Datasheet AD8337 (Analog Devices) - 9

link to page 14 link to page 14 link to page 15 link to page 15 link to page 15
Data Sheet AD8337 10 40 +85°C VS = ±5V 8 +25°C –40°C 6 35 V) 4 (m ) E G 2 30 A √Hz T V/ L 0 VO E (n –2 IS O 25 SET V N F S = ±2.5V F –4 O –6 20 +85°C
15
–8
18 0
+25°C
0 5- 5- 57
–40°C
57
–10
05
15
05
–800 –600 –400 –200 0 200 400 600 800 –800 –600 –400 –200 0 200 400 600 800 VGAIN (mV) VGAIN (mV)
Figure 15. Offset Voltage vs. VGAIN at Three Temperatures Figure 18. Output Referred Noise vs. VGAIN at Three Temperatures (See Figure 48) (See Figure 50)
80 25 500 UNITS +85°C V +25°C 70 GAIN = –0.4V –40°C VGAIN = 0V 20 60 VGAIN = +0.4V ) 50 S 15 T /√Hz V n UNI 40 F ISE ( % O 30 O 10 N 20 5 10
16 19 0 0 5- 5- 57 57
0
05
0
05
–15 –10 –5 0 5 10 15 20 25 –800 –600 –400 –200 0 200 400 600 800 OUTPUT OFFSET VOLTAGE (mV) VGAIN (mV)
Figure 16. Output Offset Voltage Histogram for Three Values of VGAIN Figure 19. Short-Circuit, Input Referred Noise at Three Temperatures (See Figure 50)
1k 7 V V S = ±2.5V GAIN = 0.7V V RFB1 = RFB2 = 100Ω S = ±5V 6 100 5 PREAMP GAIN = –1 ) ) Ω ( E /√Hz 4 V NC 10 n ( DA E E 3 P IS IM NO PREAMP GAIN = +2 2 1 1
17 20 -0 -0
0.1
5575 5575 0
0
0
1M 10M 100M 500M 100k 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 17. VGA Output Impedance vs. Frequency Figure 20. Short-Circuit, Input Referred Noise vs. Frequency at Maximum (See Figure 49) Gain—Inverting and Noninverting Preamp Gain = −1 and +2 (See Figure 50) Rev. D | Page 9 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS THEORY OF OPERATION OVERVIEW PREAMPLIFIER VGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING NOISE APPLICATIONS INFORMATION PREAMPLIFIER CONNECTIONS Noninverting Gain Configuration Inverting Gain Configuration DRIVING CAPACITIVE LOADS GAIN CONTROL CONSIDERATIONS THERMAL CONSIDERATIONS PSI (Ψ) BOARD LAYOUT EVALUATION BOARDS CIRCUIT OPTIONS OUTPUT PROTECTION MEASUREMENT SETUP BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE