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参数资料
| 型号： | LT1007IS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC PREC OP-AMP HI-SPD SNGL 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 转换速率： | 2.5 V/µs |
| 增益带宽积： | 8MHz |
| 电流 - 输入偏压： | 15nA |
| 电压 - 输入偏移： | 20µV |
| 电压 - 电源，单路/双路(±)： | ±4 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
11
LT1007/LT1037
sn100737 100737fbs
The LT1007/LT1037 achieve their low noise, in part, by
operating the input stage at 120
A versus the typical 10A
of most other op amps. Voltage noise is inversely propor-
tional while current noise is directly proportional to the
square root of the input stage current. Therefore, the
LT1007/LT1037’s current noise will be relatively high. At
low frequencies, the low 1/f current noise corner fre-
quency (
≈120Hz) minimizes current noise to some extent.
In most practical applications, however, current noise will
not limit system performance. This is illustrated in the
Total Noise vs Source Resistance plot in the Typical
Performance Characteristics section, where:
Total Noise = [(voltage noise)2 + (current noise RS)
2 +
(resistor noise)2]1/2
Three regions can be identified as a function of source
resistance:
(i) RS ≤ 400. Voltage noise dominates
(ii) 400
≤ RS ≤ 50k at 1kHz
400
≤ RS ≤ 8k at 10Hz
(iii) RS > 50k at 1kHz
RS > 8k at 10Hz
Clearly the LT1007/LT1037 should not be used in region
(iii), where total system noise is at least six times higher
than the voltage noise of the op amp, i.e., the low voltage
noise specification is completely wasted.
TYPICAL APPLICATIONS
U
1007/37 TA03
365
1%
15k
5%
20k
TRIM
–
+
LT1037
2
15V
–15V
INPUT
3
7
6
4
OUTPUT
RN60C FILM RESISTORS
340k
1%
THE HIGH GAIN AND WIDE BANDWIDTH OF THE LT1037 (AND LT1007) IS
USEFUL IN LOW FREQUENCY, HIGH CLOSED-LOOP GAIN AMPLIFIER
APPLICATIONS. A TYPICAL PRECISION OP AMP MAY HAVE AN OPEN-LOOP
GAIN OF ONE MILLION WITH 500kHz BANDWIDTH. AS THE GAIN ERROR
PLOT SHOWS, THIS DEVICE IS CAPABLE OF 0.1% AMPLIFYING ACCURACY
UP TO 0.3Hz ONLY. EVEN INSTRUMENTATION RANGE SIGNALS CAN VARY
AT A FASTER RATE. THE LT1037’S “GAIN PRECISION-BANDWIDTH
PRODUCT” IS 200 TIMES HIGHER AS SHOWN.
FREQUENCY (Hz)
0.1
0.001
GAIN
ERROR
(%)
0.01
0.1
1
10
100
TYPICAL
PRECISION
OP AMP
LT1007
LT1037
GAIN ERROR =
CLOSED-LOOP GAIN
OPEN-LOOP GAIN
Gain 1000 Amplifier with 0.01% Accuracy, DC to 5Hz
Gain Error vs Frequency
Closed-Loop Gain = 1000
} Resistor noise
dominates
} Current noise
dominates
APPLICATIONS INFORMATION
WU
U
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1007MH | 制造商:Linear Technology 功能描述:OP Amp Single GP ±22V 8-Pin TO-5 |
| LT1007MH/883 | 制造商:Linear Technology 功能描述:OP Amp Single GP ±22V 8-Pin TO-5 制造商:Linear Technology 功能描述:OP Amp Single GP ??22V 8-Pin TO-5 |
| LT1007MJ8 | 制造商:Linear Technology 功能描述:OP Amp Single GP ±22V 8-Pin CDIP 制造商:Linear Technology 功能描述:OP Amp Single GP ??22V 8-Pin CDIP |
| LT1007MJG | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS |
| LT1007ML | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
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