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FEATURES FUNCTIONAL BLOCK DIAGRAM. Four Complete 12-Bit DACs in One IC Package vod Linearity Error + 1/2LSB Tmin - Tmax (AD390K, T) ~ b Factory-Trimmed Gain and Offset Buffered Voltage Output Tr] Monotonicity Guaranteed Over Full Temperature Range n© == > Oren Double-Buffered Data Latches a, 2 v Includes Reference and Buffer = 4 pamrs: ercancs Fast Settling: 8us max to + 1/2LSB a@ = | Tf>1~~ 5 =—s rfl an ——s PRODUCT DESCRIPTION = > The AD390 contains four 12-bit high speed voltage-output aol pee . digital-to-analog converters in a compact 28-pin hybrid package. 4 Ose) The design is based on a proprietary latched 12-bit DAC chip Le 3 which reduces chip count and provides high reliability. The AD390 is ideal for systems requiring digital control of many | Lr bran. analog voltages where board space is at a premium. Such appli- BD Cascer) 19 cations include automatic test equipment, process controllers, xO | foe: <J Ga and vector-scan displays. Yo Ee OTs] as ‘The AD390 is laser-trimmed to + 1/2LSB max nonlinearity ——s Crees HED ovr (AD390KD, TD) and absolute accuracy of +0.05 percent of full scale. The high initial accuracy is made possible by the use oom Seta, of thin-film scaling resistors on the monolithic DAC chips. The internal buried Zener voltage reference provides excellent tem- TPE AD590 Gens ctarerade estas tn selene eeu perature drift characteristics (20ppm/°C) and an initial tolerance . offers a dramatic reduction in printed circuit of #0.03% maximum. The internal reference buffer allows a board space requirements in systems using multiple DACs. single common reference to be used for multiple AD390 devices 2. Each DAC is independently addressable, providing a versatile in large systems. control architecture for simple interface to microprocessors. The individual DACs are accessed by the CST-through CS4 All latch enable signals are level-triggered. control inputs and the AO and Al lines. These control signals 3. The output voltage is trimmed to a full scale accuracy of permit the registers of the four DACs to be loaded sequentially +0.05%, Settling time to + 1/2LSB is 8 microseconds and the outputs to be simultaneously updated. maamum. The AD390 outputs are calibrated for a + 10V output range 4. An internal 10 volt reference is available or an external reference with positive-true offset binary input coding. A 0 to +10V can be used. With an.external reference, the AD390 gain TC version is available on special order. is + Sppm/°C maximum. The AD390 is packaged in a 28-lead ceramic package and is 5. The proprietary monolithic DAC chips provide excellent specified for operation over the 0 to +70°C and — 55°C to + 125°C linearity and guaranteed monotonicity over the full operating temperature range. temperature fange. 6. The 28-pin double-width hybrid package provides extremely high fufictional density. No external components or adjustments are required to provide the complete function. 7. The AD390SD and AD390TD feature guaranteed accuracy and linearity over the —55°C to + 125°C temperature range. REV. A

AD. SPECIFICATIONS ‘sia coms)” “= Sune Miah secon eee! 390 _ 10 minute warmup) Model AD390JD/SD AD390KD/TD Mia Typ Max Min Typ Max Units DATA INPUTS (Pins 1-12 and 23-28)" TTLor5 Volt CMOS Input Voltage Bit ON (Logic “1”") +2.0 +55 +2.0 +55 v Bit OFF (Logic 0”) +08 +08 v Input Current (Pin 24 is 3 x Larger) Bit ON (Logic “1””) 500 1200 500 1200 nA Bit OFF (Logic “0”) 150 #0 150 408 BA RESOLUTION a OUTPUT? Voltage Range? +10 Vv Current 5 mA Settling Time (to + 4%sLSB) 4 8 ps ACCURACY Offset 0.025 £0.05 +0.012 0.025 | %ofFSR Linearity Error 214 24 +18 212 LSB Differential Linearity Error +2 23/4 +14 +12 LSB TEMPERATURE DRIFT Gain (internal reference) +40 +20 ppm/*C (external reference) +10 +5 ppm/*C Zero +10 +S ppm/*C Linearity Error Tmin-T max 212 23/4 24 212 LSB Differential Linearity MONOTONICITY GUARANTEED OVER FULL TEMPERATURE RANGE CROSSTALK? eS Se REFERENCE OUTPUT Current (available for external use) 2.5 3.5 2.5 3.5 mA REFERENCE INPUT Input Resistance a Voltage Range v POWER REQUIREMENTS Voltage® 213.5 215 +165 2135 +15 #165 v Current +Vs 20 35 20 38 mA -Vs —85 100 —85 — 100 mA POWER SUPPLY GAIN SENSITIVITY +Vs 0.002 0.006 0.002 0.006 %FS% -Vs 0,0025 0.006 0.0025 0.006 %FS% TEMPERATURE RANGE Operating (Full Specifications)J, K t) +70 0 +70 °c s,T SS +125 -55 +225 c Storage 65 +150 -65 +150 c NOTES ‘Timing specifications appear in Table 2.

2 The AD390 outputs are guaranteed stable for lod capacitances up to 300pF,

= 10V range is standard. A 0 to 10V version is also available. To order, use the following part numbers: ‘ADS0207-1 JGrde ADS0207-2 K Grade ADS0207-3 SGrade ‘ADS0207-4 TGrade ‘ADS0207-7 $/883B Grade ‘ADS0207-8 ‘T/883B Grade ‘FSR means Full Scale Range and is equal to 20V for a + 10V range. Crosstalk is defined as the change in any one output asa result of any other output being driven from — 10V to + 10Vintoa 2kf losd. “The AD390 can be used with supply voltage as lowas = 11.4V, Figure 10, Specifications subject to change without notice. REV.A

ABSOLUTE MAXIMUM RATINGS Analog Outputs (Pins 16, 18-21) +VstoDGND ...-.- eee eee ee ee ee Oto +18V ste ee eee eee ess Indefinite Short to AGND or DGND AGND toDGND 20. 0.52 cece ee eee ee 206V ORDERING GUIDE Temperature GainError | LinearityError | Package Modei Range 25°C Tenia Trax Option* AD390JD Oto + 70°C +4LSB +3/4LSB DH-28 AD390KD Oto + 70°C +2LSB +1/2LSB DH-28 AD390SD -SS°Cto +125°C | +4LSB +3/4LSB DH-28 AD390TD -S5°Cto + 125°C | +2LSB +1/2LSB DH-28 *DH-28 = Side Brazed Ceramic DIP for Hybrid. For outline information see Package Information section. PIN CONFIGURATION (usejoee [7] ° ok oe: (2 } [27] css oz (3 | [26] cz oes (7] [2] csi ose (8) poe) [24] &o oes [EY TOP VIEW ey ves (7) (Not to Seale) (EE) +ve os7 [8] [27] Yours oes (3) [20] Yours: oes [70] (33) Your: ero [17] [18] Yours (mise) oat) [72 ] [7] ner ano [13] [7e] nerour -“s 14] [75] acno