LTC1992-2CMS8 Linear Technology, LTC1992-2CMS8 Datasheet
LTC1992-2CMS8
Specifications of LTC1992-2CMS8
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LTC1992-2CMS8 Summary of contents
Page 1
... The LTC1992 is stable for all capacitive loads up to 10,000pF . The LTC1992 can be used in single supply applications with supply voltages as low as 2.7V. It can also be used with dual supplies up to ±5V. The LTC1992 is available in an 8-pin MSOP package. 10k 5V ...
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... JA orDer inForMaTion LEAD FREE FINISH TAPE AND REEL LTC1992CMS8#PBF LTC1992CMS8#TRPBF LTC1992IMS8#PBF LTC1992IMS8#TRPBF LTC1992HMS8#PBF LTC1992HMS8#TRPBF LTC1992-1CMS8#PBF LTC1992-1CMS8#TRPBF LTC1992-1IMS8#PBF LTC1992-1IMS8#TRPBF LTC1992-1HMS8#PBF LTC1992-1HMS8#TRPBF LTC1992-2CMS8#PBF LTC1992-2CMS8#TRPBF LTC1992-2IMS8#PBF LTC1992-2IMS8#TRPBF LTC1992-2HMS8#PBF LTC1992-2HMS8#TRPBF LTC1992-5CMS8#PBF LTC1992-5CMS8#TRPBF LTC1992-5IMS8#PBF LTC1992-5IMS8#TRPBF LTC1992-5HMS8#PBF LTC1992-5HMS8#TRPBF LTC1992-10CMS8#PBF LTC1992-10CMS8#TRPBF LTC1992-10IMS8#PBF LTC1992-10IMS8#TRPBF LTC1992-10HMS8#PBF LTC1992-10HMS8#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. ...
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... Output Voltage, Low (Note 2) The denotes the specifications which apply over the full operating l = 25° 5V, – defined as (+V + –V )/2. V OUTCM OUT OUT – –V ). Specifications applicable to all parts in the LTC1992 family. OUT OUT ALL C AND I GRADE CONDITIONS MIN 2 2. ± 2.7V ...
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... The denotes the specifications which apply over the full operating l = 25° 5V, – defined as (+V + –V )/2. V OUTCM OUT OUT – –V ). Specifications applicable to all parts in the LTC1992 family. OUT OUT ALL C AND I GRADE CONDITIONS MIN V = 2.7V, V =1.35V OUT 2.5V ...
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... MIN –0. –0. INCM 0 180kHz TEST = 2.5V, unless otherwise noted the voltage on the V OCM + –V )/ defined as (+ INDIFF IN LTC1992-2CMS8 LTC1992-2ISM8 CONDITIONS MIN –0. –0. INCM 0 180kHz TEST LTC1992 Family = 2.5V, unless otherwise INCM OUTCM OCM is defined as (+V + – ...
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... TEST LTC1992H/LTC1992-XH are guaranteed functional over the extended operating temperature of –40°C to 125°C. Note 6: The LTC1992C/LTC1992-XC are guaranteed to meet the specified performance limits over the 0°C to 70°C temperature range and are and –V designed, characterized and expected to meet the specified performance ...
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... G07 LTC1992 Family Applicable to all parts in the LTC1992 family. Common Mode Offset Voltage vs Temperature INCM = OCM V = ± ±1.35V S –1 –2 –3 – ...
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... TIED TOGETHER) OUTPUTS +V = 2.5V S –V = –2. OCM LTC1992-10 SHOWN FOR REFERENCE 2000 50µs/DIV = 0V OCM OUTPUTS 1992 G15 Applicable to all parts in the LTC1992 family. Differential Input Offset Voltage vs Time (Normalized 100 TEMP = 35° –20 –40 25°C –60 –80 –100 0 400 800 1200 ...
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... COMMON MODE VOLTAGE (V) Power Supply Rejection Ratio vs Frequency (Note 7) 100 90 ∆V 80 – 100 1k 10k 100k FREQUENCY (Hz) LTC1992 Family Applicable to the LTC1992 only. Differential Phase Response vs Frequency 0 = 10k FB – 10k IN FB –40 –60 – LOAD –100 10pF 50pF –120 100pF 500pF –140 1000pF –160 ...
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... LTC1992 Family Typical perForMance characTerisTics Differential Input Large-Signal Step Response 0V 2µs/DIV Single-Ended Input Large-Signal Step Response 2.5V 2µs/DIV Differential Input Small-Signal Step Response 0V 1µs/DIV 0 Applicable to the LTC1992 only. Differential Input Large-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±1.5V IN –V = 1.5V ± ...
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... P-PDIFF = 5V OUT P-PDIFF –70 –80 –90 –100 10k 50k 1992 G34 –10 –15 –20 –25 –30 –35 1000 10000 1922 G36 LTC1992 Family Applicable to the LTC1992 only. Single-Ended Input Small-Signal Step Response C = 10000pF LOAD C = 1000pF LOAD + – 2.5V OCM + 200mV IN –V ...
