8 8 8 8 8 8 Bits Monotonicity 8 8 8 8 8 8 Bits ±0.39 ±0.19 %FS ±0.78 ±0.39 %FS Relative accuracy Over temperature range Differential non-linearity TCIFS Full-scale tempco VOC Output voltage compliance IFS4 Full-scale current IFSS Full-scale symmetry IZS Zero-scale current IFSR Full-scale output current range ±10 Full-scale current change< 1/2LSB –10 VREF = 10.000V; R14, R15=5.000 kΩ 1.94 IFS4-IFS2 R14, R15=5.000 kΩ VREF = +15.0 V, V– = –10 V VREF = +25.0 V, V– = –12 V –10 1.99 2.04 1.94 ±2.0 0.2 Logic input levels Low High VLC = 0 V IIL IIH Logic input current Low High VLC = 0 V VIN = –10 V to +0.8 V VIN = 2.0 V to 18 V VIS Logic input swing V– = –15 V –10 VTHR Logic threshold range VS = ±15 V –10 I15 Reference bias current dl/dt Reference input slew rate V 1.99 2.04 mA ±16 ±1.0 ±8.0 µA 4.0 0.2 2.0 µA 2.1 4.2 mA mA 0.8 2.0 0.8 V V –10 10 µA µA +18 V 2.0 –2.0 0.002 –1.0 4.0 ppm/°C +18 2.1 4.2 VIL VIH Power supply sensitivity ±10 +18 –10 10 –2.0 0.002 +18 –10 +13.5 –10 –3.0 8.0 –1.0 4.0 +13.5 V –3.0 µA 8.0 mA/µs IREF = 1 mA PSSIFS+ Positive V+ = 4.5 to 5.5 V, V– = –15 V; V+ = 13.5 to 16.5 V, V– = –15 V 0.0003 0.01 0.0003 0.01 %FS/%VS PSIFS– Negative V– = –4.5 to –5.5 V, V+ = +15 V; V– = –13.5 to –16.5 V, V+ = +15 V 0.002 0.01 0.002 0.01 %FS/%VS 0 mA VS = ±5 V V, IREF = 1 1.0 3.1 –4.3 3.8 –5.8 3.1 –4.3 3.8 –5.8 mA mA I+ I– Power supply current Positive Negative I+ I– Positive Negative VS = +5 V V, –15 V V, IREF = 2 2.0 0 mA 3.1 –7.1 3.8 –7.8 3.1 –7.1 3.8 –7.8 mA mA I+ I– Positive Negative VS = ±15 V V, IREF = 2 2.0 0 mA 3.2 –7.2 3.8 –7.8 3.2 –7.2 3.8 –7.8 mA mA ±5 V, IREF = 1.0 mA +5 V, –15 V, IREF = 2.0 mA ±15 V, IREF = 2.0 mA 37 122 156 48 136 174 37 122 156 48 136 174 mW mW mW PD 2001 Aug 03 Power dissipation 4 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. PARAMETER SYMBOL TEST CONDITIONS Resolution Monotonicity Relative accuracy Differential non-linearity TCIFS Full-scale tempco VOC Output voltage compliance IFS4 Full-scale current IFSS Full-scale symmetry IZS Zero-scale current IFSR Full-scale output current range Typ Max 8 8 8 8 8 8 Bits Bits ±0.1 ±0.19 %FS %FS ±10 ±50 ppm/°C +18 V 1.992 2.000 mA ±1.0 ±4.0 µA 0.2 1.0 µA Full-scale current change 1/2LSB –10 VREF = 10.000 V, R14, R15 = 5.000 kΩ 1.984 IFS4–IFS2 Logic input levels Low High VLC = 0 V VIL VIH IIL IIH Logic input current Low High VLC = 0 V VIN = –10 V to +0.8 V VIN = 2.0 V to 18 V VIS Logic input swing V– = –15 V VTHR Logic threshold range VS = ±15 V I15 Reference bias current dl/dt Reference input slew rate Power supply sensitivity Min Over temperature range R14, R15 = 5.000 kΩ VREF = +15.0 V, V– = –10 V VREF=+25.0V, V–=–12V UNIT DAC-08H 2.1 4.2 mA mA 0.8 V V –10 10 µA µA –10 +18 V –10 +13.5 V 2.0 –2.0 0.002 –1.0 4.0 –3.0 8.0 µA mA/µs IREF = 1 mA PSSIFS+ Positive V+ = 4.5 to 5.5 V, V– = –15 V; V+ = 13.5 to 16.5 V, V– = –15 V 0.0003 0.01 %FS/%VS PSIFS– Negative V– = –4.5 to –5.5 V, V+ = +15 V; V– = –13.5 to –16.5 V, V+ = +15 V 0.002 0.01 %FS/%VS 0 mA VS = ±5 V V, IREF = 1 1.0 3.1 –4.3 3.8 –5.8 mA mA I+ I– Power supply current Positive Negative I+ I– Positive Negative VS = +5 V V, –15 V V, IREF = 2 2.0 0 mA 3.1 –7.1 3.8 –7.8 mA mA I+ I– Positive