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19-1669; Rev 1; 6/03
MAX5183 Evaluation Kit
General Description
The MAX5183 evaluation kit (EV kit) is designed to simplify evaluation of the 8-bit and 10-bit, dual, 40MHz, simultaneous-update or alternate-phase-update MAX5180/MAX5183, MAX5182/MAX5185, MAX5186/ MAX5189, and MAX5188/MAX5191 digital-to-analog converters (DACs). The board contains all circuitry necessary for evaluating the dynamic performance of these high-speed converters, including a circuit to convert the DAC's differential outputs into single-ended outputs. Since the design combines high-speed analog and digital circuitry, the board layout calls for special precautions and design features. Connector pads for power supplies (AVDD, DVDD, VCC, and VEE), DAC outputs (VOUT1, VOUT1A, VOUT2, and VOUT2A), and SMA connectors for the digital and control inputs (D0-D9, CS, CLK) simplify connection to the EV kit. The four-layer board layout is optimized for best dynamic performance. The MAX5183 dual, 10-bit, 40MHz, simultaneousupdate DAC is installed on the EV kit board. The kit can be used to evaluate the MAX5180, MAX5182, MAX5185, MAX5186, MAX5188, MAX5189, or MAX5191 with minor component changes.
Features
Fast Evaluation and Performance Testing SMA Coaxial Connectors for Clock and Data Inputs Performance-Optimized Four-Layer PC Board with Separate Analog and Digital Power and Ground Connections On-Board Differential to Single-Ended Conversion Circuitry Fully Assembled and Tested with MAX5183BEEI
Evaluates: MAX5180/82/83/85/86/88/89/91
Ordering Information
PART MAX5183EVKIT TEMP RANGE 0C to +70C IC PACKAGE 28 QSOP
Component List
DESIGNATION QTY C1, C2, C11, C12 C3-C6, C9, C10, C13, C14, C19 C7, C8, C15-C18 R1-R12 R13-R24 R25-R28, R37 R29-R36 DESCRIPTION 10F 10%, 10V tantalum capacitors (A) AVX TAJA106K010R or Kemet T494A106K010AS 0.1F 10%, 25V X7R ceramic capacitors (0603) TDK C1608X7R1E104KT 0.01F 10%, 50V X7R ceramic capacitors (0603) TDK C1608X7R1H103KT or Taiyo Yuden UMK107B103KZ 49.9 1% resistors (0805) Not installed (0805) Not installed (0603) 402 1% resistors (0603) DESIGNATION QTY L1 T1, T2 U1 U2, U3 D0-D9, CLK, CS, VOUT1, VOUT1A, VOUT2, VOUT2A JU1-JU12 JU13-JU19 None None 1 2 1 2 DESCRIPTION Ferrite bead (1206) Panasonic EXC-CL3216U1 Transformers (1:8) Mini-Circuits ADT8-1T MAX5183BEEI (28-pin QSOP) MAX4108ESA (8-pin SO)
4
9
6
16
SMA PC mount vertical connectors
12 0 0 8
12 7 8 1
2-pin headers 3-pin headers Shunts (JU11, JU13-JU19) MAX5183 EV kit PC board
________________________________________________________________ Maxim Integrated Products
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For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
Quick Reference
The EV kit is delivered fully assembled, tested, and sealed in an antistatic bag. To ensure proper operation, open the antistatic bag only at a static-safe work area and follow the instructions listed below. Do not turn on the power supplies until all power connections to the EV kit are established. Figure 1 shows a typical evaluation setup for single-ended output operation: 1) Connect a -5V power supply to the pad marked VEE. Connect the supply's ground to the AGND pad. This negative supply for the MAX4108 amplifiers may also be connected to ground for singlesupply operation. 2) Connect a 3V power supply to the pad marked AVDD. Connect the supply's ground to the pad marked AGND. 3) Connect a 5V power supply to the pad marked VCC. Connect the supply's ground to the pad marked AGND. 4) Connect a 3V power supply to the pad marked DVDD. Connect the supply's ground to the pad marked DGND. 5) Verify that a shunt is connected across jumper JU11 (chip select). 6) Connect a word or pattern generator (e.g., Tektronix/Sony DG2020A) with the 10-bit digitized pattern of a sinusoidal input signal to the SMA connectors labeled D0-D9. 7) Connect an appropriate low-phase-noise clock signal generator (e.g., HP 8662A) to the CLK SMA connector. 8) Verify that shunts are connected across pins 2 and 3 of jumpers JU16, JU17, JU18, and JU19. 9) Connect an oscilloscope or a spectrum analyzer (e.g., HP 8560E) to the VOUT1A and VOUT2A SMA connectors to analyze the output waveforms. 10) Ensure jumpers JU13, JU14, JU15 are configured to the default settings as shown in Tables 1, 2. 11) Turn on the supplies and signal sources.
