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19-0342; Rev 1; 7/96
MAX101A Evaluation Kit
_______________General Description
The MAX101A evaluation kit (EV kit) was developed to assist in the initial evaluation of the MAX101A highspeed analog-to-digital converters (ADCs). The EV kit is a two-board set comprised of a main board and a termination board. The main board contains all the circuitry needed to evaluate the initial performance of this flash converter, which combines high-speed analog and digital circuitry and requires special attention to circuit layout. In conjunction with the MAX101A, the main board allows digitizing of analog signals at up to 500Msps. It has provisions for an external clock source, which is supplied through an SMA connector. The analog inputs to the converter are through two SMA connectors (AIN+ and AIN-). There are 16 data outputs (two 8-bit words) plus the data clock output. A separate termination board with 50 ECL pull-down resistors is provided with the kit and is connected to the main board with a 3x32 pin EURO-card connector. It provides access to the converter output data, as well as proper ECL termination. The termination board also has two ranks of square pins, each providing eight data outputs, plus data clock outputs. Either AData or BData can be observed with a high-speed logic analyzer. Standard power supplies of +5V and -5.2V are needed to operate the MAX101A main board. Power can be supplied through the 3x32 EURO-card connector or through the pads on the edge of the board. Nominal power dissipation for both boards is 17W. The board set comes fully assembled and tested, with the MAX101A installed. The MAX101A EV kit comes with a MAX101A installed on the board, but it can also be used to evaluate the MAX101. Refer to instructions for setting references and input conditions for the appropriate device version throughout this document.
____________________________Features
o 7.0 Effective Bits at 250MHz o On-Board Reference Generator/Buffer o 50 Input through SMA Coaxial Connectors o Dual Differential-Output Data Paths o 270mV Input Signal Range (MAX101) 250mV Input Signal Range (MAX101A) o Buffered Differential 100k ECL Outputs o 3x32 Pin EURO-Card Connector
Evaluates: MAX101/MAX101A
______________Ordering Information
PART MAX101AEVKIT-CFR TEMP. RANGE 0C to +70C BOARD TYPE Surface Mount
____________________Component List
DESIGNATION C1, C2, C4, C6, C7, C9, C10, C12, C14, C15, C18, C20, C23, C26, C27, C29, C31, C32, C34, C36, C38, C40, C42 C3, C5, C11, C13 C8, C16, C30, C33, C35, C37, C39, C41, C43 C17, C21, C24 C19, C22, C25 QTY DESCRIPTION
23
0.01F capacitors
4 9 3 3
0.22F capacitors 100pF capacitors 0.1F capacitors 10F capacitors, AVX "D" tantalum 100mA Schottky diodes, Central Semiconductor CMPSH-3 3-pin jumper block Female SMA connectors 96-pin EURO-style plug Ferrite beads 180, 1% resistors 121, 1% resistors 100 trim pots 51, 5% resistors
D1-D4 DIV 10 J1, J2, J3 J5 L1, L2 R1, R12 R2, R13, R23 R3, R4, R14, R15 R5, R16, R38, R39
4 1 3 1 2 2 3 4 4
Component List continued on next page.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
_______Component List (continued)
DESIGNATION R6, R7, R17, R18 R8, R9, R19, R20 R10, R11, R21, R22 R24, R34, R36 R25 R26 R27 R28, R29, R40-R55 R35, R37 U1 U2, U4 U3, U5 U6 U8, U21-U24 QTY 4 4 4 3 1 1 1 18 2 1 2 2 1 5 DESCRIPTION 20, 5% resistors 12.1k, 1% resistors 27.4, 1% resistors 82.5, 1% resistors 1k, 1% resistor 2k trim pot 3.16k, 1% resistor 100, 5% resistors 221, 1% resistors Maxim MAX101ACFR Maxim MAX412CPA highspeed dual op amps Maxim MX580KH 2.5V references LM337T negative voltage regulator MC100E116 quintuple line receivers
_______________Detailed Description
Board Set
The MAX101A EV kit is a two-board set. The main board contains ECL-interface circuitry and the MAX101A ADC. The termination board provides high-speed signal termination and access to the digital data. For further signal processing, the main board can be plugged into a larger system board via the provided EURO-card connector.
