Document
19-1582; Rev 2; 12/01
8-Bit, 40MHz, Current/Voltage-Output DACs
MAX5187/MAX5190
General Description
The MAX5187 is an 8-bit, current-output digital-to-analog converter (DAC) designed for superior performance in signal reconstruction or arbitrary waveform generation applications requiring analog signal reconstruction with low distortion and low-power operation. The voltage-output MAX5190 provides equal specifications, with on-chip precision resistors for voltage output operation. Both devices are designed for a 10pVs glitch operation to minimize unwanted spurious signal components at the output. An on-board +1.2V bandgap circuit 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 operation: normal, low-power standby, and full shutdown, which provides the lowest possible power dissipation with a 1µA (max) shutdown current. A fast wake-up time (0.5µs) from standby mode to full DAC 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 (-40°C to +85°C) temperature range. For higher resolution, 10-bit versions, see the MAX5181/MAX5184 data sheet.
Applications
Signal Reconstruction
Digital Signal Processing
Arbitrary Waveform Generation (AWG)
Imaging Applications
Features
o +2.7V to +3.3V Single-Supply Operation o Wide Spurious-Free Dynamic Range:
70dB at fOUT = 2.2MHz o Fully Differential Output o Low-Current Standby or Full Shutdown Modes o Internal +1.2V Low-Noise Bandgap Reference o Small 24-Pin QSOP Package
PART MAX5187BEEG MAX5190BEEG
Ordering Information
TEMP. RANGE -40°C to +85°C -40°C to +85°C
PIN-PACKAGE 24 QSOP 24 QSOP
Pin Configuration
TOP VIEW
CREF 1 OUTP 2 OUTN 3 AGND 4 AVDD 5 DACEN 6
PD 7 CS 8 CLK 9 REN 10 DGND 11 DGND 12
MAX5187 MAX5190
QSOP
24 REFO 23 REFR 22 DGND 21 DVDD 20 D7 19 D6 18 D5 17 D4 16 D3 15 D2 14 D1 13 D0
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX5187/MAX5190
8-Bit, 40MHz, Current/Voltage-Output DACs
ABSOLUTE MAXIMUM RATINGS
AVDD, DVDD to AGND, DGND .................................-0.3V to +6V Digital Input to DGND...............................................-0.3V to +6V OUTP, OUTN, CREF to AGND .................................-0.3V to +6V VREF to AGND ..........................................................-0.3V to +6V AGND to DGND.....................................................-0.3V to +0.3V AVDD to DVDD.....................................................................±3.3V Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (TA = +70°C) 24-Pin QSOP (derate 9.50mW/°C above +70°C)........762mW
Operating Temperature Ranges MAX5187BEEG/MAX5190BEEG ....................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C
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
(AVDD = DVDD = +3V ±10%, AGND = DGND = 0, fCLK = 40MHz, IFS = 1mA, 400Ω differential output, CL = 5pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
STATIC PERFORMANCE
Resolution
N
8 Bits
Integral Nonlinearity
INL
-1 ±0.25 +1
LSB
Differential Nonlinearity
DNL Guaranteed monotonic
-1 ±0.25 +1
LSB
Zero-Scale Error
MAX5182 MAX5191
-1 +1 LSB
-4 +4
Full-Scale Error
(Note 1)
-20 ±4 +20 LSB
DYNAMIC PERFORMANCE
Output Settling Time
To ±0.5LSB error band
25 ns
Glitch Impulse
10 pVs
Spurious-Free Dynamic Range to Nyquist
SFDR
fCLK = 40MHz
fOUT = 550kHz fOUT = 2.2MHz, TA = +25°C
57
72 70
dBc
Total Harmonic Distortion to Nyquist
THD
fCLK = 40MHz
fOUT = 550kHz fOUT = 2.2MHz, TA = +25°C
-70 dB
-68 -63
Signal-to-Noise Ratio to Nyquist
SNR
fCLK = 40MHz
fOUT = 550kHz fOUT = 2.2MHz, TA = +25°C
46
52 52
dB
Clock and Data Feedthrough Output Noise
All 0s to all 1s
50 nVs 10 pA/√Hz
AANNAALLOOGG OOUUTTPPUUTT
Full-Scale Output Voltage
VFS
400 mV
Voltage Compliance of Output
-0.3 0.8 V
Output Leakage Current
DACEN = 0, MAX5187 only
-1 1 µA
Full-Scale Output Current
IFS MAX5187 o.