fCLK = 40MHz CLK HP 8662A CLOCK SOURCE SYNC DG2020 CS CONTROL SIGNAL
located in the signal path of the digital inputs to DGND. Optionally, 50 termination resistors to DGND may be installed by the user.
DAC Differential Outputs
The MAX5180/MAX5182/MAX5186/MAX5188 currentoutput DACs are designed to supply full-scale output currents of 1mA into 400 loads, in parallel with a capacitive load of 5pF. The MAX5183/MAX5185/ MAX5189/MAX5191 voltage-output DACs have on-chip 400 resistors that restore the array currents to proportional, differential voltages of 400mV full scale. These differential output voltages are then used to drive a transformer or a low-distortion, high-speed operational amplifier (such as the MAX4108 devices and transformers supplied in the EV kit, Figure 2) to convert the differential voltage into a single-ended voltage. The single-ended outputs may be derived from amplifiers outputs VOUT1A and VOUT2A or from transformers outputs VOUT1 and VOUT2 (Tables 3, 4). The MAX5183 EV kit is shipped with the necessary external circuitry to operate the installed MAX5183 voltage-output DAC. The full-scale output current-set resistor (R37) and the 402 conversion resistors (R25-R28) are not required for any of the voltage-output DACs and are therefore not installed on the MAX5183 EV kit.
AVDD VCC AGND
3V ANALOG SUPPLY 5V ANALOG SUPPLY ANALOG GROUND -5V ANALOG SUPPLY POWER SUPPLIES DIGITAL GROUND 3V DIGITAL SUPPLY
PATTERN/WORD DIGITAL GENERATOR INPUTS D0-D7*/D0-D9**
MAX5183 VEE EV Kit
DGND DVDD VOUT1 VOUT2
Detailed Description
Digital Inputs
The MAX5183 EV kit board includes high-frequency SMA connectors and 2-pin headers JU1-JU12 for the digital data, clock, and control-line inputs (D0-D9, CS, CLK). Each of these matched-impedance signal lines provides on-board series 50 termination resistors
DIGITAL SCOPE OR SPECTRUM ANALYZER
*APPLIES TO 8-BIT VERSIONS: MAX5186/MAX5188/MAX5189/MAX5191. **APPLIES TO 10-BIT VERSIONS: MAX5180/MAX5182/MAX5183/MAX5185.
Figure 1. Typical EV Kit Test Setup for Single-Ended Operation
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MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
DAC Reference Options
The MAX5183 family features an on-chip 1.2V precision bandgap reference, which can be activated by connecting the reference enable pin REN to DGND. For this purpose, jumper JU15 must remain in location 2-3 (Table 1), which is the default location used when the board is shipped. To disable the internal reference, connect REN to DVDD by placing jumper JU15 in location 1-2. A temperaturestable external reference may now be applied at the REFO pad to set the full-scale current/voltage output.
Table 1. Selecting Reference Mode
REN JUMPER (JU15) POSITION 1-2 2-3* REFERENCE MODE Connect external precision reference at REFO. Internal 1.2V bandgap reference active
*Indicates default jumper state
Standby Mode
To place the DAC in standby mode (Table 2), connect digital inputs PD and DACEN to DGND by setting jumpers JU13 and JU14 to locations 2-3. In standby, both the reference and the control amplifier are active, with the current array inactive. To exit this condition, pull DACEN high with PD held at DGND by leaving jumper JU14 in location 2-3 and changing jumper JU13 to location 1-2.
