D AC337 D ata Converter Line Adjustment-Free 8-Bit D ACs FEATURES • • • • No Zero Or Gain A djusts t/aLSB Linearity Internal Reference and Output A mplifier Low Power DESCRIPTION The DA C337 Series digital-to-analog converters are designed for completely adjustment-free operation. The word “ simplicity” best characterizes the DA C337 Series. A ll models are housed in hermetically sealed DIP style packages and operate on ±15V power supplies. Each model incorporates a precision reference, highly stable thin-film nichrome resistor network, output amplifier, and switches. ±1/2 LSB li nearity is achieved without the use of external zero and gain adjustment circuits. Four output voltage ranges are offered — 0 to +10, 0 to –10 (unipolar) and ±5, ±10 (bipolar). Spectrum Microwave offers the DAC337 for industrial and commercial applications. FUNCTIONAL DIAGRAM GND – 15V 6(7) GND 7(8) +15V 8(9) 9(10) GND 10(11) – + INTERNA L REF RESISTOR NETW ORK 5 (6) – SW ITCHES + 1 2 3 4 11 12 13 14 NC M EA NS NO CONNECTION BIT 1 2 M SB 3 4 5 6 V OLTA GE OUTPUT 7 8 165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168 www.SpectrumMicrowave.com BIPOLA R ONLY PIN OUTS n - DA C337-0, -1, -2, -6 DAC337 SPECIFICATIO N S (Typical for all models @ +25º C and nominal power supplies unless otherwise noted) SERIES DA C337 TY PE Fixed Ref., V olt, Output DA C337 -0, -1, -2, -6 0.475 M A X (12.065) DIGITA L INPUT Resolution Coding DA C337-0 DA C337-1,6 DA C337-2 Logic Compatibility V IH = 2.4V typ., 3.5V min. V IH = 0.8V max. 8 Bits Complementary Binary Offset Binary Binary TTL, DTL, CM OS (from 5V supply) 0.010 ±0.002 (0.457 ±0.050) 0.300 (7.620) 0.10 (2.54) RED DOT INDICA TES PIN 1 REFERENCE 0.155 M A X (3.937) 0.100 TY P (2.540) 0 to –10V @ –5mA +5V +5mA 0 to +10V @ +5mA ±10V @ +5mA <0.1 APPLICATIO N IN FO RMATIO N Internal RECOM M ENDED POW ER SUPPLY BY -PA SS CIRCUIT TOP V IEW STA TIC PERFORM A NCE Integral Linearity Differential Linearity 0.220 M IN (5.588) 0.800 M A X (20.320) A NA LOG OUTPUT V oltage DA C337-0 DA C337-1 DA C337-2 DA C337-6 Impedance DIM ENSIONS INCHES (mm) +15 ±1/2 LSB, max. ±1/2 LSB, typ.; ±1 LSB.max. + 1µF 0.10 (2.54) COM + 0.01µF 1µF – 15 0.01µF DY NA M IC PERFORM A NCE Settling Time to 1/2 LSB for Full Scale Change DA C337–0,–1,–2 20µs DA C337-6 40µs For 1 LSB change 5µs typ.; 10µs max Slew Rate 0.5V /µs STA BILITY (T M IN TO T M A X ) A ccuracy Linearity Offset 1LSB ±1/1 LSB, max. ±1 LSB, max. POW ER SUPPLY V oltage @ Current Power Supply Rejection Ratio +15V ±20% @ +6mA , max. –15V ±20% @ –13mA , max. +15V Supply, 0.1% FSR/V oIt –15V Supply, 0.2% FSR/V oIt TEM PERA TURE RA NGE Operating Storage 0ºC to +70ºC –65ºC to +150ºC M ECHA NICA L Case Style M etal or ceramic at manufacturer's option PIN 1 2 3 4 5 6 7 FUNCTION BIT1 (M SB) BIT 2 BIT 3 BIT 4 OUTPUT GND -15V PIN 14 13 12 11 10 9 8 FUNCTION BIT 8 (LSB) BIT 7 BIT 6 BIT 5 N.C. +15V GND PIN 9 PIN 10 PIN 6,8 PIN 7,9 PIN 7 (8BIT) PIN 8 (10 BIT) TRA NSFER CHA RA CTERISTICS DA C337 INPUT PINS 11111111 10000000 11111111 11111111 1111111111 1000000000 0 111111111 0000000000 337 – 0 0V – 4.961V – 5V – 9.961V –1 +5V +0.040V 0 – 4.961V TRA NSFER CHA RA CTERISTICS A NA LOG OUTPUT –2 –6 – 9.961V +10V +5V +0.080V +4.961V 0V 0V – 9.921V 0V +5V – 4.961V +0.010V 5V 0V – 9.990V – 4.990V +9.990V +5V +4.990V 0V +10V +0.020V 0V – 9.980V CA UTION: ESD (Electro-Static Discharge) sensitive device. Permanent damage may occur when unconnected devices are subjected to high energy electrostatic fields. Unused devices must be stored in conductive foam or shunts. Protective foam should be discharged to the destination socket before devices are removed. Devices should be-handled at static safe workstations only. Unused digital inputs must be grounded or tied to the logic supply voltage. Unless otherwise noted, the supply voltage at any digital input should never exceed the supply voltage by more than 0.5 volts or go betow –0.5 volts. If this condition cannot be maintained, limit input current on digital inputs by using series resistors or contact SatCon for technical assistance. Specifications subject to change without notice.