Negative VS = ±15 V V, IREF = 2 2.0 0 mA 3.2 –7.2 3.8 –7.8 mA mA ±5 V, IREF = 1.0 mA +5 V, –15 V, IREF = 2.0 mA ±15 V, IREF = 2.0 mA 37 122 156 48 136 174 mW mW mW PD 2001 Aug 03 Power dissipation 5 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DAC-08 Series AC ELECTRICAL CHARACTERISTICS SYMBOL tS PARAMETER DAC-08C TEST CONDITIONS Min To ± 1/2LSB, all bits switched on or off, Tamb = 25 °C Settling time DAC-08E Typ Max 70 35 Min DAC-08H Typ Max 135 70 60 35 Min Typ Max 135 70 135 60 35 60 UNIT ns Propagation delay tPLH Low-to-High Tamb = 25 °C, each bit. tPHL High-to-Low All bits switched ns TEST CIRCUITS VREF V– V+ 3 13 RREF 16 14 DAC-08 15 5-12 4 1 Rf 2 R15 – NE5534 CONTROL LOGIC ERROR OUTPUT + REFERENCE DAC ACCURACY > 0.006% SL00003 Figure 3. Relative Accuracy Test Circuit VCC 0.1 µF 2.4 V eIN 13 +2.0 VDC 5 6 7 8 eIN 9 10 11 12 51 Ω DAC-08 14 15 1 2 4 16 15 pF 0.1 µF tPHL = tPLH = 10 ns 1.0 kΩ 1.0 kΩ 1.4 V 0.4 V 1.0 V RL SETTLING TIME 0.1 µF FOR SETTLING TIME MEASUREMENT eO (ALL BITS SWITCHED LOW TO HIGH) CO ≤ 25 pF RL = 500 Ω 0 tS = 70 ns TYPICAL TO ±1/2 LSB TRANSIENT 0 RESPONSE -100 mV 3 USE RL to GND FOR TURN OFF MEASUREMENT VEE RL = 50 Ω PIN 4 TO GND tPLH tPHL SL00004 Figure 4. Transient Response and Settling Time 2001 Aug 03 6 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DAC-08 Series TEST CIRCUITS (Continued) VCC 2V RIN 13 1 kΩ REQ = 200 Ω 5 6 14 7 15 0 VIN RP 1 8 DAC-08 9 2 10 4 11 16 OPEN 12 10% RL 0.1 µF 3 dI dt SCOPE I dV + R L dt 0 90% 2.0 mA SLEWING TIME VEE SL00005 Figure 5. Reference Current Slew Rate Measurement VCC ICC 13 I14 A1 A2 A3 A4 A5 DIGITAL INPUTS A6 A7 A8 (+) 5 R14 14 VREF (+) 6 7 15 8 1 DAC-08 9 I15 R15 2 10 VO OUTPUT 4 11 12 16 IO RL II VI C 3 IEE NOTES: (See text for values of C.) Typical values of R14 = R15 = 1 kΩ VREF = +2.0 V VEE 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 O + K Ť A1 2 where K [ ) A2 4 ) A3 8 ) A4 16 ) A5 32 ) A6 64 ) A8 A7 ) 256 128 Ť 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 2001 Aug 03 7 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) True and Complementary Output Operation Fast Pulsed Reference Operation ALL BITS ON OUTPUT CURRENT (mA) 3.2 TA = Tmin TO Tmax 2.8 2.5V 0mA VIN 2.4 V– = –15V IREF = 2mA V– = –5V 2.0 0.5V 1.0mA –0.5mA 1.6 IOUT IREF = 1mA 1.2 IOUT 2.0mA –2.5mA 0.8 IREF = 0.2mA 0.4 (00000000) 0 –14 –10 –6 –2 0 2 6 10 OUTPUT VOLTAGE (V) 14 (11111111) 200ns/division 18 REQ = 200Ω, RL = 100Ω, CC = 0 Full-Scale Settling Time Full-Scale Current vs Reference Current LSB Switching 2.4V I FS – OUTPUT CURRENT (mA) ALL BITS SWITCHED ON BIT 8 2.4V LOGIC INPUT 0.4V 0V 0.4V OUTPUT – 1/2LSB 0 SETTLING +1/2LSB 8µA IOUT 0 50ns/DIVISIOM 50ns/DIVISIOM IFS=2mA, RL=1kΩ 1/2LSB=4µA 5.0 TA = Tmin TO Tmax ALL BITS “HIGH” LIMIT FOR V–=–15V 4.0 3.0 LIMIT FOR V–=–5V 2.0 1.0 0 0 LSB Propagation Delay vs IFS 1.0 2.0 3.0 4.0 5.0 IREF — REFERENCE CURRENT (mA) Reference Input Frequency Response 500 6 RELATIVE OUTPUT (dB) 4 400 300 200 1LSB=7.8µA 100 10 5.0 2.0 1.0 0.5 0.2 0.1 .05 .02 1LSB=78nA 0 .05 .01 PROPAGATION DELAY (ns) IOUT 2 0 –2 –4 –6 –8 1 –10 RL ≤ 500Ω ALL BITS “ON” –12 VR15 = 0V –14 0.1 2 R14=R15=1kΩ 0.2 3 0.5 1.0 2.0 