Table 2. Selecting Operating Mode
PD JUMPER (JU14) POSITION 1-2 2-3 2-3* X = Don't care *Indicates default jumper state DACEN JUMPER (JU13) POSITION X 2-3 1-2* OPERATING MODE Shutdown Standby Normal operation
Shutdown Mode
For lowest power consumption, the MAX5183 EV kit provides a shutdown mode (Table 2) in which the reference, control amplifier, and current array are inactive and the converter's supply current is reduced to 1A. To enter this mode, connect PD to DVDD by changing jumper JU14 to location 1-2. To return to active mode, connect PD to DGND by changing jumper JU14 to location 2-3, and connect DACEN to DVDD by changing jumper JU13 to location 1-2.
Table 3. Single-Ended Signal for DAC1 Selection
JU16 JU17 POSITION POSITION EV KIT FUNCTION DAC1 differential output converted to single-ended signal using transformer configuration available at VOUT1 SMA connector DAC1 differential output converted to single-ended signal using operational amplifier configuration available at VOUT1A SMA connector
Power Supplies
The EV kit features separate analog (AVDD) and digital (DVDD) power and ground connections for best dynamic performance. A 2.7V to 3.3V source connected to AVDD and DVDD is required for normal operation. It is not necessary to connect the analog and digital grounds together externally. The two grounds are connected together at a single point on the MAX5183 EV kit (at ferrite bead L1). An additional 5V source is required when using the differential to single-ended operational amplifier conversion circuitry. Connect the +5V terminal to the VCC pad and the -5V terminal to the VEE pad. Connect the ground terminal to the AGND pad.
1-2
1-2
2-3
2-3
Table 4. Single-Ended Signal for DAC2 Selection
JU18 JU19 POSITION POSITION EV KIT FUNCTION DAC2 differential output converted to single-ended signal using transformer configuration available at VOUT2 SMA connector DAC2 differential output converted to single-ended signal using operational amplifier configuration available at VOUT2A SMA connector
Evaluating the MAX518x Family
The MAX5183 EV kit may be used to evaluate other MAX518x family 8-bit and 10-bit dual DACs. The changes required for this are listed in Table 5. When evaluating the MAX5186/MAX5189 (dual, 8-bit DACs with simultaneous update) and the MAX5188/ MAX5191 (dual, 8-bit DACs with alternate-phase update), input data bits D0 and D1 must be connected to DGND to ensure proper operation. Install shunts on jumpers JU1 and JU2 to connect D0 and D1 to GND.
1-2
1-2
2-3
2-3
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MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
Board Layout
The EV kit is a 4-layer board design (Table 6), optimized for high-speed signals. The EV kit board uses FR4 epoxy dielectric material with a relative dielectric constant of r = 4.2 to 4.9. A proper FR4 design requires 14mils foil thickness for each 1oz copper layer and 0.1mm dielectric thickness between the layers. All high-speed signals are routed through 50 impedance-matched transmission lines. The line width for these signal lines is 14mils, with a ground plane height of 8mils. The board layout separates the analog and digital portions of the circuit. Matched 50 impedance transmission lines are used for all high-speed digital inputs. The digital inputs are arranged in a half circle to match the line lengths between DAC inputs and the pattern and clock generators' SMA connectors. The lengths of these 50 transmission lines are matched to within 50mils to minimize layout-dependent data skew. Wherever large ground planes are used, care is taken to ensure that the analog planes do not overlap with any digital planes. This eliminates the possibility of capacitively coupling digital noise through the circuit board to sensitive analog areas.
