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參數(shù)資料
| 型號： | LTC6601CUF-2#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 8/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER/ADC DVR LP LD 20-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 頻率 - 截止或中心： | 27MHz |
| 濾波器數(shù)： | 3 |
| 濾波器階數(shù)： | 2nd |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-QFN 裸露焊盤（4x4） |
| 包裝： | 帶卷 (TR) |
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LTC6601-2
16
66012f
APPLICATIONS INFORMATION
FUNCTIONAL DESCRIPTION
The LTC6601 is designed to make the implementation of
high frequency fully-differential ltering functions very
easy. A very low noise amplier is surrounded by 8 precision
matched resistors and 12 precision matched capacitors
so that a myriad of lter transfer functions limited only by
possible combinations and imagination can be congured
by hard wiring pins. The amplier itself is a wide band, low
noise and low distortion fully-differential amplier with ac-
curate output phase balancing. It is optimized for driving low
voltage, single-supply, differential input, analog-to-digital
converters (ADCs). The LTC6601’s outputs are capable
of swinging rail-to-rail on supplies as low as 2.7V, which
makes the amplier ideal for converting ground referenced,
single-ended signals into VOCM referenced differential
signals. Unlike traditional op amps which have a single
output, the LTC6601 has two outputs to process signals
differentially. This allows for two times the signal swing
in low voltage systems when compared to single-ended
output ampliers. The balanced differential nature of the
amplier and matched surrounding components provide
even-order harmonic distortion cancellation, and less
susceptibility to common mode noise (like power supply
noise). The LTC6601 can be used as a single-ended input
to differential output amplier, or as a differential input to
differential output amplier.
Figure 3 shows the basic lter architecture. The Laplace
transfer function from VINDIFF to VOUTDIFF is given by the
following generalized equation for a 2nd order lowpass
lter:
VOUTDIFF
VINDIFF
=
Gain
1+
s
2πfO Q
+ s
2
2πfO
()2
Both Gain and Q of the lter are based on component ratios,
which match and track extremely well over temperature.
The corner frequency of the lter is a function of an RC
product. This RC product is trimmed to ±1% (typical) and
is not expected to drift by more than ±1% from nominal
over the entire temperature range –40°C to 85°C. As a
result, fully differential lters with tight magnitude, phase
tolerance and repeatability are achieved.
Although Figure 3 implies a differential input, the LTC6601
easily accepts single-ended inputs to either input, and will
faithfully replicate the signal at the output in differential
form.
The LTC6601’s output common mode voltage, dened as
the average of the two output voltages, is independent of
the input common mode voltage, and is adjusted by apply-
ing a voltage on the VOCM pin. If the pin is left open, there
is an internal resistive voltage divider, which develops a
Figure 3. Basic Filter Topology and Equations
–
+
C1
R3
R2
R3
R1
C2
C1
VOUT(DIFF)
66012 F03
VIN(DIFF)
C2
fO =
1
2
R2 R3 C1 C2
Q=
C2
C1
R3
R2
1
1+ 1+ GAIN
R3
R2
–
C2
C1
GAIN =
R2
R1
f3dB =
fO
6089
3568 Q4 1788 Q2 + 447
()+1.287105 2Q2 1
()
507.6 Q
Q =
0.2236 fO
2.109 105
9.891 1012 f3dB
4
5.486 109 fO
4
()+120 5.526109 f
3dB
2 + 3.082 106 fO2
()
16 fO
2 8.29 109 f3dB2 + 4.127 109 fO2
() 6.6381010 f
3dB
4
()
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| LTC6601IUF-1#PBF | 功能描述:IC DRVR FILTER/ADC LN 20-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC6601IUF-1#TRPBF | 功能描述:IC DRVR FILTER/ADC LN 20-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC6601IUF-1-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Confi gurable Filter/ADC Driver |
| LTC6601IUF-1-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Confi gurable Filter/ADC Driver |
| LTC6601IUF-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Low Power, Low Distortion, 5MHz to 27MHz, Pin Confi gurable Filter/ADC Driver |
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