32-Channel, 14-Bit DAC with Precision a Infinite Sample-and-Hold Mode * AD5532B FEATURES GENERAL DESCRIPTION High Integration: The AD5532B is a 32-channel, voltage output, 14-bit DAC with 32-Channel DAC in 12 mm 12 mm CSPBGA an additional precision infinite sample-and-hold mode. The Guaranteed Monotonic to 14 Bits selected DAC register is written to via the 3-wire serial inter- Infinite Sample-and-Hold Capability to 0.018% Accuracy face and V for this DAC is then updated to reflect the new OUT Infinite Sample-and-Hold Total Unadjusted Error 2.5 mV contents of the DAC register. DAC selection is accomplished via Adjustable Voltage Output Range address bits A0A4. The output voltage range is determined by Readback Capability the offset voltage at the OFFS IN pin and the gain of the DSP/Microcontroller Compatible Serial Interface output amplifier. It is restricted to a range from V + 2 V to SS Output Impedance 0.5 V 2 V because of the headroom of the output amplifier. DD Output Voltage Span 10 V The device is operated with AV = +5 V 5%, DV = +2.7 V CC CC Temperature Range 40 C to +85 C to +5.25 V, V = 4.75 V to 16.5 V, and V = +8 V to +16.5 V SS DD and requires a stable 3 V reference on REF IN as well as an APPLICATIONS offset voltage on OFFS IN. Automatic Test Equipment Optical Networks PRODUCT HIGHLIGHTS Level Setting 1. 32-channel, 14-bit DAC in one package, guaranteed Instrumentation monotonic. Industrial Control Systems Data Acquisition 2. The AD5532B is available in a 74-lead CSPBGA with a body Low Cost I/O size of 12 mm 12 mm. 3. In infinite sample-and-hold mode, a total unadjusted error of 2.5 mV is achieved by laser-trimming on-chip resistors. FUNCTIONAL BLOCK DIAGRAM DV AV REF IN REF OUT OFFS IN V V CC CC DD SS AD5532B V 0 OUT V ADC DAC IN TRACK/RESET 14-BIT BUS BUSY V 31 OUT MUX DAC DAC GND AGND OFFS OUT DAC DGND MODE INTERFACE CONTROL SER / PAR ADDRESS INPUT REGISTER WR LOGIC SCLK D D A4A0 CAL OFFSET SEL SYNC/CS IN OUT *Protected by U.S. Patent No. 5,969,657. REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties that Tel: 781/329-4700 www.analog.com may result from its use. No license is granted by implication or otherwise Fax: 781/326-8703 Analog Devices, Inc., 2002 under any patent or patent rights of Analog Devices.(V = +8 V to +16.5 V, V = 4.75 V to 16.5 V AV = +4.75 V to +5.25 V DD SS CC DV = +2.7 V to +5.25 V AGND = DGND = DAC GND = 0 V REF IN = 3 V AD5532BSPECIFICATIONS CC OFFS IN = OV Output Range from V + 2 V to V 2 V. All outputs unloaded. All specifications T to T , unless otherwise noted.) SS DD MIN MAX AD5532B-1 1 2 Parameter B Version Unit Conditions/ Comments DAC DC PERFORMANCE Resolution 14 Bits Integral Nonlinearity (INL) 0.39 % of FSR max 0.15% typ Differential Nonlinearity (DNL) 1 LSB max 0.5 LSB typ Monotonic Offset 90/170/250 mV min/typ/max See Figure 6. Gain 3.52 typ Full-Scale Error 1/+0.5 % of FSR max ISHA DC PERFORMANCE 3 V to V Nonlinearity 0.006 % typ After Offset and Gain Adjustment IN OUT 0.018 % max Total Unadjusted Error (TUE) 2.5 mV typ See TPC 6. 12 mV max Offset Error 1 mV typ 10 mV max Gain 3.51/3.52/3.53 min/typ/max ISHA ANALOG INPUT (V ) IN Input Voltage Range 0 to 3 V Nominal Input Range Input Lower Dead Band 70 mV max 50 mV typ. Referred to V . IN See Figure 7. Input Upper Dead Band 40 mV max 12 mV typ. Referred to V . IN See Figure 7. Input Current 1 A max 100 nA typ. V acquired IN on one channel. 4 Input Capacitance 20 pF typ ANALOG INPUT (OFFS IN) Input Current 1 A max 100 nA typ Input Voltage Range 0/4 V min/max Output Range Restricted from V + 2 V to V 2 V SS DD VOLTAGE REFERENCE REF IN Nominal Input Voltage 3.0 V typ 4 Input Voltage Range 2.85/3.15 V min/max Input Current 1 A max <1 nA typ REF OUT Output Voltage 3 V typ 4 Output Impedance 280 k typ 4 Reference Temperature Coefficient 60 ppm/C typ ANALOG OUTPUTS (V 031) OUT 4, 5 Output Temperature Coefficient 10 ppm/C typ 4 DC Output Impedance 0.5 typ Output Range V + 2/V 2 V min/max 100 A Output Load SS DD 4, 6 Resistive Load 5k min 4, 6 Capacitive Load 100 pF max 4 Short-Circuit Current 7 mA typ 4 DC Power-Supply Rejection Ratio 70 dB V = +15 V 5% DD 70 dB V = 15 V 5% SS 4 DC Crosstalk 250 V max Outputs Loaded ANALOG OUTPUT (OFFS OUT) 4, 5 Output Temperature Coefficient 10 ppm/C typ 4 DC Output Impedance 1.3 k typ Output Range 50 to REF IN 12 mV typ Output Current 10 A max Source Current Capacitive Load 100 pF max 2 REV. A