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19-0473 Rev 0 2 / 96

MAX196 Evaluation Kit

19-0473 Rev 0 2 / 96
MAX196 Evaluation Kit
o Stand-Alone Demo o Proven PC Board Layout o User Prototype Area o Fully Assembled and Tested o Jumper-Selectable Configuration
Evaluates: MAX196 / MAX198
PART MAX196EVKIT-DIP TEMP. RANGE +25°C BOARD TYPE Through-Hole
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
MAX196 Evaluation Kit Evaluates: MAX196 / MAX198
Table 1. Default Jumper Settings
JUMPER JU1 JU2 JU3 JU4 (PD1) JU5 (PD0) JU7 (RNG) JU8 (BIP) JU9 (A2) JU10 (A1) JU11 (A0) JU12 SETTING Short (default trace) Short (default trace) Short (default trace) Short Open Open Open Short Short Short Short (default trace)
Stand-Alone Demo Circuit Operation
SYSTEM CLOCK
WR INT
tCONV
Figure 1. MAX196 Stand-Alone Demo Circuit Timing Diagram
MAX196 Evaluation Kit
Optional Input Buffers
Evaluates: MAX196 / MAX198
Table 4. Channel Selection
JU9 (A2) Short Short Short Short Open Open JU10 (A1) Short Short Open Open Short Short JU11 (A0) Short Open Short Open Short Open CHANNEL CH0 CH1 CH2 CH3 CH4 CH5
Using an External Clock
As shipped from the factory, the MAX196 EV kit uses C1 as a timing capacitor for internal clock mode. To use an external clock, cut JU1 and apply the external clock source to the EXTCLK input pad. Start up the kit with JU4 (PD1) and JU5 (PD0) shorted.
Configuring the MAX196
Tables 2, 3, and 4 show the jumper connections for the different operating modes of the MAX196 EV kit. Refer to Table 2 for clock and power-down modes, Table 3 for input range selection, and Table 4 for channel selection.
Evaluating the MAX198
To evaluate the MAX198, remove the MAX196 and replace it with a MAX198BCNI.
Table 2. Clock and Power-Down Selection
JU4 (PD1) Short Short Open Open JU5 (PD0) Short Open Short Open JU1 Open Short X X FUNCTION No power-down, external clock mode No power-down, internal clock mode Standby power-down between readings Full power-down between readings
Interfacing to a 16-Bit Bus
The MAX196 / MAX198 are designed to connect directly to a 16-bit µP bus using standard chip-select (CS), read strobe (RD), and write strobe (WR) signals. JU2, JU3, and JU12 must be cut to disable the stand-alone circuit (Table 5). All interface signals are provided on header H1. For interface details, refer to the MAX196 / MAX198 data sheet.
Table 5. Demo Circuit Jumpers
JU2 JU3 Short Open JU12 Short Open MODE Stand-alone demo Connect to a userprovided system Short Open
Table 3. Range and Polarity Selection
Evaluates: MAX196 / MAX198
MAX196 Evaluation Kit
Figure 2. MAX196 EV Kit Schematic
13 12 CH5 HI-Z OPAMPVC10 0.1µF INT +5V 74HC74 CH3 R17, 100k RD DEMO +5V +5V +5V +5V +5V +5V RD DEMO +5V +5V 6 D3 JU8 7 D2 JU9 8 D1 JU10 9 D0 JU11 DIRECT INPUTS HI-Z INPUTS 5 D4 JU7 CH0 1
74HC04 BYPASS CAPACITORS +5V
74HC04
C11 0.1µF
C12 0.1µF
C13 0.1µF
C14 0.1µF D1 D0 CH4
C15 0.1µF
C16 0.1µF
H1-13 H1-12 H1-11 H1-10 H1-9 H1-8 H1-7 H1-6 H1-5 H1-4 H1-3 H1-2
28 CLK DGND VDD 27 CS WR D11 WR 26 H1-15 25 RD H1-16 U1 D10 RD 24 INT H1-17 D9 INT MAX196 23 D8 REF 22 D7 REF ADJ 21 D6 CH5 20 D5 CH4 19 D4 CH3 18 D3 CH2 17 D2 CH1 16 D1 CH0 15 D0 GND
MXL1014 6 7 + 5 U4D, U4B, U4A 2 1 + 3
CH4 HI-Z
2 D7 JU4 3 D6 JU6 WR DEMO 4 D5 R16 10k CH1
CH3 HI-Z
+5V 13 10 9 6 13 10 9 6 3 2 3 2 1 U9A 74HC04 1 U8A 74HC04 5 U8C 74HC04 11 U8E 74HC04 11 U9E 74HC04 D11 D10 D9 D8
D11 12 U9F 74HC04
R4-R15, 620
CH2 HI-Z
D9 8 U9D 74HC04 5 U9C 74HC04 12 U8F 74HC04
MXL1014 6 7 + 5 U5D, U5B, U5A
CH1 HI-Z
CH0 HI-Z
D2 8 U8D 74HC04 4 U8B 74HC04
D6 4 U9B 74HC04
MAX196 Evaluation Kit Evaluates: MAX196 / MAX198
Figure 3. MAX196 EV Kit Component Placement Guide-Component Side
MAX196 Evaluation Kit Evaluates: MAX196 / MAX198
Figure 4. MAX196 EV Kit PC Board Layout-Component Side
MAX196 Evaluation Kit Evaluates: MAX196 / MAX198
Figure 5. MAX196 EV Kit PC Board Layout-Solder Side
MAX196 Evaluation Kit Evaluates: MAX196 / MAX198
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