LinearメーカーMT 525の使用説明書/サービス説明書
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1 L T1010 1010fc Fast ± 150mA Power Buffer The LT ® 1010 is a fast, unity-gain buffer that can increase the output capability of existing IC op amps by more than an order of magnitude. This easy-to-use part makes fast amplifiers less sensitive to capacitive loading and reduces thermal feedback in precision DC amplifiers.
2 L T1010 1010fc (Note 1) Total Supply Voltage .............................................. ± 22V Continuous Output Current .............................. ± 150mA Input Current (Note 3) ....................................... ± 40mA Operating Junction Temperature Range LT1010C .
3 L T1010 1010fc SYMBOL PARAMETER CONDITIONS (Note 4) MIN TYP MAX UNITS V SOS + Positive Saturation Offset I OUT = 0 (Note 5) 1.0 V ● 1.1 V V SOS – Negative Saturation Offset I OUT = 0 (Note 5) 0.
4 L T1010 1010fc Bandwidth Phase Lag Phase Lag QUIESCENT CURRENT (mA) 0 0 FREQUENCY (MHz) 20 50 10 20 1010 G01 10 40 30 30 40 R L = 200 Ω R L = 50 Ω V IN = 100mV P-P C L 100pF A V = – 3dB T J = .
5 L T1010 1010fc TYPICAL PERFOR A CE CHAR AC TERIST ICS UW Output Offset Voltage Input Bias Current Input Bias Current TEMPERATURE ( ° C) –5 0 OFFSET VOLTAGE (mV) 100 150 150 1010 G10 50 0 0 50 100.
6 L T1010 1010fc TYPICAL PERFOR A CE CHAR AC TERIST ICS UW Bias Terminal Voltage Total Harmonic Distortion Total Harmonic Distortion TEMPERATURE ( ° C) –5 0 0.5 BIAS TERMINAL VOLTAGE (V) 0.7 1.0 0 50 1010 G19 0.6 0.9 0.8 100 150 V S = ± 20V R BIAS = 100 Ω R BIAS = 20 Ω OUTPUT VOLTAGE (V P-P ) 0.
7 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU General These notes briefly describe the LT1010 and how it is used; a detailed explanation is given elsewhere 1 . Empha- sis here will be on practical suggestions that have resulted from working extensively with the part over a wide range of conditions.
8 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU without limiting. Because of this, it is capable of power dissipation in excess of its continuous ratings.
9 L T1010 1010fc be unrealistic to use these worst-case numbers above because paralleled units are operating under identical conditions. The offset voltage specified for V S = ± 15V, V IN = 0V and T A = 25 ° C will suffice for a worst-case condition.
10 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU This is a good example of how fast op amps can be made quite easy to use by employing an output buffer.
11 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU current boost. The appearance is always worse with fast rise signal generators than in practical applications. Track and Hold The 5MHz track and hold shown here has a 400kHz power bandwidth driving ± 10V.
12 L T1010 1010fc excellent matching of the feedback resistors is required to get high output resistance. Output is bidirectional. APPLICA TIO S I FOR A TIO WU UU A2 LT1010 R3 100k 0.01% V2 R1 100k 0.01% R2 100k 0.01% R4 100k 0.01% R4 10 Ω 0.1% V1 1010 AI13 I OUT – + A1 LT1012 R2(V2 – V1) R1R4 I OUT = A2 LT1010 R1 10 Ω 0.
13 L T1010 1010fc High Current Booster The circuit below uses a discrete stage to get 3A output capacity. The configuration shown provides a clean, quick way to increase LT1010 output power. It is useful for high current loads such as linear actuator coils in disk drives.
14 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU – + A1 LT1012 A2 LT1010 Q3 2N3906 470 Ω 10pF OUTPUT 1k 50 Ω 300 Ω 2k 10k 10M INPUT 5.6k –15V (A) (B) 3k 3k 3k – 15V 15V 3 Ω 3 Ω B A 2N3904 2N3906 10M 1k 15V Q2 2N3904 Q1 2N5486 1k GAIN ADJ AB 0.
15 L T1010 1010fc APPLICA TIO S I FOR A TIO WU UU Typical thermal calculations for the miniDIP package are detailed in the following paragraphs. For 4.8mA supply current (typical at 50 ° C, 30V supply voltage—see supply current graphs) to the LT1010 at ± 15V, P D = power dissipated in the part is equal to: (30V)(0.
16 L T1010 1010fc DEFI ITIO OF TER S U W U Output Offset Voltage: The output voltage measured with the input grounded (split supply operation). Input Bias Current: The current out of the input terminal. Large-Signal Voltage Gain: The ratio of the output volt- age change to the input voltage change over the specified input voltage range.
17 L T1010 1010fc U PACKAGE DESCRIPTIO DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 3.00 ± 0.10 (4 SIDES) NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4.
18 L T1010 1010fc N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) U PACKAGE DESCRIPTIO N8 1002 .065 (1.651) TYP .045 – .065 (1.143 – 1.651) .130 ± .005 (3.302 ± 0.127) .020 (0.508) MIN .018 ± .003 (0.457 ± 0.076) .120 (3.
19 L T1010 1010fc Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
20 L T1010 1010fc PART NUMBER DESCRIPTION COMMENTS LT1206 250mA, 60MHz Current Feedback Amplifier 900V/ µ s, Excellent Video Characteristics LT1210 1.
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