Clock Input
The external clock input is capacitively coupled to an onboard bias network. Take care to ensure that the pulse width is within the specified requirements: clock input levels should be -4dBm to +10dBm, and clock frequency can range from 250MHz to 500MHz. Figure 1 in the MAX101A data sheet shows the necessary timing requirements for the clock input, as well as the expected output clock waveforms. The clock input should be driven by a low-jitter RF signal source. Refer to Figures 1, 2, and 3 of the MAX101A data sheet for more information.
Analog Input
Analog input to the MAX101A is made through one or both of the two SMA coaxial connectors provided (AIN+ and AIN- inputs). Each input is a direct connection to the ADC, with internal 50 terminations provided by the MAX101A.
_________________________Quick Start
1) 2) 3) Plug the termination board into the 96-pin connector of the MAX101A main board. Use a fan to provide at least 200 lineal feet/min airflow to the heatsink of the MAX101A. Connect the power supplies. The power-supply input pads are in the lower right-hand corner of the MAX101A main board. The board requires a 20W power supply that provides +5V and -5.2V with a common ground. Turn on the -5.2V power supply first, followed by the +5V power supply. The -5.2V power supply should be the first supply turned on and the last supply turned off. Connect a low-phase-jitter RF source with a level range of -4dBm to +10dBm to the clock input. Connect a test signal to the analog inputs. Use IN+ and IN- if the signal is differential, or IN+ if the signal is single-ended (270mV (MAX101), 250mV (MAX101A) differential; see the MAX101 or MAX101A data sheet). Observe the digitized results on the termination board pins by using a logic analyzer, such as the HP16500 series or an equivalent data-acquisition system. The outputs are 100k ECL compatible.
Outputs
The MAX101A main board has two 8-bit-wide digital outputs that are 100k ECL compatible. Each data output is buffered by 100E116 line receivers. There is also a data clock output (DCLK) provided for timing. All 17 outputs provided to the EURO-card connector are differential and unterminated. The termination board provides a termination for each data line, through 50 to -2V.
4)
ADC Reference Resistor String
An on-board reference supply and op-amp circuit drive the ADC reference resistor string. The reference supplies can be adjusted using the four potentiometers on the board (see the Calibration Procedure). It is important to ensure that a reverse bias condition never occurs on the reference inputs. Schottky diode clamps on the reference amp outputs help protect the MAX101A.
5) 6)
DIV 10
The jumper DIV 10 selects the operating mode of the MAX101A, which can output data either at full speed or at 1/10 the clock rate. This feature is valuable during initial testing. DIV 10 is usually left open for normal (full-
7)
2
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MAX101A Evaluation Kit
speed) operation. microstrip lines have a signal trace width of 0.010 inch (0.25mm). Refer to Motorola's MECL or ECLinPS data book for an introduction to interconnect design. Due to the high-speed nature of this part, the propagation delay of the PC board traces becomes a significant design consideration. For the EV kit design, the propagation delay is approximately 145ps per inch (5.7ps/mm). For best results, try to match the lengths of the data traces to within 0.5 inch (12mm). The clock signal must be routed on one layer only, without using any through-hole vias. The MAX101A EV kit is a controlled impedance board (50 and 100) and has a total board thickness of 0.062 inches (1.57mm) using six copper layers (see Figure 1, the Layer Profile).
Evaluates: MAX101/MAX101A
Power Supplies
The following supplies are required for normal operation of the main board: VCC = +5V at 0.8A VEE and VAA = -5.2V at 2.5A These voltages should be supplied to the connector pins for VCC, VEE, and VAA, respectively. VEE and VAA are connected on the board with a ferrite bead. If system noise must be reduced, you may remove this bead and then provide the analog supply, VAA, separately from the digital supply, VEE. The -5.2V power supply should be the first supply turned on and the last supply turned off.
