LTC6910-2ITS8 Linear Technology Corporation, LTC6910-2ITS8 Datasheet
LTC6910-2ITS8
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LTC6910-2ITS8 Summary of contents
Page 1
... PC board space. The inverting gain is adjustable using a 3-bit digital input to select gains 10, 20, 50 and 100V/V in the LTC6910- 16, 32 and 64V/V in the LTC6910-2; and 5,6 and 7V/V in the LTC6910-3. The LTC6910-Xs are inverting amplifiers with rail-to-rail output ...
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... U W ORDER PART NUMBER LTC6910-1CTS8 LTC6910-1ITS8 LTC6910-1HTS8 LTC6910-2CTS8 TOP VIEW + LTC6910-2ITS8 LTC6910-2HTS8 6 G1 LTC6910-3CTS8 5 G0 LTC6910-3ITS8 LTC6910-3HTS8 = 230 C/W JA TS8 PART MARKING* LTB5 (6910-1) LTACQ (6910-2) LTACS (6910-3) NOMINAL ) INPUT P-P Single 5V Single 3V IMPEDANCE Supply Supply ...
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... GAI SETTI PROPERTIES Table 2. LTC6910 Volts/Volt – – – – – – –64 Table 3. LTC6910 Volts/Volt – – – – –5 ...
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... LTC6910-2/LTC6910-3 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for the LTC6910-1, LTC6910-2 and LTC6910-3 Total Supply Voltage Supply Current Output Voltage Swing LOW (Note 5) Output Voltage Swing HIGH (Note 5) Output Short-Circuit Current (Note 6) AGND Open-Circuit Voltage AGND Rejection (i ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for LTC6910-1 Only Voltage Gain (Note 7) Offset Voltage Magnitude (Internal Op Amp (Note 8) OS(OA) Offset Voltage Drift (Internal Op Amp) (Note 8) Offset Voltage Magnitude (Referred to “IN” Pin OS(IN) ...
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... LTC6910-1 LTC6910-2/LTC6910-3 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for LTC6910-1 Only DC Small-Signal Output Resistance Gain-Bandwidth Product Wideband Noise (Referred to Input) Voltage Noise Density (Referred to Input) Total Harmonic Distortion AGND (Common Mode) Input Voltage Range ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for LTC6910-2 Only Voltage Gain (Note 7) Offset Voltage Magnitude (Internal Op Amp (Note 8) OS(OA) Offset Voltage Drift (Internal Op Amp) (Note 8) Offset Voltage Magnitude (Referred to “IN” Pin OS(IN) ...
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... LTC6910-1 LTC6910-2/LTC6910-3 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for LTC6910-2 Only DC Small-Signal Output Resistance Gain-Bandwidth Product Wideband Noise (Referred to Input) Voltage Noise Density (Referred to Input) Total Harmonic Distortion AGND (Common Mode) Input Voltage Range ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are midsupply point, unless otherwise noted. PARAMETER Specifications for LTC6910-3 Only Voltage Gain (Note 7) Offset Voltage Magnitude (Internal Op Amp (Note 8) OS(OA) Offset Voltage Drift (Internal Op Amp) (Note 8) Offset Voltage Magnitude (Referred to “IN” Pin OS(IN) ...
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... Note 1: Absolute Maximum Ratings are those values beyond which the life of the device may be impaired. Note 2: The LTC6910-XC and LTC6910-XI are guaranteed functional over the operating temperature range of – The LTC6910-XH are guaranteed functional over the operating temperature range of – 125 C. ...
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... G02 LTC6910-1 Noise Density vs Frequency 100 V = 2.5V INPUT-REFERRED S GAIN = 2. 1000 1 10 FREQUENCY (kHz) 6910 G05 LTC6910-1 THD + Noise vs Input Voltage 3 – –30 1 NOISE BW = 22kHz –40 0.3 GAIN SETTING = 100 –50 0.1 GAIN SETTING = 10 –60 –70 0.03 –80 0.01 –90 0.003 – ...
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... C +V – 1 – 2.0 S –V + 2.0 S –V + 1.5 S –V + 1.0 S SINK –V + 0.5 S –V S 0.01 0 OUTPUT CURRENT (mA) LTC6910-2 Distortion with Light Loading (R = 10k) L – 2. (2.83V ) OUT RMS P-P –40 THD MEASURES HD2 AND HD3 –50 –60 GAIN = 64 –70 GAIN = 8 –80 GAIN = 1 –90 –100 50 ...
