Application Note 1753 ISL28617VYXXEV1Z Users Guide supply voltages for the three standard boards. For more Introduction information, reference Setting the Power Supply Voltages on The ISL28617VYXXEV1Z evaluation board is designed to assess page 13 of the ISL28617 data sheet. the ISL28617 instrumentation amplifiers (in-amp) performance If the user wants to control the output supplies separately, the R3 with Bulk Metal Foil resistors from Vishay Precision Group. With and R5 resistors must be removed, and the V (TP2) and V CO EO a differential input voltage range up to 34V, a supply voltage range (TP6) test points are used for the positive output supply and of 8V (4V) to 40V (20V) and gain ranging from 0.1 to 10,000, negative output supply respectively (reference evaluation board this precision in-amp is ideal for a wide variety of applications. It schematic in Figure 4). Single supply operation requires features differential inputs and outputs, and can drive the output removing R7 and attaching the desired common mode voltage to rail-to-rail. The gain accuracy is limited only by the matching of the V (TP10) test point. Using the separate supply feature REF the gain resistors. Reference: Vishay Precision Groups foil enables input signals riding on a high common mode voltage to be resistors at Application Note 1753 TABLE 2. SUGGESTED INPUT VOLTAGE AND POWER SUPPLY LIMITS TABLE 1. COMPONENTS PARTS LIST SUGGESTED DEVICE VALUE DESCRIPTION GAIN SUGGESTED OVERLOAD SUPPLY C1-C5 0.01F Decoupling Capacitors V LIMIT V LIMIT VOLTAGE IN IN C6 Open Optional Output Filter Capacitor 0.25 10V 12V 15V C7 Open Optional Input Filter Capacitor 10 1V 1.2V 15V 1.2pF Input Filter Capacitor (G = 0.25) 100 0.1V 0.12V 15V D1, D2 S1A Reverse Power Protection TABLE 3. ORDERING INFORMATION R1 30k Feedback Gain Resistor (G = 0.25) BOARD PART NUMBER GAIN TYPE 120k Feedback Gain Resistor (G = 10, 100) ISL28617VY25EV1Z 0.25 Eval Board R2 120k Input Gain Resistor (G = 0.25) ISL28617VY10EV1Z 10 Eval Board 12k Input Gain Resistor (G = 10) ISL28617VY100EV1Z 100 Eval Board 1.2k Input Gain Resistor (G = 100) R3, R5, R7 0 User Selectable Resistors R8, R9 0 Optional Output Filter Resistors R10, R11 0 Optional Input Filter Resistors 49.9k Input Filter Resistors (G = 0.25) R4, R6 1M Ground Input for Stability U1 ISL28617 TSSOP 24-Pin Package ISL28617VYXXEV1Z Evaluation Board Layout FIGURE 2. BOTTOM LAYER FIGURE 1. TOP LAYER AN1753.2 2 September 26, 2012