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1、LT6604IUFF-10#PBF,LT6604CUFF-10#PBF,LT6604CUFF-10#TRPBF,LT6604IUFF-10#TRPBF, 规格书,Datasheet 资料1660410fb T YPICAL APPLICATIOND ESCRIPTION Differential Ampli? er and10MHz Lowpass FilterThe L T ?6604-10 consists of two matched, fully differential ampli? ers, each with a 4th order , 10MHz lowpass ? lter
2、. The ? xed frequency lowpass ? lter approximates a Chebyshev response. By integrating a ? lter and a differential ampli-? er , distortion and noise are made exceptionally low. At unity gain, the measured in band signal-to-noise ratio is an impressive 82dB. At higher gains, the input referred noise
3、decreases, allowing the part to process smaller input differential signals without signi? cantly degrading the signal-to-noise ratio.Gain and phase are highly matched between the two chan-nels. Gain for each channel is independently programmed using two external resistors. The L T6604-10 enables lev
4、el shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs.The L T6604-10 is fully speci? ed for 3V operation. The differential design enables outstanding performance at a 2V P-P signal level for a single 3V supply. See the back page of this d
5、ata sheet for a complete list of related single and dual differential ampli? ers with integrated 2.5MHz to 20MHz lowpass ? lters.Channel to Channel Gain Matching, V S = 5V F EATURESA PPLICATIONS nDual Differential Ampli? er with 10MHz Lowpass Filters 4th Order FiltersApproximates Chebyshev Response
6、Guaranteed Phase and Gain Matching Resistor-Programmable Differential Gain n 82dB Signal-to-Noise (3V Supply, 2V P-P Output)n Low Distortion, 2V P-P , 800 Load 1MHz: 88dBc 2nd, 97dBc 3rd 5MHz: 74dBc 2nd, 77dBc 3rd n Speci? ed for Operation with 3V , 5V and 5V Supplies n Fully Differential Inputs and
7、 Outputsn Adjustable Output Common Mode Voltage n Small 4mm 7mm 0.75mm QFN PackagenDual Differential ADC Driver Plus Filter n Single-Ended to Differential Converter n Matched, Dual, Differential Filter Stagen Common Mode T ranslation of Differential Signals nHigh Speed ADC Antialiasing and DAC Smoot
8、hing in Wireless Infrastructure or Networking Applications n High Speed Test and Measurement Equipment n Medical ImagingL , L T , L TC and L TM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.+1216200.15660410 TA01b84101418
9、6200.10.150.050.050.10.200.25GAIN MATCH (dB)芯世界-http:/ P IN CONFIGURATIONA BSOLUTE MAXIMUM RATINGS Total Supply Voltage .11V Operating Temperature Range (Note 6).40C to 85C Speci? ed Temperature Range (Note 7) .40C to 85C Junction Temperature .150C Storage Temperature Range .65C to 150C Input Curren
10、t+IN, IN, V OCM , V MID (Note 8) .10mA Lead Temperature (Soldering, 10 sec) .300CORDER INFORMATIONLEAD FREE FINISH TAPE AND REEL PART MARKING*PACKAGE DESCRIPTIONSPECIFIED TEMPERATURE RANGE L T6604CUFF-10#PBF L T6604CUFF-10#TRPBF 6041034-Lead (4mm 7mm) Plastic QFN 0C to 70C L T6604IUFF-10#PBFL T6604I
11、UFF-10#TRPBF6041034-Lead (4mm 7mm) Plastic QFN40C to 85CConsult L TC Marketing for parts speci? ed with wider operating temperature ranges. *The temperature grade is identi? ed by a label on the shipping container.Consult L TC Marketing for information on non-standard lead based ? nish parts.For mor