Board Layout
The MAX101A requires proper PC board layout for device operation. This section explains the layout requirements and demonstrates how the EV kit achieves these goals. Use power and ground planes to deliver power to the device, keeping the digital planes separate from the analog planes. The EV kit uses layers 3, 4, and 5 for power and ground planes. Tie digital ground and analog ground to a single point, as close to the power supply as possible. On the EV kit, digital ground ties to analog ground at ferrite bead L1. Likewise, tie digital power (VEE) and analog power (VAA) to a single point, as close to the power supply as possible. On the EV kit, digital power ties to analog -5.2V power at ferrite bead L2. Use transmission lines for the analog input, clocks, and high-speed digital outputs. The MAX101A EV kit uses microstrip lines of two different impedances. The MAX101A data outputs drive differential line drivers through 100 microstrip lines. The 50 microstrip lines occupy layers 1 and 2. The 100 microstrip lines occupy layers 1 and 3, with layer 2 void. The kit uses FR4 epoxy dielectric material, whose relative dielectric constant is between 4.1 and 4.9. The nominal design is 0.0014 inch (0.0355mm) foil thickness for each copper layer, and 0.011 inch (0.28mm) dielectric thickness between layers. The 50 microstrip lines have a signal trace width of 0.020 inch (0.50mm), and the 100
Evaluating the MAX101
The MAX101A EV kit also can be used to evaluate the MAX101. To use the MAX101, refer to specific instructions in the Quick Start, Applications Information, and Calibration Procedure sections.
Copper thickness = 0.0007" (12 oz copper) (microstrip signals) Dielectric layer thickness = 0.011" Copper thickness = 0.0014" (1 oz copper) (50 microstrip return; ground plane) Dielectric layer thickness = 0.011" Copper thickness = 0.0014" (1 oz copper) (100 microstrip return; ground plane) Dielectric layer thickness = 0.011" Copper thickness = 0.0014" (1 oz copper) (VCC/VTT power plane) Dielectric layer thickness = 0.011" Copper thickness = 0.0014" (1 oz copper) (VEE/VAA power plane) Dielectric layer thickness = 0.011" Copper thickness = 0.0014" (1 oz copper) (DC signal layer)
Copper Layer 1 Epoxy FR4 Copper Layer 2 Epoxy FR4 Copper Layer 3 Epoxy FR4 Copper Layer 4 Epoxy FR4 Copper Layer 5 Epoxy FR4 Copper Layer 6
Figure 1. MAX101A Evaluation Board Layer Thickness Profile
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3
MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
__________Applications Information
Analog Input
The main board digitizes single-ended signals by choosing either input and leaving the other input either open or terminated in the system characteristic impedance. In this mode the unused input can provide a DC offset to the incoming signal. (See the Electrical Characteristics in the MAX101A data sheet for this DC voltage range.) To obtain a digital output of all ones (11....1) with differential input drive for the MAX101, 270mV must be applied between AIN+ and AIN-. That is, AIN+ = +135mV and AIN- = -135mV (when no DC offset is applied). Mid-scale digital output code occurs when there is no voltage difference across the analog inputs. Zero-scale digital output code, with differential drive for the MAX101, occurs when AIN+ = -135mV and AIN- = +135mV. The output of the converter stays at all ones (full scale) or all zeros (zero scale) when overranged or underranged, respectively. Tables 1a and 1b show these relationships for both the MAX101 and the MAX101A. phase. The two 8-bit-wide data paths are buffered by 100E116 line receivers, which provide a differential output, available at the connector. If the termination board is not used, the user must provide proper ECL termination at the EURO-card connector.
Input Reference-Resistor Strings
Operational amplifiers are used to drive the top and bottom inputs of each of the ADC reference resistor chains. A 2.5V reference is resistor-divided down and buffered through two MAX412CPA op amps. (The relatively low input impedance of each string, 120, will draw approximately 17mA.) The reference voltage is set at the factory for either the MAX101 or MAX101A. This reference controls the comparator input windows, and can be adjusted between 1.20V to accommodate input requirements. (Accuracy specifications are guaranteed with a reference of 1.02V (MAX101) or 0.95V (MAX101A).)
Testing
We recommend that a digital acquisition instrument like the HP16500 series of logic analyzers be used to acquire and process the output data. At Maxim, the data acquired from the converter is evaluated in an effective-bits software program developed in-house. The effective-bits measurement is a good tool to determine and compare ADC accuracy. See the MAX101A data sheet for more details on effective-bits testing.
