MAX5187/MAX5190 19-1582 Rev 2 12/01 8-Bit, 40MHz, Current/Voltage-Output DACs General Description Features The MAX5187 is an 8-bit, current-output digital-to-ana- +2.7V to +3.3V Single-Supply Operation log converter (DAC) designed for superior performance Wide Spurious-Free Dynamic Range: in signal reconstruction or arbitrary waveform genera- 70dB at f = 2.2MHz tion applications requiring analog signal reconstruction OUT with low distortion and low-power operation. The volt- Fully Differential Output age-output MAX5190 provides equal specifications, Low-Current Standby or Full Shutdown Modes with on-chip precision resistors for voltage output oper- ation. Both devices are designed for a 10pVs glitch Internal +1.2V Low-Noise Bandgap Reference operation to minimize unwanted spurious signal com- Small 24-Pin QSOP Package ponents at the output. An on-board +1.2V bandgap cir- cuit provides a well-regulated, low-noise reference that can be disabled for external reference operation. The MAX5187/MAX5190 are designed to provide a high level of signal integrity for the least amount of power dissipation. They operate from a single supply of +2.7V to +3.3V. Additionally, these DACs have three modes of Ordering Information operation: normal, low-power standby, and full shut- down, which provides the lowest possible power dissi- PART TEMP. RANGE PIN-PACKAGE pation with a 1A (max) shutdown current. A fast MAX5187BEEG -40C to +85C 24 QSOP wake-up time (0.5s) from standby mode to full DAC MAX5190BEEG -40C to +85C 24 QSOP operation allows for power conservation by activating the DAC only when required. The MAX5187/MAX5190 are packaged in a 24-pin QSOP and are specified for the extended (-40C to +85C) temperature range. For higher resolution, 10-bit versions, see the MAX5181/MAX5184 data sheet. Pin Configuration Applications Signal Reconstruction TOP VIEW Digital Signal Processing CREF 1 24 REFO Arbitrary Waveform Generation (AWG) OUTP 2 23 REFR Imaging Applications OUTN 3 22 DGND AGND 4 21 DV DD AV 5 20 D7 DD MAX5187 DACEN 6 19 D6 MAX5190 PD 7 18 D5 CS 8 17 D4 CLK 9 16 D3 REN 10 15 D2 DGND 11 14 D1 DGND 12 13 D0 QSOP Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.8-Bit, 40MHz, Current/Voltage-Output DACs ABSOLUTE MAXIMUM RATINGS AV , DV to AGND, DGND .................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD DD A Digital Input to DGND...............................................-0.3V to +6V 24-Pin QSOP (derate 9.50mW/C above +70C)........762mW OUTP, OUTN, CREF to AGND .................................-0.3V to +6V Operating Temperature Ranges V to AGND ..........................................................-0.3V to +6V MAX5187BEEG/MAX5190BEEG ....................-40C to +85C REF AGND to DGND.....................................................-0.3V to +0.3V Storage Temperature Range .............................-65C to +150C AV to DV .....................................................................3.3V Lead Temperature (soldering, 10s) .................................+300C DD DD Maximum Current into Any Pin............................................50mA 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 (AV = DV = +3V 10%, AGND = DGND = 0, f = 40MHz, I = 1mA, 400 differential output, C = 5pF, T = T to T , DD DD CLK FS L A MIN MAX unless otherwise noted. Typical values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STATIC PERFORMANCESTATIC PERFORMANCE Resolution N 8 Bits Integral Nonlinearity INL -1 0.25 +1 LSB Differential Nonlinearity DNL Guaranteed monotonic -1 0.25 +1 LSB -1 +1 MAX5182 Zero-Scale Error LSB MAX5191 -4 +4 Full-Scale Error (Note 1) -20 4 +20 LSB DYNAMIC PERFORMANCEDYNAMIC PERFORMANCE Output Settling Time To 0.5LSB error band 25 ns Glitch Impulse 10 pVs f = 550kHz 72 Spurious-Free Dynamic Range OUT SFDR f = 40MHz dBc CLK to Nyquist f = 2.2MHz, T = +25C 57 70 OUT A f = 550kHz -70 OUT Total Harmonic Distortion THD f = 40MHz dB CLK to Nyquist f = 2.2MHz, T = +25C -68 -63 OUT A f = 550kHz 52 Signal-to-Noise Ratio OUT SNR f = 40MHz dB CLK to Nyquist f = 2.2MHz, T = +25C 46 52 OUT A Clock and Data Feedthrough All 0s to all 1s 50 nVs Output Noise 10 pA/Hz ANALOG OUTPUT ANALOG OUTPUT Full-Scale Output Voltage V 400 mV FS Voltage Compliance of Output -0.3 0.8 V Output Leakage Current DACEN = 0, MAX5187 only -1 1 A Full-Scale Output Current I MAX5187 only 0.5 1 1.5 mA FS DAC External Output Resistor R MAX5187 only 400 L Load 2 MAX5187/MAX5190