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參數(shù)資料
| 型號： | LTC1051CN8 |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP CHOPR-STBL DUAL 8-DIP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 放大器類型： | 斷路器（零漂移） |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 4 V/µs |
| 增益帶寬積： | 2.5MHz |
| 電流 - 輸入偏壓： | 15pA |
| 電壓 - 輸入偏移： | 0.5µV |
| 電流 - 電源： | 1mA |
| 電壓 - 電源，單路/雙路(±)： | 4.75 V ~ 16 V，±2.38 V ~ 8 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 8-PDIP |
| 包裝： | 管件 |
LTC1051/LTC1053
8
10513fa
LTC1051/LTC1053 as AC Amplifiers
Although initially chopper stabilized op amps were de-
signed to minimize DC offsets and offset drifts, the
LTC1051/LTC1053 family, on top of its outstanding DC
characteristics, presents efficient AC performance. For
instance, at single 5V supply, each op amp typically
consumes 0.5mA and still provides 1.8MHz gain band-
width product and 3V/s slew rate. This, combined with
almost distortionless swing to the supply rails (Figure 8),
makes the LTC1051/LTC1053 op amps nearly general
purpose. To further expand this idea (the “aliasing” phe-
nomenon) which can occur under AC conditions, should
be described and properly evaluated.
Aliasing
The LTC1051/LTC1053 are equipped with internal cir-
cuitry to minimize aliasing. Aliasing, no matter how small,
occurs when the input signal approaches and exceeds the
internal sampling rate. Aliasing is caused by the sampled
data nature of the chopper op amps. A generalized study
of this phenomenon is beyond the scope of a data sheet;
however, a set of rules of thumb can answer many
questions:
1. Alias signals can be generally defined as output AC
signals at a frequency of nfCLK ±m(xù)fIN. The nfCLK term is the
internal sampling frequency of the chopper stabilized op
amps and its harmonics; mfIN is the frequency of the input
signal and its harmonics, if any.
–
+
1/2
LTC1051
1051/53 F05a
R1
1k
R2
10k
1
2
3
fIN
0.8VP-P
0.1F
50pF
5V
–5V
VOUT
B: MAG
RANGE: 9dBV
STATUS: PAUSED
RMS: 25
20dBV
15dB
/DIV
–100
START: 100Hz
X: 1825Hz
BW: 47.742Hz
Y: – 70.72dBV
STOP: 5 100Hz
fIN = 750Hz
fCLK – fIN
2fIN
2fCLK – fIN
80dB
A: MAG
RANGE: 11dBV
STATUS: PAUSED
RMS: 25
20dBV
15dB
/DIV
–100
CENTER: 10 000Hz
X: 5550Hz
BW: 95.485Hz
Y: – 63.91dBV
SPAN: 10 000Hz
fIN = 10kHz
6fCLK – fIN
74dB
Figure 5a. Output Voltage Spectrum of 1/2 LTC1051 Operating as an Inverting Amplifier with Gain of 10,
and Amplifying a 750Hz/800mV, Input AC Signal
Figure 5b. Same as Figure 5a, but the AC Input Signal is 900mV, 10kHz
APPLICATIO S I FOR ATIO
WU
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| LTC1051CN8#PBF | 功能描述:IC OPAMP CHOPR-STBL DUAL 8-DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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