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... COMMON MODE VOLTAGE (V) Applicable to the LTC1992-1 only. Differential Phase Response vs Frequency 0 –20 –40 –60 – LOAD –100 10pF 50pF –120 ...
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... G49 Differential Input Small-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±50mV IN –V = 50mV ± 0pF LOAD 0V 1µs/DIV 1992 G52 Applicable to the LTC1992-1 only. Differential Input Large-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±1.5V IN –V = 1.5V ± 10000pF LOAD C = 1000pF LOAD 20µ ...
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... V = 10V OUT P-PDIFF = 5V OUT P-PDIFF –70 –80 –90 –100 10k 50k 1992 G58 Applicable to the LTC1992-1 only. Differential Noise Voltage Density vs Frequency 1000 100 10 10 100 1000 1992 G56 FREQUENCY (Hz) THD + Noise vs Amplitude 500kHz MEASUREMENT BANDWIDTH + –V = –5V ...
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... COMMON MODE VOLTAGE (V) LTC1992 Family Applicable to the LTC1992-2 only. Differential Phase Response vs Frequency 0 –20 –40 –60 – LOAD –100 10pF 50pF –120 100pF 500pF –140 1000pF – ...
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... G71 Differential Input Small-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±25mV IN –V = 25mV ± 0pF LOAD 0V 2µs/DIV 1992 G74 Applicable to the LTC1992-2 only. Differential Input Large-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±750mV IN –V = 750mV ± 10000pF LOAD C = 1000pF LOAD 20µ ...
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... –70 OUT P-PDIFF OUT P-PDIFF – OUT P-PDIFF – 10V OUT P-PDIFF –100 100 1k FREQUENCY (Hz) Applicable to the LTC1992-2 only. Single-Ended Input Small-Signal Step Response C = 10000pF LOAD C = 1000pF LOAD 2. – 2.5V OCM + 100mV IN –V = 50mV IN 20µs/DIV 1992 G78 THD + Noise vs Amplitude – ...
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... COMMON MODE VOLTAGE (V) Applicable to the LTC1992-5 only. Differential Phase Response vs Frequency 0 –20 –40 –60 – LOAD –100 10pF 50pF – ...
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... G93 Differential Input Small-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±10mV IN –V = 10mV ± 0pF LOAD 0V 5µs/DIV 1992 G96 Applicable to the LTC1992-5 only. Differential Input Large-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ± 300mV IN –V = 300mV ± 10000pF LOAD C = 1000pF LOAD 20µ ...
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... OCM – OUT P-PDIFF OUT P-PDIFF – OUT P-PDIFF – 10V OUT P-PDIFF –90 –100 100 1k FREQUENCY (Hz) 0 Applicable to the LTC1992-5 only. Single-Ended Input Small-Signal Step Response C = 10000pF LOAD C = 1000pF LOAD 2. – 2.5V OCM + 40mV IN –V = 20mV IN 50µs/DIV 1992 G100 THD + Noise vs Amplitude – ...
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... COMMON MODE VOLTAGE (V) LTC1992 Family Applicable to the LTC1992-10 only. Differential Phase Response vs Frequency 0 –20 –40 –60 – LOAD –100 10pF 50pF – ...
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... G115 Differential Input Small-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±5mV IN –V = 5mV ± 0pF LOAD 0V 10µs/DIV 1992 G118 Applicable to the LTC1992-10 only. Differential Input Large-Signal Step Response +V = 2.5V S –V = –2. OCM +V = ±150mV IN –V = 150mV ± 10000pF LOAD C = 1000pF LOAD 20µ ...
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... OCM – OUT P-PDIFF OUT P-PDIFF – OUT P-PDIFF –80 –90 –100 100 1k FREQUENCY (Hz) Applicable to the LTC1992-10 only. Single-Ended Input Small-Signal Step Response C = 10000pF LOAD C = 1000pF LOAD 2. – 2.5V OCM + 20mV IN –V = 10mV IN 100µs/DIV 1992 G122 THD + Noise vs Amplitude – ...
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... LTC1992 Family pin FuncTions –IN, +IN (Pins 1, 8): Inverting and Noninverting Inputs of the Amplifier. For the LTC1992 part, these pins are connected directly to the amplifier’s P-channel MOSFET input devices. The fixed gain LTC1992-X parts have preci- sion, on-chip gain setting resistors. The input resistors are nominally 30k for the LTC1992-1, LTC1992-2 and LTC1992-5 parts ...
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... The LTC1992 family consists of five fully differential, low power amplifiers. The LTC1992 is an unconstrained fully differential amplifier. The LTC1992-1, LTC1992-2, LTC1992- 5 and LTC1992-10 are fixed gain blocks (with gains and 10 respectively) featuring precision on-chip resistors for accurate and ultra stable gain. ...
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... V IN LTC1992 + GAIN = – Figure 1. Comparison Amp and a Fully Differential Amplifier R IN – MID V 2 OCM R IN +IN – Figure 2. LTC1992 Functional Block Diagram with External Gain Setting Resistors OUT Fully Differential Amplifier with Negative Feedback R IN – OUT LTC1992 INM ...
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... LTC1992 Family voltage. If either of these servos is taken out of /+V network is a mirror image duplicate of ...