Table 5. Evaluating All Dual, 8-Bit/10-Bit DACs in the MAX518x Family
DEVICE INSTALLED ON THE EV KIT MAX5180 MAX5182 MAX5183* MAX5185 MAX5186 MAX5188 MAX5189 MAX5191 *As shipped R25-R28, R37 Installed Installed Not installed Not installed Installed Installed Not installed Not installed
Table 6. EV Kit PC Board Layers
LAYER Layer I, top DESCRIPTION Components, jumpers, SMA connectors, digital 50 microstrip lines, 50 termination resistors, DVDD, VCC Analog (AGND) and digital (DGND) ground Analog (AVDD) and digital (DVDD) power Components, 50 termination resistors, AVDD, VEE
Layer II, analog and digital ground plane Layer III, analog and digital power plane Layer IV, bottom
Component Suppliers
SUPPLIER AVX Kemet Panasonic Taiyo Yuden TDK PHONE 843-946-0238 864-963-6300 714-373-7366 800-348-2496 847-803-6100 FAX 843-626-3123 864-963-6322 714-737-7323 847-925-0899 847-390-4405 WEBSITE www.avxcorp.com www.kemet.com www.panasonic.com www.t-yuden.com www.component.tdk.com
Note: Please indicate that you are using the MAX5183 when contacting these component suppliers.
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MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
AVDD DVDD
C8 0.01F
C7 0.01F C18 0.01F AVDD VCC R29 402 1% 3 R36 402 1% R30 402 1% 3 2 1 R31 402 1% R26 OPEN JU17 1 2 3 R25 OPEN JU16 2 C6 0.1F 1
C5 0.1F C9 0.1F 22 DVDD CREF2 28 C10 0.1F 2 OUT1P OUT2N 26 JU19 1 2 3 R27 OPEN R32 402 1% R34 402 1% 3 2 R28 OPEN JU18 1 R35 402 1% C16 0.01F
AVDD
5 AVDD CREF1
VEE
VOUT1
1 2 3
T1
6 5 4 VOUT1A 6
7 8
U2 MAX4108
5 4
U3 MAX4108
4 6 VOUT2A 5 6
T2
3 2 1 VOUT2
5 4
2
3 R33 402 1% 7
8
C17 0.01F
VEE
VCC
3 OUT1N
OUT2P
27
C15 0.01F
REF0
25 C19 0.1F
REF0
DVDD 1 2 3 7 R11 49.9 JU11 R23 OPEN 9 R24 OPEN 10 JU13
U1 MAX5183
6 DACEN
REFR
24
R37 OPEN
DVDD 1 2 3 CS SMA 2 1 JU14
D9
21 R22 OPEN
R10 49.9 JU10
D9
PD D8
20 R21 OPEN 19 R20 OPEN 18 R19 OPEN 17 R18 OPEN 16 R17 OPEN
R9 49.9 JU9
D8
8
CS
R8 49.9 JU8
D7
CLK SMA 2 DVDD 1 2 3 SMA 2 JU15
1 JU12
R12 49.9
D7 CLK N.C.
R7 49.9 JU7
D6
D6
11 D0 R1 49.9 JU1 R13 OPEN 13 R14 OPEN 14 R15 OPEN VCC AVDD AVDD AGND C1 10F 10V C3 0.1F
REN
1
12
R6 49.9 JU6
D5
D0
D5
D1 SMA 2
1 JU2
R2 49.9
R5 49.9 JU5 R4 49.9 JU4 R16 OPEN
D4
D1
D4
D2 SMA 2
1 JU3
R3 49.9
D2
D3
15
D3
AGND 4 L1
DGND 23 DGND DVDD C2 10F 10V C4 0.1F DVDD VEE C12 10F 10V C14 0.1F VEE
VCC C11 10F 10V C13 0.1F
Figure 2. MAX5183 EV Kit Schematic _______________________________________________________________________________________ 5
MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
Figure 3. MAX5183 EV Kit Component Placement Guide-- Component Side
Figure 4. MAX5183 EV Kit Component Placement Guide-- Solder Side
Figure 5. MAX5183 EV Kit PC Board Layout--Component Side (Layer I)
Figure 6. MAX5183 EV Kit PC Board Layout--Ground Planes (Layer II)
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MAX5183 Evaluation Kit Evaluates: MAX5180/82/83/85/86/88/89/91
Figure 7. MAX5183 EV Kit PC Board Layout--Power Planes (Layer III)
Figure 8. MAX5183 EV Kit PC Board Layout--Solder Side (Layer IV)
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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