Digital Outputs
Data from the ADC is interleaved and is output on alternate clock phases. One 8-bit word is output during one clock phase and the other is output on the alternate clock
Table 1a. MAX101 Input Voltage Range
INPUT AIN+* +135mV 0 -135mV +270mV 0 -270mV AIN-* -135mV 0 +135mV 0 0 0 OUTPUT CODE 11111111 10000000 00000000 11111111 10000000 00000000 MSB TO LSB full scale mid scale zero scale full scale mid scale zero scale
_____________Calibration Procedure
The MAX101 EV kit comes calibrated and ready to operate from the factory. If other MAX101A devices are to be used in the same fixture, the EV kit should be recalibrated according to the following procedure: 1) With the ADC removed, adjust the +5V and -5.2V power supplies. 2) Adjust the PHASE potentiometer (R26) to a nominal voltage of 0V. A test point (TP1) for this voltage measurement is located near the potentiometer. 3) With the power off, insert the MAX101A into the board. The device's heatsink fits down through the board, and its leads rest on top of the board. Take care to place the part in the board with Pin 1 in the correct location. Pin 1 is indicated by a small dot near the U1 device designation. 4) Turn the power on, observing proper sequencing, and let the part warm up for several minutes. Use a fan to ensure 200 lineal feet/min airflow. Repeat Step 2.
Differential
Single Ended
Table 1b. MAX101A Input Voltage Range
INPUT AIN+* +125mV 0 -125mV +250mV 0 -250mV AIN-* -125mV 0 +125mV 0 0 0 OUTPUT CODE 11111111 10000000 00000000 11111111 10000000 00000000 MSB TO LSB full scale mid scale zero scale full scale mid scale zero scale
Differential
Single Ended
*An offset VIO, as specified in the DC Electrical Characteristics, will be present at the input. Compensate for this offset by either adjusting the reference voltages VART, VARB, VBRT ,VBRB, or introduce an offset voltage in one of the input terminals, AIN+ or AIN-. 4
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MAX101A Evaluation Kit
5) After the part has warmed up for several minutes, adjust the reference voltages to the values shown in Tables 2a and 2b. These tables list the reference voltages, the trim pots that control the reference voltages, and the measurement points. Adjust the A converter mid-code level. With no analog input (AIN+ - (AIN-) = 0V), the output code should match that specified in Table 1. If there is an offset, adjust either the positive or negative reference (R3 or R4) until the expected code of 10 00 00 00 (MSB to LSB) is achieved. After adjusting to the proper level, the references need to be balanced to the proper values shown in Tables 2a and 2b, around any offset that was introduced. (If the negative reference was moved by +32mV, the positive reference must be moved by that same amount to ensure the correct LSB size.) It may be necessary to repeat the reference offset adjustment again after the correct differential reference voltage is re-established around a common-mode offset. Repeat Step 6 for the B