NE5410F

Philips Semiconductors Linear Products Product specification 10-Bit high-speed multiplying D/A converter NE/SE5410 DESCRIPTION The NE5410/SE5410 are 10-bit Multiplying Digital-to-Analog Converters pin- and function-compatible with the industry-standard MC3410, but with improved performance. These are capable of high-speed performance, and are used as general-purpose building blocks in cost effective D/A systems. The NE/SE5410 provides complete 10-bit accuracy and differential non-linearity over temperature, and a wide compliance voltage range. Segmented current sources, in conjunction with an R/2R DAC, provide the binary weighted currents. The output buffer amplifier and voltage reference have been omitted to allow greater speed, lower cost, and maximum user flexibility. PIN CONFIGURATION F Package VEE 1 GND 2 OUTPUT 3 D1 (MSB) 4 D2 5 D3 6 D4 7 D5 8 16 VREF+ 15 V – REF 10 14 V CC 13 D (LSB) 12 D9 11 D8 10 D7 9 D6 TOP VIEW FEATURES • Pin- and function-compatible with MC3410 • 10-bit resolution and accuracy (±0.05%) • Guaranteed differential non-linearity over temperature • Wide compliance voltage range—-2.5 to +2.5V • Fast settling time—250ns typical • Digital inputs are TTL- and CMOS-compatible • High-speed multiplying input slew rate—20mA/µs • Reference amplifier internally-compensated • Standard supply voltages +5V and -15V APPLICATIONS BLOCK DIAGRAM MSB LSB D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 4 5 6 7 8 9 10 11 12 13 3 CURRENT SWITCHES IO LADDER TERMINATORS R-2R LADDER • Successive approximation A/D converters • High-speed, automatic test equipment • High-speed modems • Waveform generators • CRT displays • Strip CHART and X-Y plotters • Programmable power supplies • Programmable gain and attenuation ORDERING INFORMATION DESCRIPTION 16-Pin Ceramic Dual In-Line Package (CERDIP) 16-Pin Ceramic Dual In-Line Package (CERDIP) VREF(+) VREF(–) 16 15 BIAS CIRCUITRY REFERENCE CURRENT AMPLIFIER 1 VEE 2 GND 14 VCC TEMPERATURE RANGE 0 to +70°C -55 to +125°C ORDER CODE NE5410F SE5410F DWG # 0582B 0582B August 31, 1994 767 853-0945 13721 Philips Semiconductors Linear Products Product specification 10-Bit high-speed multiplying D/A converter NE/SE5410 ABSOLUTE MAXIMUM RATINGS TA=+25°C, unless otherwise specified. SYMBOL VCC VEE VI VO IREF(16) VREF VREF(D) TA Digital input voltage Applied output voltage Reference current Reference amplifier inputs Reference amplifier differential inputs Operating temperature range SE5410 NE5410 TJ TSTG PD Junction temperature Ceramic package Storage temperature Maximum power dissipation TA=25°C (still-air)1 +150 -65 to +150 1190 °C °C mW -55 to +125 0 to +70 °C °C Power supply PARAMETER RATING +7.0 -18 +15 +4, -5.0 2.5 VCC, VEE 0.7 UNIT VDC VDC VDC VDC mA VDC VDC NOTES: 1. Derate above 25°C at the following rate: F package at 9.5mW/°C DC ELECTRICAL CHARACTERISTICS (Continued) VCC=+5.0VDC, VEE=-15VDC, IREF=2.0mA, all digital inputs at high logic level. SE5410: TA=-55°C to +125°C, NE5410 Series: TA=0°C to +70°C, unless otherwise noted. SYMBOL ∈R PARAMETER Relative accuracy (Error relative to full scale IO) Differential non-linearity Settling time to within ±1/2 LSB (all bits low to high) Propagation delay time Output full-scale current drift Digital input logic levels (all bits) High level, Logic “1” Low level, Logic “0” Digital input current (all bits) High level, VIH = 5.5V Low level, VIL = 0.8V Reference input bias current (Pin 15) Output current (all bits high) Output currents (all bits low) Output voltage compliance Reference amplifier slew rate Reference amplifier settling time Output current power supply sensitivity Output capacitance VO = 0 0 to 4.0mA, ±0.1% VREF = 2.000V, R16 = 1000Ω TA = 25°C TA = 25°C ∈R < 0.050% relative to full-scale 20 2.0 0.003 25 0.01 3.937 –1.0 3.996 0 2.0 Over temperature TEST CONDITIONS Over Temperature LIMITS Min Typ ±0.025 ±1/4 ±0.025 ±1/4 tS tPLH tPHL TCIO VIH TA = 25°C TA = 25°C 250 35 20 20 40 Max ±0.05 ±1/2 ±0.05 ±1/2 UNIT % LSB % LSB ns ns ppm/°C VDC 0.8 20 –20 –5.0 4.054 0.4 –2.5 +2.5 µA µA mA µA VDC mA/µs µs %/% pF IIH IIL IREF(15) IOH IOL VO SR IREF ST IREF PSRR(–) CO August 31, 1994 768 Philips Semiconductors Linear Products Product specification 10-Bit high-speed multiplying D/A converter NE/SE5410 DC ELECTRICAL CHARACTERISTICS VCC=+5.0VDC, VEE=-15VDC, IREF=2.0mA, all digital inputs at high logic level. SE5410: TA=-55°C to +125°C, NE5410 Series: TA=0°C to +70°C, unless otherwise noted. SYMBOL CI ICC IEE VCC VEE PARAMETER Digital input capacitance (all bits high) Power supply current (all bits low) Power supply voltage range Power consumption TA = 25°C VO = 0 +4.75 –14.25 TEST CONDITIONS LIMITS Min Typ 4.0 +2 –12 +5.0 –15 190 +4 –18 +5.25 –15.75 300 Max UNIT pF mA VDC mW 4.0 ICC IEEPOWER SUPPLY CURRENT (mA) 13 12 11 10 4 3 2 1 0 –75 –50 –25 +ICC +VCC = +5V –VEE = –15V IREF = 2mA IEE OUTPUT CURRENT (mA) 3.0 +VCC = +5V 2.0 –VEE = –15V TA = 25°C 1.0 IREF = 2mA 0 –1.0 –5 –3 –1 0 1 3 COMPLIANCE VOLTAGE (VOLT) 5 0 25 50 75 100 125 TA (°C) Figure 1. Output Current vs Output Compliance Voltage OUTPUT COMPLIANCE VOLTAGE (VOLTS) 4.0 3.0 2.0 1.0 0 –1.0 –2.0 –3.0 –4.0 –75 –50 –25 +VCC = +5V –VEE = –15V IREF = 2mA Figure 3. Power Supply Currents vs Temperature 0 25 50 75 100 125 TA (°C) Figure 2. Maximum Output Compliance Voltage vs Temperature Figure 4. Reference Amplifier Frequency Response An on-chip high slew reference current amplifier drives the R/2R ladder and segment decoder. The currents are scaled in such a way that, with all bits on, the maximum output current is two times 1023/1024 of the reference amplifier current, or nominally 3.996mA for a 2.000mA reference input current. The reference amplifier allows the user to provide a voltage input: out-board resistor R16 (see Figure 6) converts this voltage to a usable current. A current mirror doubles this reference current and feeds it to the segment decoder and resistor ladder. Thus, for a reference voltage of 2.0V and a 1kΩ resistor tied to Pin 16, the full-scale current is CIRCUIT DESCRIPTION The NE5410 consists of four segment current sources which generate the 2 Most Significant Bits (MSBs), and an R/2R DAC implemented with ion-implanted resistors for scaling the remaining 8 Least Significant Bits (LSBs) (see Figure 5). This approach provides complete 10-bit accuracy without trimming. The individual bit currents are switched ON or OFF by fully-differential current switches. The switches use current steering for speed. August 31, 1994 769 Philips Semiconductors Linear Products Product specification 10-Bit high-speed multiplying D/A converter NE/SE5410 approximately 4.0mA. This relationship will remain regardless of the reference voltage polarity. Connections for a positive reference voltage are shown in Figure 6a. For negative reference voltage inputs, or for bipolar reference voltage inputs in the multiplying mode, R15 can be tied to a negative voltage corresponding to the minimum input level. For a negative reference input, R16 should be grounded (Figure 6b). In addition, the negative voltage reference must be at least 3V above the VEE supply voltage for best operation. Bipolar input signals may be handled by connecting R16 to a positive voltage equal to the peak positive input level at Pin 15. When a DC reference voltage is used, capacitive bypass to ground is recommended. The 5V logic supply is not recommended as a reference voltage. If a well regulated 5.0V supply, which drives logic, is to be used as the reference, R16 should be decoupled by connecting it to the +5.0V logic supply through another resistor and (4) MSB D1 (5) D2 (6) D3 (7) D4 bypassing the junction of the two resistors with a 0.1µF capacitor to ground. The reference amplifier is internally-compensated with a 10pF feed-forward capacitor, which gives it its high slew rate and fast settling time. Proper phase margin is maintained with all possible values of R16 and reference voltages which supply 2.0mA reference current into Pin 16. The reference current can also be supplied by a high impedance current source of 2.0mA. As R16 increases, the bandwidth of the amplifier decreases slightly and settling time increases. For a current source with a dynamic output impedance of 1.0MΩ, the bandwidth of the reference amplifier is approximately half what it is in the case of R16=1.0kΩ, and settling time is ±10µs. The reference amplifier phase margin decreases as the current source value decreases in the case of a current source reference, so that the minimum reference current supplied from a current source is 0.5mA for stability. (13) LSB D10 GND (2) (8) D5 (9) D6 (10) D7 (11) D8 (12) D9 IOUT (3) SEGMENT DECODER VBIAS (INTERNAL) 2R 2R 2R 2R 2R 2R 2R 2R R R R R R R (16) + VREF + CODE SELECTED 0111110011 (15) – – 2R1 R1 R1 R1 R1 VEE (1) Figure 5. NE5410 Equivalent Circuit August 31, 1994 770 Philips Semiconductors Linear Products Product specification 10-Bit high-speed multiplying D/A converter NE/SE5410 VR (+) RT R16 VCC D1 THROUGH D10 14 16 R15 15 IO 5410 3 and full-scale current drift. Relative accuracy, or linearity, is the measure of each output current with respect to its intended fraction of the full-scale current. The relative accuracy of the NE5410 is fairly constant over temperature due to the excellent temperature tracking, of the implanted resistors. The full-scale current from the reference amplifier may drift with temperature causing a change in the absolute accuracy. However, the NE5410 has a low full-scale current drift with temperature. The SE5410 and the NE5410 are accurate to within ± LSB at 25°C with a reference current of 2.0mA on Pin 16. 1 2 NOTES: VEE R16 + RT = R15 = RREF RT <