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... G20 LTC6910-3 Noise Density vs Frequency 100 V = 2.5V S INPUT-REFERRED GAIN = 2. 1000 1 10 FREQUENCY (kHz) 6910 G23 LTC6910-3 THD + Noise vs Input Voltage 3 – 1kHz – NOISE BW = 22kHz –40 0.3 GAIN SETTING = 7 –50 GAIN SETTING = 4 0.1 –60 –70 0.03 –80 0.01 – ...
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... Figure 1. Single Supply Ground Plane Connection 14 Recommended analog ground plane connection depends on how power is applied to the LTC6910-X (Figures 1, 2, and 3). Single power supply applications typically use V for the system signal ground. The analog ground plane in single-supply applications should therefore tie to V the AGND pin should be bypassed to this ground plane by a high quality capacitor of at least 1 F (Figure 1) ...
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... Do not connect the AGND pin to the V IN (Pin 3): Analog Input. The input signal to the amplifier in the LTC6910-X is the voltage difference between the IN and AGND pins. The IN pin connects internally to a digitally controlled resistance whose other end is a current sum- ming point at the same potential as the AGND pin (Fig- ure 4) ...
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... Electrically clean supplies and a low impedance ground are important for the high dynamic range available from the LTC6910-X (see further details under AGND). Low noise linear power supplies are recommended. Switching power supplies require special care to prevent switching noise coupling into the signal path, reducing dynamic range ...
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... Offset Voltage vs Gain Setting The electrical tables list DC offset (error) voltage at the inputs of the internal op-amp in Figure the source of DC offsets in the LTC6910-X. The tables also show the resulting, gain dependent offset voltage referred to the IN pin, V related through the feedback/input resistor ratio, which ...
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... Figure 5c. A low value for + and R1 overrides the internal resistors at pin 2 and applies the system DC bias to the LTC6910. Actual values for the adjustment components depend on the magnitude of the DC bias voltage. Offset adjustment component values shown are an example with a single ...
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... SNR above unity V/V or 0dB 10V total power supply the LTC6910-1 (gains 0V to 100V/V) is typically 120dB (the ratio of a nominal 9.9V the 3 for the LTC6910-2 (gains 0V to 64V) is also 120dB; for LTC6910-1 LTC6910-2/LTC6910-3 .) This DR has a physical interpretation as the , or 3.5V ...
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... LTC6910-1 LTC6910-2/LTC6910-3 U TYPICAL APPLICATIO S the LTC6910-3 (gains 0V to 7V/ 117dB. The SNR from an amplifier is the ratio of input level to input- referred noise, and can be 110dB with the LTC6910 family at unity gain. Construction and Instrumentation Cautions Electrically clean construction is important in applications seeking the full dynamic range of the LTC6910-X ampli- fier ...
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... Figure 7 shows a block diagram and Figure 8 the practical circuit for a low noise amplifier with gain and bandwidth independently programmable over 100:1 ranges. One LTC6910-X controls the gain and another controls the bandwidth. An LT1884 dual op amp forms an integrating lowpass loop with capacitor C2 to set the programmable upper corner frequency ...
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... LTC6910-1 LTC6910-2/LTC6910-3 U TYPICAL APPLICATIO S Measured frequency responses in Figure 8 with LTC6910-1 PGAs demonstrate bandwidth settings of 10Hz, 100Hz and 1kHz, with digital codes at the BW inputs of respectively 001, 100 and 111, and unity gain in each case. By scaling C2, this circuit can serve other bandwidths, + – ...
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... MIN (NOTE 4) 0.65 BSC 0.80 – 0.90 0.09 – 0.20 (NOTE 3) 1.00 MAX 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 LTC6910-1 LTC6910-2/LTC6910-3 2.90 BSC (NOTE 4) PIN ONE ID 0.22 – 0.36 8 PLCS (NOTE 3) 0.01 – 0.10 1.95 BSC TS8 TSOT-23 0802 6910123fa 23 ...
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... Frequency Response, LTC6910-2 40 G2, G1 111 G2, G1 110 30 G2, G1 101 G2, G1 100 20 G2, G1 011 10 G2, G1 010 G2, G1 001 10V 5mV S ...