converter reference voltages. (The adjustment pots of the B converter are R14 and R15.) Adjust the phase potentiometer (R26) for best effective bits performance (optional). While digitizing a pure sine-wave input, compute the effectivebits performance of the interleaved output data. Good performance can be achieved with the PHADJ voltage set to 0V (Step 2); however, maximum performance can be achieved by adjusting the sampling delay with R26 as required.
Evaluates: MAX101/MAX101A
Table 2a. MAX101 Reference Adjustments
REFERENCE CONVERTER VOLTAGE +1.02V -1.02V +1.02V -1.02V A A B B TRIM POT R3 R4 R14 R15 MEASURE AT DEVICE SIDE OF: R5 R8 R16 R19
6)
Table 2b. MAX101A Reference Adjustments
REFERENCE CONVERTER VOLTAGE +0.95V -0.95V +0.95V -0.95V A A B B TRIM POT R3 R4 R14 R15 MEASURE AT DEVICE SIDE OF: R5 R8 R16 R19
7)
8)
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5
MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
R63 DRVA A0 A1 A2 A3 A4 A5 A6 ZO = 100 GND ZO = 100 ZO = 100 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 VCC A0 A1 A2
1
2
REF-A VARTS VARBS VART VARB PHASE PHASE
OPTIONAL 50 1 GND R62 2 R38 VTT 50 R39 VTT 50 AGND J1 SMA AGND VAA AGND ZO = 50 AGND ZO = 50 AGND AGND VAA VCC AGND AGND PHASE J3 SMA 1 AGND AGND VCC 1 R36 82.5 1% TP1 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
OPTIONAL 50 AGND AGND VCC AGND
N.C. CLK CLK GND TRK1 TRK1 GND VCC VARB VARBS TP2 TP1 VARTS VART GND N.C. A0 GND A1 A2 VCC
SMA J2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
PAD CLK CLK GND TRK1 TRK1 GND VCC VBRB VBRBS TP4 TP3 VBRTS VBRT GND N.C. B0 GND B1 B2 VCC
GND TP5 TP6 GND GND VEE GND GND AIN+ AIN+ GND AINAINGND GND GND VEE VCC GND PHADJ GND
U1 MAX101A
NOTE MECHANICAL REQUIREMENTS
A3 A4 GND A5 A6 GND A7 DIV10 GND DCLK VEE DCLK GND SUB B7 GND B6 B5 GND B4 B3
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
ZO = 100 ZO = 100 GND ZO = 100 ZO = 100
A3 A4 A5 A6 A7
GND ZO = 100 DIV10 GND ZO = 100 VAA GND VAA ZO = 100 ZO = 100
B7 B6 B5 B4 B3
GND ZO = 100 ZO = 100 GND ZO = 100 ZO = 100
GND AGND
VTT R28 100 5 11 ZO = 50 ZO = 50 6 REF-B VBRTS VBRBS VBRT VBRB VTT VCC ZO = 100 ZO = 100 ZO = 50 ZO = 50 TRKDRVB B0 B1 B2 B3 B4 B5 B6 B7 GND ZO = 100 B2 B1 B0 R29 100 12 U22B MC100E116 PCK NCK
2 ZO = 50 C31 0.01F R35 221 1% 2 VEE 1
2 R34 82.5 ZO = 50 1% 25 26 1 R37 221 1%
17
ZO = 50 ZO = 50
18 U8D MC100E116
2
POWER VCC AGND GND VTT VEE VAA
TRK-
SMA J5 (OPTIONAL)
SMA J4 (OPTIONAL)
DIV10 1 2 DIV10 JUMPER 2 3 N.C.
GND
GND
Figure 2. MAX101A EV Kit Schematic
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
96-PIN EURO CONNECTOR
