DEM-OPA660-2GC EVALUATION FIXTURE ® FEATURES DESCRIPTION ● EASY AND FAST PERFORMANCE TESTING The Demo Fixture DEM-OPA660-2GC allows easy and fast performance testing of the OPA660AP in the current-feedback operational amplifier configuration. Figure 1 shows the diagram of the test fixture and Figures 2, 3 and 4 show the frequency responses measured at gains 1,2, and 10, and with different output levels from 0.2Vp-p to 5Vp-p. ● SHOWS OPTIMIZED BOARD LAYOUT ● REPLACES SELF-MADE BOARDS APPLICATIONS Figure 5 illustrates the test configuration. The silkscreen and the double-sided layout can be seen in Figure 6. ● COMPONENTS INCOME CONTROL ● PERFORMANCE CHECKS ● CIRCUIT DESIGNS ABSOLUTE MAXIMUM RATINGS Power Supply Voltage ±6V Input Voltage ±VCC, ±0.7V Operating Temperature International Airport Industrial Park • Mailing Address: PO Box 11400 Tel: (602) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • © 1991 Burr-Brown Corporation –40°C to +85°C Current Output ±15mA Quiescent Current ±26mA • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Telex: 066-6491 • FAX: (602) 889-1510 • Immediate Product Info: (800) 548-6132 LI-406 Printed in U.S.A. October, 1991 +5V C1 R2 5 1 R3 6 Out 1 8 R1 3 In –5V 470p 470p 10n 10n 2.2µ 2.2µ Rqc R4 2 R5 IN4007 7 4 FIGURE 1. Block Diagram of Test Fixture. OPA660 CURRENT-FEEDBACK OPA660 CURRENT-FEEDBACK 20 15 5Vp–p 15 5Vp–p 10 2.8Vp–p 10 2.8Vp–p 5 1.4Vp–p 5 1.4Vp–p 0 Output Voltage (Vp-p) Output Voltage (Vp-p) 20 0.6Vp–p –5 –10 0.2Vp–p –15 0 –10 0.2Vp–p –15 –20 –20 –25 –25 dB 0.6Vp–p –5 dB 1M 10M 100M 1G 1M 10M Frequency (Hz) IQ = 20mA, R1 = 150Ω, R2 = 220Ω, R4 = 300Ω, Gain = 1 FIGURE 3. Current-Feedback Amplifier Frequency Response, G = 2. ORDERING INFORMATION OPA660 CURRENT-FEEDBACK MODEL Output Voltage (Vp-p) 20 5Vp–p 10 2.8Vp–p 5 1.4Vp–p 0 1G IQ = 20mA, R1 = 150Ω, R2 = 220Ω, R4 = 270Ω, R5 = 270Ω, Gain = 2 FIGURE 2. Current-Feedback Amplifier Frequency Response, G = 1. 15 100M Frequency (Hz) DEM-OPA660-2GC DESCRIPTION TEMPERATURE RANGE Current-Feedback Operational Amplifier –25°C to +85°C 0.6Vp–p –5 50Ω –10 0.2Vp–p Network Analyzer In Out –15 50Ω –20 Generator –25 dB 1M 10M 100M 50Ω DEM-OPA660-2GC 1G Frequency (Hz) IQ = 20mA, R1 = 47Ω, R2 = 56Ω, R4 = 200Ω, R5 = 22Ω, Gain = 10 FIGURE 5. Test Circuit for DEM-OPA660-2GC. FIGURE 4. Current-Feedback Amplifier Frequency Response, G = 10. ® DEM-OPA660-2GC 2 • • • -2GC Figure 6. Silk Screen and Board Layouts. ® 3 DEM-OPA660-2GC