MAX5223 19-1895 Rev 0 1/01 Low-Power, Dual, 8-Bit, Voltage Output Serial DAC in 8-Pin SOT23 General Description Features The MAX5223 contains two 8-bit, buffered, voltage out- Tiny 8-Pin SOT23 Package (3mm 3mm) put digital-to-analog converters (DAC A and DAC B) in a Low Power Consumption small 8-pin SOT23 package. DAC outputs can source 100A Operating Current and sink 1mA to within 100mV of ground and V . The DD <1A Shutdown Current MAX5223 operates with a single +2.7V to +5.5V supply. +2.7V to +5.5V Single-Supply Operation The device uses a 3-wire serial interface, which oper- ates at clock rates up to 25MHz and is compatible with Dual Buffered Voltage Output SPI, QSPI, and MICROWIRE interface standards. Programmable Shutdown Mode The serial input shift register is 16 bits long and con- 25MHz, 3-Wire Serial Interface sists of 8 bits of DAC input data and 8 bits for DAC selection and shutdown control. DAC registers can be SPI, QSPI, and MICROWIRE-Compatible loaded independently or in parallel at the positive edge of CS. The MAX5223s ultra-low power consumption and tiny 8-pin SOT23 package make it ideal for portable and Ordering Information battery-powered applications. Supply current is a low PART TEMP. RANGE PIN-PACKAGE 100A and drops below 1A in shutdown mode. In addition, the reference input is disconnected from the MAX5223EKA-T -40C to +85C 8 SOT23 REF pin during shutdown, which reduces the systems total power consumption. Applications Functional Diagram Digital Gain and Offset Adjustment Programmable Current Source Programmable Voltage Source 0.22 F 0.1 F (OPTIONAL) Power Amp Bias Control V 83DIN DD 7 REF VCO Tuning SCLK 4 OUTA V OUTA DAC 5 Pin Configuration DAC A LATCH A TOP VIEW OUTB V OUTB DAC 6 DAC B LATCH B 1 8 CS DIN CS 1 2 MAX5223 7 GND REF MAX5223 3 6 V OUTB DD 4 5 SCLK OUTA 2 GND SOT23-8 SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. 16-BIT SHIFT REGISTER CONTROL (8) DATA (8)Low-Power, Dual, 8-Bit, Voltage Output Serial DAC in 8-Pin SOT23 ABSOLUTE MAXIMUM RATINGS V to GND............................................................. -0.3V to +6V Operating Temperature Range ...........................-40C to +85C DD All Other Pins to GND (Note 1).................. -0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +150C A 8-Pin SOT23 (derate 8.7mW/C above +70C)............696mW Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, REF = V , T = T to T , unless otherwise noted. Typical values are at T = +25C.) DD DD A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCE Resolution N 8 Bits Integral Nonlinearity INL I = 250A (Note 2) 0.3 1 LSB LOAD Differential Nonlinearity DNL Guaranteed monotonic, I = 250A (Note 2) 0.2 1 LSB LOAD Total Unadjusted Error TUE 1 LSB Zero-Code Offset V 10 mV ZS Zero-Code Temperature TC 100 V/C VZS Coefficient 4.5V V 5.5V, V = 4.096V, DD REF 1 I = 250A LOAD Power Supply Rejection Ratio PSRR mV/V 2.7V V 3.6V, V = 2.4V, DD REF 1 I = 250A LOAD REFERENCE INPUT Reference Input Voltage Range GND V V DD Reference Input Capacitance 25 pF Reference Input Resistance R (Note 3) 816 k REF Reference Input Resistance 50 M (Shutdown Mode) DAC OUTPUTS Output Voltage Range I = 0 0 REF V LOAD Capacitive Load at OUT 100 pF Output Resistance 500 DIGITAL INPUTS Input High Voltage V 0.7 x V V IH DD Input Low Voltage V 0.3 x V V IL DD Input Current I V = 0 or V 0.1 10 A IN IN DD Input Capacitance C (Note 4) 10 pF IN 2 MAX5223