BYPASS NEAR PIN 8: VCC C29 0.01F C30 100pF AGND BYPASS NEAR PIN 21: VCC C32 0.01F C33 100pF AGND BYPASS NEAR PIN 43: VCC C36 0.01F C37 100pF AGND GND PA7 PB7 PB6 PB5 PB4 BYPASS NEAR PIN 56: VCC C38 0.01F C39 100pF AGND BYPASS NEAR PIN 32: VAA C34 0.01F C35 100pF GND BYPASS NEAR PIN 69: VAA C42 0.01F C43 100pF AGND J5-A29 BYPASS NEAR PIN 80: VAA C40 0.01F C41 100pF AGND AGND J5-A30 J5-A31 J5-A32 AGND J5-B30 J5-B31 J5-B32 AGND J5-C30 J5-C31 J5-C32 AGND J5-B29 J5-C29 VCC J5-A28 J5-B28 J5-C28 VCC VAA VEE J5-A22 J5-A23 J5-A24 J5-A25 J5-A26 J5-A27 J5-B22 J5-B23 J5-B24 J5-B25 J5-B26 J5-B27 J5-C22 J5-C23 J5-C24 J5-C25 J5-C26 J5-C27 VAA VEE PB3 PB2 PB1 PB0 VTT PA0 PA1 PA2 PA3 PA4 PA5 PA6 PCK DATA J5-A1 J5-A2 J5-A3 J5-A4 J5-A5 J5-A6 J5-A7 J5-A8 J5-A9 J5-A10 J5-A11 J5-A12 J5-A13 J5-A14 J5-A15 J5-A16 J5-A17 J5-A18 J5-A19 J5-A20 DIV10 J5-A21 J5-B1 J5-B2 J5-B3 J5-B4 J5-B5 J5-B6 J5-B7 J5-B8 J5-B9 J5-B10 J5-B11 J5-B12 J5-B13 J5-B14 J5-B15 J5-B16 J5-B17 J5-B18 J5-B19 J5-B20 J5-B21 NA7 NB7 NB6 NB5 NB4 NB3 NB2 NB1 NB0 NA0 NA1 NA2 NA3 NA4 NA5 NA6 NCK DATA J5-C1 J5-C2 J5-C3 J5-C4 J5-C5 J5-C6 J5-C7 J5-C8 J5-C9 J5-C10 J5-C11 J5-C12 J5-C13 J5-C14 J5-C15 J5-C16 J5-C17 J5-C18 J5-C19 J5-C20 J5-C21 LABEL VTT A0 A1 A2 A3 A4 A5 A6 CLOCK DGND A7 B7 B6 B5 B4 B3 B2 B1 B0 MODE
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
PHASE
VAA
R25 1k, 1% VCC 1 +VS VOUT U3 MX580KH TO-52 GND 3 C1 0.01F C2 0.01F +2.5VREF-A 2
R26 2k C27 0.01F AGND
R27 3.16k, 1%
R5 50, 5% VARTS 2 C4 0.01F 1 R6 20, 5% R10 27.4, 1% VART C3 0.22F AGND R8 12.1k, 1% VARBS C6 0.01F 7 R7 20, 5% R11 27.4, 1% VARB C5 0.22F AGND D2 CMPSH-3 AGND D1 CMPSH-3 AGND
U2A
3 ADJREF+1A
MAX412CPA DIP8
R1 180 1%
AGND
R3 100
R4 100
ADJREF-1A R9 12.1K 1% R2 121 1% AGND
6
U2B
5
MAX412CPA DIP8
AGND ADJREF+1A VCC C7 0.01F VAA C8 100pF 8 MAX412CPA
U2
4
DIP8
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
VCC 1 +VS VOUT U5 GND 3 C9 0.01F MX580KH TO-52 C10 0.01F 3 ADJREF+1B 2 +2.5VREF-B 2 C12 0.01F 1 R17 20, 5%
R16 50, 5% VBRTS
R21 27.4, 1% VBRT
U4A
MAX412CPA DIP8
R12 180 1%
C11 0.22F AGND R19 12.1k, 1%
D3 CMPSH-3 AGND
AGND
VBRBS ADJREF-1B R14 100 R15 100 R20 12.1k, 1% R13 121 1% AGND AGND ADJREF+1B VCC C15 0.01F VAA C16 100pF 8 MAX412CPA 5 6 C14 0.01F 7 R18 20, 5% R22 27.4, 1% VBRB C13 0.22F AGND D4 CMPSH-3 AGND
U4B
MAX412CPA DIP8
U4
4
DIP8
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
VTT A0 ZO = 100 R42, 100 ZO = 50 23 24 20 PA0 NA0 ZO = 50 ZO = 50 25 26 2 VBBU21 VTT A2 ZO = 100 R41, 100 ZO = 50 27 28 VTT A3 ZO = 100 R43, 100 14 PA2 NA2 ZO = 50 ZO = 50 5 6 11 PA3 NA3 ZO = 50 17 PA1 NA1 ZO = 50
21 U21E MC100E116
VTT A1 ZO = 100 R40, 100
18 U21D MC100E116
VBB
U21F MC100E116
15 U21C MC100E116
12 U21B MC100E116
VTT A4 ZO = 100 R44, 100 ZO = 50 23 24 20 PA4 NA4 ZO = 50 ZO = 50 25 26 2 VBBU22 VTT A6 ZO = 100 R46, 100 ZO = 50 27 28 14 PA6 NA6 ZO = 50 ZO = 50 3 4 8 PA7 NA7 ZO = 50 17 PA5 NA5 ZO = 50
21 U22E MC100E116
VTT A5 ZO = 100 R45, 100
18 U22D MC100E116
VBB
U22F MC100E116
15 U22C MC100E116
VTT A7 ZO = 100 R47, 100
9 U22A MC100E116
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
VTT B0 ZO = 100 R48, 100 ZO = 50 5 6 11 PB0 NB0 ZO = 50 ZO = 50 27 28 2 VBBU24 VTT B2 ZO = 100 R50, 100 ZO = 50 25 26 VTT B3 ZO = 100 R51, 100 17 PB2 NB2 ZO = 50 ZO = 50 23 24 20 PB3 NB3 ZO = 50 14 PB1 NB1 ZO = 50
12 U24B MC100E116
VTT B1 ZO = 100 R49, 100
15 U24C MC100E116
VBB
U24F MC100E116
18 U24D MC100E116
21 U24E MC100E116