FREQUENCY (MHz) 5.0 10 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 50Ω connected to Pin 14. +2.0V applied to R14. Figure 7. Typical Performance Characteristics 2001 Aug 03 8 SL00007 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DAC-08 Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Logic Input Current vs Input Voltage 2.4 V– = –5V V+ = +5V IREF = 2mA 1.6 1.2 0.8 IREF = 1mA IREF = 0.2mA 0.4 0 –14 –10 –6 –2 0 2 6 10 8.0 6.0 4.0 2.0 0 –12 14 18 –8 –4 0 4 8 12 LOGIC INPUT VOLTAGE (V) V15 — REFERENCE COMMON MODE VOLTAGE (V) POSITIVE COMMON-MODE RANGE IS ALWAYS (V+) –1.5V. 1.4 16 1.2 12 Shaded area indicates permissible output voltage 8 range for V– = -15V, IREF ≤ 2.0mA 4 For other V– or IREF See “Output Current vs Output Voltage” curve on previous page 0 –4 IREF = 2.0mA B2 0.4 B3 V– = –15V V– = –5V 0 –12 –12 0 50 100 150 TEMPERATURE (°C) –8 8 7 150 ALL BITS HIGH OR LOW I– 6 5 4 3 I+ 2 1 0 –50 0 50 100 150 V+ – POSITIVE POWER SUPPLY (VDC) B4 –8 –50 B1 0.8 0.2 0 50 100 TEMPERATURE (°C) Power Supply Current vs V+ 1.0 0.6 –50 16 Bit Transfer Characteristics 20 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) Output Voltage Compliance vs Temperature 2.0 1.8 1.6 1.4 1.2 1.o 0.8 0.6 0.4 0.2 0 POWER SUPPLY CURRENT (mA) V– = –15V 2.0 VTH – VLC vs Temperature (V) TA = TMIN to TMAX 2.8 LOGIC INPUT CURRENT ( µ A) OUTPUT CURRENT (mA) 3.2 VTHLC– V Reference AMP Common-Mode Range All Bits On B5 –4 0 4 8 12 LOGIC INPUT VOLTAGE (V) 16 NOTES: 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). BITS MAY BE HIGH OR LOW I– WITH IREF = 2mA 7 6 I– WITH IREF = 1mA 5 4 I– WITH IREF = 0.2mA 3 2 I+ 1 0 0 –4.0 –8.0 –12 –16 –20 V– — NEGATIVE POWER SUPPLY (VDC) 8 BITS MAY BE HIGH OR LOW V– = +15V I– 7 Maximum Reference Input Frequency vs Compensation Capacitor Value 10,000 6 IREF = 2.0mA 5 4 3 V+ = +15V F (kHz) MAX 8 Power Supply Current vs Temperature POWER SUPPLY CURRENT (mA) POWER SUPPLY CURRENT (mA) Power Supply Current vs V– I+ 2 1 1,000 100 0 –50 0 50 100 TEMPERATURE (°C) 150 10 1 100 10 1000 CC (pF) SL00008 Figure 8. Typical Performance Characteristics (cont.) 2001 Aug 03 9 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter TYPICAL APPLICATION 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. +VREF OPTIONAL RESISTOR FOR OFFSET INPUTS RIN 0V RP RREF 14 REQ =200Ω 15 16 4 2 Output Current Range NO CAP 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. NOTES: REQ = RIN || RP Typical Values RIN = 5kΩ +VIN = 10V Pulsed Referenced Operation Accuracy 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. SL00009 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 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. 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 kΩ, 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.) 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 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. 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. 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 µF to ground. For reference voltages greater than 5.0 V, a clamp diode is recommended between Pin 14 and ground. 