LT1007CH - Low-Noise Precision Op Amp | Analog Devices
料号： LT1007CH ✓ 量产中LT1007CH 概述
直接替换替代料： LT1007CH ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料LT1007CH 最大额定值与电气特性
| Amplifier Type | Single low-noise, high-speed precision operational amplifier |
| Circuit Count | 1 circuit |
| Wideband Input Noise | 2.5 nV/√Hz |
| Guaranteed Noise at 10 Hz | 4.5 nV/√Hz |
| Guaranteed Noise at 1 kHz | 3.8 nV/√Hz |
| Low-Frequency Peak-to-Peak Noise | 60 nV peak-to-peak from 0.1 Hz to 10 Hz |
| 1/f Corner Frequency | 2 Hz |
| Input Offset Voltage | 10 µV |
| Input Offset Voltage Drift | 0.2 µV/°C |
| Common-Mode Rejection | 130 dB |
| Power-Supply Rejection | 130 dB |
| 封装 | TO-5 |
| 安装类型 | Through-hole |
LT1007CH to-5 引脚配置指南
LT1007CH（to-5 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LT1007CH.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LT1007CH 适用于 6 应用s: Precision Sensor Instrumentation, Low-Noise Signal Conditioning, Low-Level Bridge and Strain Measurements, Audio and Microphone Preamplification, Medical and Laboratory Measurement, High-Resolution Analog Measurement.
Precision Sensor Instrumentation
The LT1007CH is suitable for amplifying low-level sensor outputs where input-referred noise, offset error, and drift set the measurement floor. Its 2.5 nV/√Hz wideband noise, guaranteed 4.5 nV/√Hz at 10 Hz, and 10 µV offset voltage are valuable when the signal source resistance is high enough for amplifier noise to dominate. The 130 dB common-mode and power-supply rejection figures also help suppress coupled disturbances. Use the device in a grounded, temperature-stable layout, keep the two input leads adjacent, and verify the actual common-mode and output-swing limits from the manufacturer datasheet.
Low-Noise Signal Conditioning
The LT1007CH can condition small analog signals whose information content lies close to the amplifier noise floor. With 3.8 nV/√Hz guaranteed noise at 1 kHz and typical 60 nV peak-to-peak noise from 0.1 Hz to 10 Hz, the part is appropriate for precision gain stages ahead of measurement or conversion. The 10 µV offset and 0.2 µV/°C drift must be included in the system error budget, especially across changing ambient temperatures. Short input traces, symmetrical input routing, clean grounding, and supply bypassing are essential because board leakage and thermal gradients can otherwise negate the device’s exceptional low-frequency noise performance.
Low-Level Bridge and Strain Measurements
The LT1007CH fits bridge and strain-gauge front ends that require low voltage noise and excellent DC rejection. The 130 dB common-mode rejection is especially relevant when the bridge is excited by a supply and its small differential output is superimposed on a larger common-mode voltage. The LT1007’s 2.5 nV/√Hz wideband noise limits amplifier-added noise, while its 0.2 µV/°C drift contributes to total measurement uncertainty. Actual bridge excitation, gain, resistor matching, input bias current, and supply operating range must be verified because the supplied data does not quantify those design limits.
Audio and Microphone Preamplification
The LT1007CH can serve as a very-low-noise preamplifier for high-impedance microphones, pickups, and other audio sources. Its wideband noise of 2.5 nV/√Hz is below the thermal noise associated with a 400 Ω resistor, while the typical 60 nV peak-to-peak 0.1 Hz-to-10 Hz figure supports low-frequency audio work. The tradeoff is that the verified material does not provide the LT1007CH bandwidth, output drive, or common-mode limits, and the TO-5 package offers limited bandwidth relative to modern surface-mount alternatives. Confirm those parameters and use short, shielded input routing before using it in a new audio design.
Medical and Laboratory Measurement
The LT1007CH is applicable to laboratory and medical instrumentation when very small signals must be measured with low added noise. The combination of 2.5 nV/√Hz wideband noise, 10 µV offset voltage, 0.2 µV/°C drift, and 130 dB rejection allows the amplifier to preserve signals close to the source noise floor. For medical equipment, system-level safety, isolation, leakage, and qualification requirements remain separate from the op amp specifications. The verified data does not state whether this exact ordering option is AEC-Q100 qualified or medical-grade certified, so compliance must be confirmed from the current manufacturer product documentation.
High-Resolution Analog Measurement
The LT1007CH is useful as the amplifier immediately preceding a high-resolution ADC when the analog input is small and source impedance is relatively high. Low amplifier noise prevents the front end from masking the converter’s useful resolution, while 130 dB power-supply rejection can reduce sensitivity to supply ripple. The 10 µV offset and 0.2 µV/°C drift should be included in a calibration and temperature-error budget. Designers must also confirm that the signal bandwidth, settling behavior, and output range of the LT1007CH support the intended ADC acquisition time, because those values are not present in the supplied search excerpts.
工程参考数据： LT1007CH ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | TO-5 |
| Brand | Analog Devices |
| Wideband Input Noise | 2.5 nV/√Hz |
| Guaranteed Noise at 10 Hz | 4.5 nV/√Hz |
| Guaranteed Noise at 1 kHz | 3.8 nV/√Hz |
| Low-Frequency Noise | 60 nV peak-to-peak from 0.1 Hz to 10 Hz |
| Input Offset Voltage | 10 µV |
| Offset Voltage Drift | 0.2 µV/°C |
| Common-Mode Rejection | 130 dB |
| Power-Supply Rejection | 130 dB |
关键差异点
- Exceptionally low wideband input noise （对比 LT1007CS8#PBF)
- Guaranteed low-frequency noise performance （对比 LT1007CJ8)
- Precision DC performance for low-level signals （对比 LT1007CSW#PBF)
设计说明
Keep the two input leads physically close, route them as a compact differential pair, and minimize loop area around the sensitive input node. The Analog Devices manufacturer datasheet specifically advises that package leads should be short, the two input leads should be close together, and they should be maintained at the same temperature. These practices reduce susceptibility to thermoelectric effects, air currents, and electromagnetic pickup that could otherwise increase the effective noise or offset of this extremely low-noise amplifier.
Use a quiet, stable ground reference and place power-supply bypass capacitors close to the amplifier pins. The verified data confirms 130 dB power-supply rejection but does not provide the recommended capacitor values, so capacitor selection must follow the official LT1007/LT1037 datasheet. Avoid long supply traces and noisy switching nodes near the input and reference paths. If the source has very high impedance, guard the input node and account for board-surface leakage, contamination, and guard-ring construction.
Do not assume that a functional equivalent is a direct replacement. The verified comparison identifies LT1007CH as TO-5, while LT1007CS8#PBF uses SOIC-8 and LT1007CJ8 uses an 8-pin CERDIP. Forum-mentioned devices such as OPA227, TLE2027, LT1014, and OPA277 are not confirmed as pin-compatible TO-5 alternatives. A replacement requires verification of pin assignments, supply range, input and output common-mode limits, unity-gain stability, offset, noise, and package lead geometry.
Keep the two inputs at similar temperature because temperature gradients across the input pair can create offset drift beyond the specified 0.2 µV/°C value. Avoid mounting the TO-5 package near a hot regulator, power resistor, processor, or vent stream. The supplied data does not provide maximum junction temperature, thermal resistance, supply voltage, or quiescent current, so an actual dissipation calculation cannot be completed without the manufacturer electrical-characteristics tables.
合规信息
The supplied search excerpts do not state the exact RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status of LT1007CH. Current manufacturer product and compliance documentation should be checked before qualification.