VTT B4 ZO = 100 R52, 100 ZO = 50 5 6 11 PB4 NB4 ZO = 50 ZO = 50 27 28 2 VBBU23 VTT B6 ZO = 100 R54, 100 ZO = 50 25 26 17 PB6 NB6 ZO = 50 ZO = 50 23 24 20 PB7 NB7 ZO = 50 14 PB5 NB5 ZO = 50
12 U23B MC100E116
VTT B5 ZO = 100 R53, 100
15 U23C MC100E116
VBB
U23F MC100E116
18 U23D MC100E116
VTT B7 ZO = 100 R55, 100
21 U23E MC100E116
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
POWER-SUPPLY BYPASSING ANALOG +5.0V APOS1 VCC C19 10F 10V
ANALOG GROUND
AGND1
C16 0.01F
C17 0.1F
ANALOG -5.2V
ANEG1
C20 0.01F
C21 0.1F
C22 10F 10V
AGND
FERRITE L2 VAA
FERRITE L1 C25 10F 10V VEE
DIGITAL -5.2V
DNEG1
C23 0.01F
C24 0.1F
VTT GENERATOR
C26 0.01F 1 ADJ U6 LM337T TO-220 OUT IN 2 VEE -5.2V 3
R24 82.5 1%
GND
R23 121 1% VTT -2.0V TO TERMINATING RESISTORS
Figure 2. MAX101A EV Kit Schematic (continued)
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
Figure 3. MAX101A EV Kit Main Board Component Placement Guide--Component Side
Figure 4. MAX101A EV Kit Main Board Component Placement Guide--Solder Side
Figure 5. MAX101A EV Kit Main Board Layout--Layer 1
Figure 6. MAX101A EV Kit Main Board Layout--Layer 2 (Negative Image)
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13
MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
Figure 7. MAX101A EV Kit Main Board Layout--Layer 3 (Negative Image)
Figure 8. MAX101A EV Kit Main Board Layout--Layer 4 (Negative Image)
Figure 9. MAX101A EV Kit Main Board Layout--Layer 5 (Negative Image)
Figure 10. MAX101A EV Kit Main Board Layout--Layer 6
14
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MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
TERM BOARD MAX100EVKIT MAX101EVKIT SIGNAL SIGNAL SIGNAL T1 B0 A0 F1 B0 A0 T2 A0 A1 F2 A0 A1 T3 B1 A2 F3 B1 A2 T4 A1 A3 F4 A1 A3 T5 B2 A4 F5 B2 A4 T6 A2 A5 F6 A2 A5 T7 B3 A6 F7 B3 A6 T8 A3 DCLK F8 A3 DCLK T9 B4 A7 F9 B4 A7 T10 A4 B7 F10 A4 B7 T11 B5 B6 F11 B5 B6 T12 A5 B5 F12 A5 B5 T13 B6 B4 F13 B6 B4 T14 A6 B3 F14 A6 B3 T15 B7 B2 F15 B7 B2 T16 A7 B1 F16 A7 B1 T17 DCLK B0 F17 DCLK B0
6.000" (152.4mm)
1.18" (30mm) SQUARE
5.000" (127.0mm)
Figure 11. MAX101A EV Kit Main Board Mechanical Guide
Figure 12. MAX101A EV Kit Termination Board Component Placement Guide--Component Side
Figure 13. MAX101A EV Kit Termination Board Component Placement Guide--Solder Side
Figure 14. MAX101A EV Kit Termination Board Layout--Layer 1
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15
MAX101A Evaluation Kit Evaluates: MAX101/MAX101A
Figure 15. MAX101A EV Kit Termination Board Layout--Layer 2
Figure 16. MAX101A EV Kit Termination Board Layout--Layer 3
2.000" (50.8mm)
50 MICROSTRIP LAYER PROFILE 0.020" 1OZ COPPER 0.0014" FR4 E = 4.1-4.9 0.010" 1OZ COPPER 0.0014" FR4 E = 4.1-4.9 0.010" 0.0014" 1OZ COPPER FR4 E = 4.1-4.9 0.010" 1OZ COPPER 0.020" 0.0014"
4.500" (112.5mm)
Figure 17. MAX101A EV Kit Termination Board Layout--Layer 4
Figure 18. MAX101A EV Kit Termination Board Mechanical Guide
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.
16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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