LT1797 Linear Technology, LT1797 Datasheet
LT1797
Available stocks
Related parts for LT1797
LT1797 Summary of contents
Page 1
... Protective resistors are in- cluded in the input leads so that current does not become excessive when the inputs are forced above or below the supplies. The output of the LT1797 can swing to within 50mV of V – and 8mV of V without drawing excess current in either condition ...
Page 2
... 3V 0.5V to 2.5V 10k 5V 0.5V to 4.5V 10k ORDER PART NUMBER TOP VIEW + LT1797CS5 5 V LT1797IS5 4 –IN S5 PART MARKING S5 PACKAGE LTLM = 250 LTTL = MIN TYP MAX 1 1.5 2.5 3 –300 –150 50 100 0 1 ...
Page 3
... – – 0.1Hz to 10Hz f = 10kHz f = 10kHz f = 10kHz 4.7V CM Differential Common Mode – 3.8V CM LT1797 = MIN TYP MAX UNITS 2.5 2 160 mV 150 250 mV V – 0.14 V – 0. – 0.30 V – ...
Page 4
... Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. Note 3: The LT1797C is guaranteed to meet specifications and is designed, characterized and expected to meet the extended temperature limits, but is not tested at –40 C and 85 C. The LT1797I is guaranteed to meet specified performance from – CONDITIONS V = – ...
Page 5
... SINKING LOAD CURRENT (A) 1797 G05 0.1Hz to 10Hz Noise Voltage TIME (SEC) 1797 G08 LT1797 Input Bias Current vs Common Mode Voltage 100 – 125 C A –50 –100 – ...
Page 6
... LT1797 W U TYPICAL PERFOR A CE CHARACTERISTICS Input Noise Current Density vs Frequency 1 2.5V S 1.0 0.8 0.6 0.4 0 100 1k 10k 100k FREQUENCY (Hz) 1797 G10 Slew Rate vs Temperature 3 2.5V S 3.0 RISING 2.5 FALLING 2.0 1.5 1.0 –50 – 100 125 TEMPERATURE ( C) 1797 G13 PSRR vs Frequency 2. NEGATIVE SUPPLY ...
Page 7
... 1.8V OUT P 0 – 0.001 0.0001 1M 10 100 1k 10k FREQUENCY (Hz) Large-Signal Response LT1797 Capacitive Load Handling Overshoot vs Capacitive Load 2. 100 1000 2.8 3 ...
Page 8
... If the output is forced beyond either supply, unlimited current will flow through these diodes. The LT1797 can drive capacitive loads up to 200pF on a single 5V supply in a unity gain configuration. When there is a need to drive larger capacitive loads, a resistor of a couple hundred ohms should be connected between the output and the capacitive load ...
Page 9
... very good, typically 95dB. When the LT1797 switches between input stages there is significant nonlinearity in the CMRR. Lower load resistance increases the output cross- over distortion, but has no effect on the input stage transition distortion. For lowest distortion the LT1797 ...
Page 10
... R4, C2 SET LOWER 1.6kHz LIMIT ON GAIN OF 101 100k 1k C2 0.1 F 1797 TA02 LT1797 OUT R5 4.99k – 1k – 2200pF 10k R3 4.99k = 10M . Z . RMS AND LT1797 GBW SET UPPER LIMIT ON BANDWIDTH. P TOTAL INPUT VOLTAGE NOISE 0.94nV/ Hz (INCLUDING 10 RESISTOR) BANDWIDTH 40kHz A = 500 V 1797 TA03 ...
Page 11
... REF (0.102 – 0.118) 1.50 – 1.75 0.00 – 0.15 (0.059 – 0.069) (0.00 – 0.006) 0.35 – 0.50 0.09 – 0.20 (0.014 – 0.020) (0.004 – 0.008) FIVE PLACES (NOTE 2) (NOTE 2) LT1797 0.95 (0.037) REF 0.90 – 1.45 (0.035 – 0.057) 0.90 – 1.30 (0.035 – 0.051) S5 SOT-23 0599 11 ...
Page 12
... LT1797 U TYPICAL APPLICATIO 1MHz Photodiode Transimpedance Amplifier 3pF 100k + V – PHOTODIODE SFH213FA LT1797 SIEMENS/INFINEON + – V RELATED PARTS PART NUMBER DESCRIPTION LT1630/LT1631 Dual/Quad 30MHz, 10V/ s Rail-to-Rail Input and Output Op Amps LT1638/LT1639 Dual/Ouad 1.2MHz, 0.4V/ s, Over-The-Top Rail-to-Rail Input and Output Op Amps LT1783 ...