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 Ω 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. 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. 2001 Aug 03 DAC-08 Series 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 µF supply bypassing for low frequencies, minimum scope lead length, and avoidance of ground loops are all mandatory. 10 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 R2 = 1000Ω R1 = 1000Ω R14 = 5kΩ VREF = 10V 5 VOUT 6 7 8 9 10 11 12 14 4 IREF = 2mA VOUT DUT D1 2 15 16 3 1 C1 R15 = 5kΩ C2 D2 50Ω C5 R3 = 500Ω C4 VS – = –15V NOTES: D1, D2 = IN6263 or equivalent D3 = IN914 or equivalent C1 = 0.01µF C2, C3 = 0.1µF 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 3 4 5 6 7 LSB +VREF RREF IREF 5 (LOW T.C.) 6 7 8 9 10 11 12 14 4 IO 2 IO DAC-08 15 3 16 13 V– 1 V+ CCOMP 0.1µF 0.1µF NOTES: I FS V REF 255 x ; I O 256 R REF I O I FS for all logic states SL00011 Figure 11. Basic DAC-08 Configuration 2001 Aug 03 11 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 4 DAC-08 2 15 R3 R4 = 1MΩ V– V+ RS = 20kΩ 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 5kΩ (LOW T.C.) IR = 2mA – NE531 OR EQUIV + 4 14 15 DAC-08 2 VOUT = 0 TO +10V 5kΩ SL00013 Figure 13. Unipolar Voltage Output for Low Impedance Output 2001 Aug 03 12 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DAC-08 Series UNIPOLAR VOLTAGE OUTPUT FOR HIGH IMPEDANCE OUTPUT V = 10V 5kΩ 5kΩ VOUT 4 IR = 2mA DAC-08 14 2 VOUT a. Positive Output VOUT 4 IR = 2mA DAC-08 14 2 VOUT a. Negative Output SL00014 Figure 14. Unipolar Voltage Output for High Impedance Output BASIC BIPOLAR OUTPUT OPERATION (OFFSET BINARY) V = 10V 10kΩ 10kΩ 4 IR = 2mA DAC-08 VOUT 14 2 VOUT B1 B2 B3 B4 B5 B6 B7 B8 VOUT VOUT Positive full-scale 1 1 1 1 1 1 1 1 –9.920V +10.000 Positive FS – 1LSB 1 1 1 1 1 1 1 0 –9.840V +9.920 + Zero-scale + 1LSB Zero-scale 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 –0.080V 0.000 +0.160 +0.080 Zero-scale – 1LSB 0 1 1 1 1 1 1 1 0.080 0.000 Negative full scale – 1LSB 0 0 0 0 0 0 0 1 +9.920 –9.840 Negative full scale 0 0 0 0 0 0 0 0 +10.000 –9.920 SL00015 Figure 15. Basic Bipolar Output Operation (Offset Binary) 2001 Aug 03 13 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DIP16: plastic dual in-line package; 16 leads (300 mil) 2001 Aug 03 14 DAC-08 Series SOT38-4 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter SO16: plastic small outline package; 16 leads; body width 3.9 mm 2001 Aug 03 15 DAC-08 Series SOT109-1 Philips Semiconductors Product data 8-bit high-speed multiplying D/A converter DAC-08 Series Data sheet status Data sheet status [1] Product status [2] Definitions Objective data Development 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. Preliminary data Qualification 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. Product data Production 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. [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. Koninklijke Philips Electronics N.V. 2001 All rights reserved. Printed in U.S.A. Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 Date of release: 10-01 For sales offices addresses send e-mail to: [email protected]. Document order number: 2001 Aug 03 16 9397 750 08922