12、e information on lead free part marking, go to: http:/www.linear .com/leadfree/ For more information on tape and reel speci? cations, go to: http:/www.linear .com/tapeandreel/31 V 32 V 33 N C34 V M I D AV +B 17N C 16N C 15V O C M B 1430 NC 29 OUTA 28 NC 27 +OUTA 26 NC 25 V +A 24 V 23 NC 22 NC 21 OUT
13、B 20 NC 19 +OUTB 18 NCNC 1+INA 2NC 3INA 4NC 5V OCMA 6V 7V MIDB 8NC 9+INB 10NC 11INB 12NC 13TOP VIEW UFF PACKAGE34-LEAD (4mm 7mm) PLASTIC QFN35T JMAX = 150C, JA = 34C/W , JC = 2.7C/WEXPOSED PAD (PIN 35) IS V , MUST BE SOLDERED TO PCB(Note 1)芯世界-http:/ LECTRICAL CHARACTERISTICS Thel denotes speci? cat
14、ions that apply over the full operating temperature range, otherwise speci? cations are at T A = 25C. Unless otherwise speci?ed V S = 5V (V + = 5V, V = 0V), R IN = 402, and R LOAD = 1k.PARAMETERCONDITIONSMIN TYP MAX UNITS Filter Gain Either Channel, V S = 3VV IN = 2V P-P , f IN = DC to 260kHzV IN =
15、2V P-P , f IN =1MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 5MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 8MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 10MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 30MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 50MHz (Gain Relati
16、ve to 260kHz)l l l l l l 0.40.10.40.30.2000.10.10.328440.50.10.311.725dB dB dB dB dB dB dB Matching of Filter Gain, V S = 3VV IN = 2V P-P , f IN = DC to 260kHzV IN = 2V P-P , f IN =1MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 5MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 8MHz (Gain Re
17、lative to 260kHz)V IN = 2V P-P , f IN = 10MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 30MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 50MHz (Gain Relative to 260kHz)l l l l l l 0.10.010.030.080.150.30.40.60.10.30.40.71.82.8dB dB dB dB dB dB dB Matching of Filter Phase, V S = 3VV IN = 2
18、V P-P , f IN =1MHz V IN = 2V P-P , f IN = 5MHz V IN = 2V P-P , f IN = 8MHzl l l 0.20.51134deg deg deg Filter Gain Either Channel, V S = 5VV IN = 2V P-P , f IN = DC to 260kHzV IN = 2V P-P , f IN =1MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 5MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN =
19、 8MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 10MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 30MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 50MHz (Gain Relative to 260kHz)l l l l l l 0.50.10.40.40.3000.10.10.228440.50.10.30.91.425dB dB dB dB dB dB dB Matching of Filter Gain, V
20、S = 5VV IN = 2V P-P , f IN = DC to 260kHzV IN = 2V P-P , f IN =1MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 5MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 8MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 10MHz (Gain Relative to 260kHz)V IN = 2V P-P , f IN = 30MHz (Gain Relative to
21、260kHz)V IN = 2V P-P , f IN = 50MHz (Gain Relative to 260kHz)l l l l l l 0.10.010.030.080.150.30.40.60.10.30.40.71.82.8dB dB dB dB dB dB dB Matching of Filter Phase, V S = 5VV IN = 2V P-P , f IN =1MHz V IN = 2V P-P , f IN = 5MHz V IN = 2V P-P , f IN = 8MHz l l l0.20.51134deg deg deg Filter Gain Eith
22、er Channel, V S = 5V V IN = 2V P-P , f IN = DC to 260kHz 0.60.10.4dB Filter Gain, R IN = 100V IN = 0.5V P-P , f IN = DC to 260kHz V S = 3V V S = 5VV S = 5V11.411.411.412121212.612.612.6dB dB dB Filter Gain Temperature Coef? cient (Note 2)f IN = 260kHz, V IN = 2V P-P780ppm/C NoiseNoise BW = 10kHz to