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... Fortunately, all of basic applications circuits shown in Figure 4, as well as all of the fixed gain LTC1992-X parts, are equally suitable for both differential and single-ended input signals. For single-ended input signals, connect one of the inputs to a reference voltage (e.g., ground or mid-supply) and connect the other to the signal path. There are no tradeoffs here as the part’ ...
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... H • ( WHERE • 3-Pole Lowpass Filter – OUT ( WHERE R4C3 R2R3C1C2 R1 R1 • √R2R3 • – LTC1992 Family – +V OUT V LTC1992 OCM – –V OUT – +V OUT LTC1992 V OCM – –V OUT – +V OUT LTC1992 V OCM – –V OUT – ...
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... This small amount of positive feedback in- creases the input impedance. Driving Capacitive Loads The LTC1992 family of parts is stable for all capacitive loads least 10,000pF . While stability is guaranteed, the part’s performance is not unaffected by capacitive load- ing. Large capacitive loads increase output step response ringing and settling time, decrease the bandwidth and increase the frequency response peaking ...
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... INP and INM nodes of Figure 2. The specifications for the fixed gain LTC1992-X parts reflect a higher maximum limit as this specification is for the entire gain block and references the signal at the input resistors. Differential input signals and single-ended signals require a slightly different set of formulae ...
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... VOLTAGE AT INP AND INM NODES (V WITHIN THE SPECIFIED LIMITS. V INP V = INCM(AMP) OUTPUT SIGNAL CLIPPING LIMIT V (V INDIFF(MAX) P-PDIFF A 2AV V P-P REF –A INPUT COMMON MODE LIMITS (NOTE: FOR THE FIXED GAIN LTC1992-X PARTS INSIG(MAX INSIG(MIN (+V INSIGP-P OUTPUT SIGNAL CLIPPING LIMIT V = THE LESSER VALUE OF V ...
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... LTC1992 Family V OUTDIFF(MAX P-PDIFF 5.40 5.40 5.40 5.40 10.00 10.00 10.00 10.00 20.00 20.00 20.00 20.00 V OUTDIFF(MAX P-PDIFF 4 ...
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... LTC1992 Family applicaTions inForMaTion Table 1. Input Signal Limitations for Some Common Applications Mid-Supply Referenced Single-Ended Input Signal, V common mode limits and the output clipping) +V –V GAIN OCM (V) (V) (V/V) (V) 2 1.35 2 1.35 2 1. 2.5 5 – – – – Mid-Supply Referenced Single-Ended Input Signal, V ...
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... OSDIFF term equates to the formula in Figure 3 when β1 equals resistors in the β2. The amount of signal level shifting and the feedback CMM factor mismatch determines the second term. This term LTC1992 Family Min and Max values listed account for INSIG V V INSIGP-P(MAX) ...
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... LTC1992 Family applicaTions inForMaTion V INDIFF +V – – OUTDIFF WHERE • FOR GROUND REFERENCED, SINGLE-ENDED INPUT SIGNAL, LET +V V OUTDIFF • COMMON MODE REJECTION: SET +V CMRR = • OUTPUT DC OFFSET VOLTAGE: SET +V V OSDIFFOUT Figure 6. Basic Equations for Mismatched or Asymmetrical Feedback Applications Circuits quantifies the undesired effect of signal level shifting discussed earlier in the Signal Level Shifting section ...
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... This circuit does not have any common mode level constraints as the inverting input voltage sets the input common mode level. This circuit also delivers rail-to-rail output voltage swing without any concerns. OCM LTC1992 Family – OCM ) 1 ...
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... LTC1992 Family Typical applicaTions Interfacing a Bipolar, Ground Referenced, Single-Ended Signal to a Unipolar Single Supply, Differential Input ADC ( –2. Gives a Digital Mid-Scale Code) IN 0.1µF 40k 10k 13.3k 3 100 10k – MID 100pF LTC1992 2 V OCM 100 10k 8 + – 13.3k 10k 0.1µ ...
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... SNR =85.3dB – 333kHz THD = –72.1dB SAMPLE –20 SINAD = –72dB –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –140 FREQUENCY (kHz) 1992 TA06b LTC1992 Family 5V 10µ DGND DD SHDN CONTROL µP CONVST 31 LOGIC CONTROL AND RD 30 LINES TIMING BUSY 10µ ...
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... LTC1992 Family package DescripTion 0.889 0.127 (.035 .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN 0.42 0.038 0.65 (.0165 .0015) (.0256) TYP BSC RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. ...
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... Updated Part Markings 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC1992 Family PAGE NUMBER 2 1992fa ...
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... LTC1992 Family Typical applicaTion Balanced Frequency Converter (Suitable for Frequencies up to 50kHz) 60kHz LOW PASS FILTER 120pF 9.53k 8.87k 1 7 330pF 2 BNC BNC 9.53k 8.87k INP INP 120pF V OCM relaTeD parTs PART NUMBER DESCRIPTION LT1167 Precision Instrumentation Amplifier LT1990 High Voltage, Gain Selectable Difference Amplifier ...