LT6604-10 Linear Technology Corporation, LT6604-10 Datasheet
LT6604-10
Related parts for LT6604-10
LT6604-10 Summary of contents
Page 1
... The LT6604-10 enables level shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs. The LT6604-10 is fully specifi ed for 3V operation. The differential design enables outstanding performance signal level for a single 3V supply. See the back ...
Page 2
... LT6604-10 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage .................................................11V Operating Temperature Range (Note 6).... –40°C to 85°C Specifi ed Temperature Range (Note 7) .... –40°C to 85°C Junction Temperature ........................................... 150°C Storage Temperature Range ................... –65°C to 150°C Input Current +IN, –IN (Note 8) .........................±10mA ...
Page 3
... R = 800Ω P-P L 1MHz 800Ω P-P L 5MHz 800Ω P-P L Measured Between +OUT and –OUT, V Shorted to V OCM LT6604-10 + – 5V 0V 402Ω, and R IN MIN TYP MAX –0 –0 –0.4 –0.1 l –0.3 0.1 l – ...
Page 4
... LT6604-10 ELECTRICAL CHARACTERISTICS range, otherwise specifi cations are PARAMETER Input Bias Current Input Referred Differential Offset Differential Offset Drift Input Common Mode Voltage (Note 3) Output Common Mode Voltage (Note 5) Output Common Mode Offset (with Respect OCM Common Mode Rejection Ratio ...
Page 5
... Gain = 1 A –40 DIFFERENTIAL INPUT, 2ND HARMONIC DIFFERENTIAL INPUT, –50 3RD HARMONIC SINGLE-ENDED INPUT, –60 2ND HARMONIC SINGLE-ENDED INPUT, 3RD HARMONIC –70 –80 –90 –100 0.1 1 FREQUENCY (MHz) LT6604- GAIN GROUP DELAY 5.3 10.1 14.9 FREQUENCY (MHz) 660410 G02 ) ...
Page 6
... LT6604-10 TYPICAL PERFORMANCE CHARACTERISTICS Distortion vs Signal Level 800Ω at Each Output 25°C, Gain = 1 A –40 2ND HARMONIC, 5MHz INPUT 3RD HARMONIC, –50 5MHz INPUT 2ND HARMONIC, –60 1MHz INPUT 3RD HARMONIC, 1MHZ INPUT –70 –80 –90 –100 ...
Page 7
... A. It has a 5.5kΩ impedance, and it can be overridden with an external low impedance voltage source. . Exposed Pad (Pin 35 soldered to the PCB. LT6604-10 pin is internally biased at mid- MIDA – . The exposed pad must be 660410fb 7 ...
Page 8
... LT6604-10 BLOCK DIAGRAM +INA + –INA – OCMA 6 – MIDB +INB –INB – – – MIDA 11k PROPRIETARY LOWPASS 402Ω ...
Page 9
... V is the common mode input voltage. Simi – larly, the voltages V and V OUT OUT and 29 of the LT6604-10 are the fi lter outputs. The differ- + – ence between V and V is the differential output OUT OUT + voltage. The average of V and V OUT mode output voltage ...
Page 10
... LT6604-10 APPLICATIONS INFORMATION In Figure 3 the LT6604-10 is providing 12dB of gain. The gain resistor has an optional 62pF in parallel to improve the passband fl atness near 10MHz. The common mode output voltage is set to 2V. Use Figure 4 to determine the interface between the LT6604-10 and a current output DAC. The gain, or “tran- simpedance,” ...
Page 11
... P-P This is illustrated in Figure 6; the LT6604-10 channel was confi gured with unity passband gain and the input of the fi lter was driven with a 1MHz signal. Because this voltage limiting takes place well before the output stage of the fi ...
Page 12
... Electrical Characteristics section). Common Mode DC Currents In applications like Figures 1 and 3 where the LT6604-10 not only provides lowpass fi ltering but also level shifts the common mode voltage of the input signal, DC currents will be generated through the DC path between input and output terminals ...
Page 13
... The LT6604-10 amplifi ers combine high speed with large signal currents in a small package. There is a need to en- sure that the die’s junction temperature does not exceed 150°C. The LT6604-10 has an exposed pad (pin 35) which – is connected to the lower supply ( ground plane helps to dissipate the heat generated by the chip ...
Page 14
... R • 10MHz 402Ω – GAIN = , MAXIMUM GAIN = 0.1μ – – INB + 1 LT6604- – INB 0.1μ 2π • R • 10MHz 660410 TA02a 402Ω – GAIN = , MAXIMUM GAIN = 4 ...
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... BSC 6.00 REF 6.10 ± 0.05 7.50 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED R = 0.10 0.75 ± 0.05 TYP 6.00 REF R = 0.125 0.200 REF TYP 0.00 – 0.05 LT6604-10 0.70 ± 0.05 PACKAGE OUTLINE 1.29 ± 0.05 PIN 1 NOTCH R = 0.30 OR 0.25 × 45° CHAMFER 1.50 REF 33 34 0.40 ± 0. 1.90 ± 0.10 1.47 ± ...
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... LT6604-10 RELATED PARTS PART NUMBER DESCRIPTION Integrated Filters th LTC1562-2 Very Low Noise, 8 Order Filter Building Block LTC1565-31 650kHz Linear Phase Lowpass Filter LTC1566-1 Low Noise, 2.3MHz Lowpass Filter th LT1568 Very Low Noise, 4 Order Filter Building Block LTC1569-7 Linear Phase, Tunable 10 LT6600-2.5 Very Low Noise Differential 2 ...