23、10MHz, R IN = 40256V RMS Distortion (Note 4)1MHz, 2V P-P , R L = 800 2nd Harmonic 3rd Harmonic 8897dBc dBc 5MHz, 2V P-P , R L = 800 2nd Harmonic 3rd Harmonic 7477dBc dBc Channel Separation (Note 9)1MHz, 2V P-P , R L = 800119dB 5MHz, 2V P-P , R L = 800111dB Differential Output SwingMeasured Between +
24、OUT and OUT , V OCM Shorted to V MID V S = 5V V S = 3Vl l3.853.855.04.9V P-P_DIFF V P-P_DIFF芯世界-http:/ CONDITIONS MIN TYP MAX UNITS Input Bias CurrentAverage of +IN and IN l8540A Input Referred Differential OffsetR IN = 402V S = 3V V S = 5VV S = 5V l l l 5108203035mV mV mV R IN = 100 V S = 3V V S =
25、5VV S = 5Vl l l555132230mV mV mV Differential Offset Drift10V/CInput Common Mode Voltage (Note 3)Differential Input = 500mV P-P, R IN = 100 V S = 3V V S = 5VV S = 5V l l l 002.5 1.531V V V Output Common Mode Voltage (Note 5)Differential Output = 2V P-P, V MID = OPEN V S = 3V V S = 5V V S = 5Vl l l 1
26、1.51 1.532V V V Output Common Mode Offset (with Respect to V OCM )V S = 3V V S = 5V V S = 5V l l l 354055555404035mV mV mV Common Mode Rejection Ratio 61dB Voltage at V MID V S = 5V V S = 3Vl 2.45 2.511.5 2.56V V V MID Input Resistance l 4.3 5.57.7kV OCM Bias CurrentV OCM = V MID = V S /2 V S = 5V V
27、 S = 3V l l 151033A APower Supply Current (per Channel)V S = 3V , V S = 5V V S = 3V , V S = 5V V S = 5Vl l 3536394346mA mA mAE LECTRICAL CHARACTERISTICS The l denotes speci? cations that apply over the full operating temperaturerange, otherwise speci? cations are at T A = 25C. Unless otherwise speci
28、?ed V S = 5V (V + = 5V , V = 0V), R IN = 402, and R LOAD = 1k.Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.Note 2: This i
29、s the temperature coef? cient of the internal feedback resistors assuming a temperature independent external resistor (R IN ).Note 3: The input common mode voltage is the average of the voltages applied to the external resistors (R IN ). Speci? cation guaranteed for R IN 100.Note 4: Distortion is me
30、asured differentially using a differential stimulus. The input common mode voltage, the voltage at V OCM , and the voltage at V MID are equal to one half of the total power supply voltage.Note 5: Output common mode voltage is the average of the +OUT and OUT voltages. The output common mode voltage i
31、s equal to V OCM .Note 6: The L T6604C-10 is guaranteed functional over the operating temperature range 40C to 85C.Note 7: The L T6604C-10 is guaranteed to meet 0C to 70C speci? cations and is designed, characterized and expected to meet the extendedtemperature limits, but is not tested at 40C and 8
32、5C. The L T6604I-10 is guaranteed to meet speci? ed performance from 40C to 85C.Note 8: Input pins (+IN, IN, V OCM and V MID ) are protected by steering diodes to either supply. If the inputs should exceed either supply voltage, the input current should be limited to less than 10mA. In addition, the
33、 inputs +IN, IN are protected by a pair of back-to-back diodes. If the differential input voltage exceeds 1.4V , the input current should be limited to less than 10mA.Note 9: Channel separation (the inverse of crosstalk) is measured by driving a signal into one input, while terminating the other inp
34、ut. Channel separation is the ratio of the resulting output signal at the driven channel to the output at the channel that is not driven.芯世界-http:/ T YPICAL PERFORMANCE CHARACTERISTICS Output Impedancevs Frequency (OUT + or OUT )Common Mode Rejection RatioPower Supply Rejection RatioDistortion vs Fr
35、equencyV IN = 2V P-P , V S = 3V , R L = 800 at Each Output, T A = 25C, Gain = 1Distortion vs FrequencyV IN = 2V P-P , V S = 5V , R L = 800 at Each Output, T A = 25C, Gain = 1Amplitude ResponsePassband Gain and Group DelayPassband Gain and Group DelayFREQUENCY (Hz)100k3020100101M 10M 100M660410 G0140
36、50708060G A I N 20L O GD I F F O U T D I F F I N()FREQUENCY (MHz)0.59G A I N (d B )GROUP DELAY (ns)86541214.9660410 G02710310152530354520505560405.310.1FREQUENCY (MHz)0.52G A I N (d B )GROUP DELAY (ns)356712914.9660410 G0341011810152530354520505560405.310.1FREQUENCY (Hz)100k0.1O U T P U T I M P E D
37、A N C E ()1101001M 10M 100M660410 G04FREQUENCY (Hz)100k60C M R R (d B )657075801M 10M 100M660410 G055550403545FREQUENCY (Hz)20P S R R (d B )30506080901k100k 1M 100M660410 G061010k10M70400FREQUENCY (MHz)0.1100D I S T O R T I O N (d B c )9080706040110660410 G0750FREQUENCY (MHz)0.1100D I S T O R T I O
38、N (d B c )9080706040110660410 G0850芯世界-http:/ PERFORMANCE CHARACTERISTICSDistortion vs Input Common ModeLevel, 0.5V P-P , 1MHz Input, 4x Gain, R L = 800 at Each Output, T A = 25CSingle Channel Supply Currentvs Total Supply VoltageT ransient Response, Differential Gain = 1Channel Separation vs Freque
39、ncy (Note 9)Distortion vs Output Common Mode Level, 2V P-P 1MHz Input, 1x Gain, T A = 25CDistortion vs Signal LevelV S = 3V , R L = 800 at Each Output, T A = 25C, Gain = 1Distortion vs Signal LevelV S = 5V , R L = 800 at Each Output,T A = 25C, Gain = 1Distortion vs Input Common Mode Level, 2V P-P ,
40、1MHz Input, 1x Gain, R L = 800 at Each Output, T A = 25CINPUT LEVEL (V P-P )0100D I S T O R T I O N (d B c )9080706050401234660410 G095INPUT LEVEL (V P-P )06050404660410 G107080123590100110D I S T O R T I O N (d B c )INPUT COMMON MODE VOLTAGERELATIVE TO V MID (V)3100D I S T O R T I O N C O M P O NE
41、N T (d B c )90807060402101660410 G112350INPUT COMMON MODE VOLTAGERELATIVE TO V MID (V)3100D I S T O R T I O N C O M P O NE N T (d B c )90807060402101660410 G122350TOTAL SUPPLY VOLTAGE (V)2S U P P L Y C U R R E N T (m A )323610660410 G13282446835794030342638(V OCM V MID ) VOLTAGE (V)1100D I S T O R T
42、 I O N C O M P O NE N T (d B c )90807060400.5 0.51660410 G161.52502ND HARMONIC, V S = 3V 3RD HARMONIC, V S = 3V 2ND HARMONIC, V S = 5V 3RD HARMONIC, VS = 5V 2ND HARMONIC, V S = 5V 3RD HARMONIC, V S = 5V100ns/DIVV OUT +50mV/DIV660410 G14INPUT 200mV/DIVFREQUENCY (MHz)0.140C H A N N E L S E P A R A T I
43、 O N (d B )20110100660410 G156080120140100芯世界-http:/ P IN FUNCTIONS +INA and INA (Pins 2, 4): Channel A Input Pins. Signals can be applied to either or both input pins through identi-cal external resistors, R IN . The DC gain from differential inputs to the differential outputs is 402/R IN .V OCMA (
44、Pin 6): DC Common Mode Reference Voltage for the 2nd Filter Stage in Channel A. Its value programs the common mode voltage of the differential output of the ? lter . Pin 6 is a high impedance input, which can be driven from an external voltage reference, or Pin 6 can be tied to Pin 34 on the PC boar
45、d. Pin 6 should be bypassed with a 0.01F ceramic capacitor unless it is connected to a ground plane.V (Pins 7, 24, 31, 32, 35): Negative Power Supply Pin (can be ground).V MIDB (Pin 8): The V MIDB pin is internally biased at midsup-ply, see the Block Diagram. For single supply operation the V MIDB pin should be bypassed with a quality 0.