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Summary of Contents for NF SA-240F5
- Page 1 LOW NOISE FET AMPLIFIER SA-240F5 INSTRUCTION MANUAL NF Corporation...
- Page 3 DA00069468-002 LOW NOISE FET AMPLIFIER SA-240F5 INSTRUCTION MANUAL...
- Page 5 This chapter explains the basic operations of the panels. Maintenance This chapter describes a method for simply inspecting operation. Specifications This chapter gives specifications (functions and perfoemance). Reference Data This chapter shows the general electrical characteristics of a normal SA-240F5. SA-240F5...
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Page 6: Safety Precautions
Safety Precautions To ensure safe use, be sure to observe the following safety precautions. NF Corporation shall not be held liable for damages that arise from a failure to observe these safety precautions or warnings or cautions in the instruction manual. - Page 7 ● Disposal of this product a) Use the servies of an industrial waste disposal contractor for disposal of the entire product. b) This product does not include batteries. c) This product does not include mercury. SA-240F5...
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Page 8: Table Of Contents
Absolute maximum ratings ................. 5-2 Input ........................5-2 Output ......................... 5-3 Amplifier ......................5-3 Power supply ....................... 5-4 General ........................ 5-4 Notes ........................5-5 External view ...................... 5-6 Reference Data ....................6-1 Reference data ..................... 6-2 Voltage gain frequency characteristic ..............6-2 SA-240F5... - Page 9 Pulse response ..................... 6-2 Equivalent input noise voltage density .............. 6-3 PSRR (Power Supply Rejection Ratio) ..............6-3 Power-on drift (output offset voltage) ..............6-4 Time drift (output offset voltage) ................ 6-4 Temperature drift ....................6-5 SA-240F5...
- Page 10 Figure 6-3 Equivalent input noise voltage density (input shorted)......6-3 Figure 6-4 PSRR ......................6-3 Figure 6-5 Power-on drift ................... 6-4 Figure 6-6 Time drift ....................6-4 Figure 6-7 Temperature drift (20 C reference) ............6-5 Table 2-1 List of contents ................... 2-2 SA-240F5...
- Page 11 1. Outline Overview ......................1-2 Features ....................... 1-2 Applications ......................1-3 Circuit functions ....................1-3 SA-240F5...
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Page 12: Overview
1.1 Overview Overview The SA-240F5 is a low-noise amplifier that has an equivalent input noise voltage density of 1.2 nV/ Hz , voltage gain of 40 dB, DC coupling, and FET input. The frequency band is from DC to 20 MHz. -
Page 13: Applications
(5) Improvement of noise characteristics for a lock-in amplifier. Circuit functions The SA-240F5 is a voltage amplifier that amplifies the input voltage with a gain of 40 dB. The Rin SELECT can select the input resistance. The LPF SELECT can selects from THRU (no use the LPF) or 1 MHz (use the LPF). - Page 14 (BLANK) SA-240F5...
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Page 15: Preparation Before Use
2. Preparation before Use Checking before use ..................... 2-2 Conditions for installation location ................ 2-3 Power supply ......................2-4 2.3.1 Connecting to low noise DC power supply LP series ........2-5 2.3.2 Connecting to DC power supply ..............2-6 SA-240F5... -
Page 16: Checking Before Use
* The bottom plate is attached to the main unit by four plastic screws (M3×6 mm). Optional Item ● Optional items below are separately available. If required, please contact NF or one of our agents. PA-001-2985: SMA SHORT PLUG PA-001-2986: SMA-BNC ADAPTER... -
Page 17: Conditions For Installation Location
• Where is a lot of vibration. Noise may increase, or a malfunction may result. ● For heat dissipation, make sure there is a distance of at least 2 cm between the front panel (the panel on which the model name appears) and surrounding objects. SA-240F5... -
Page 18: Power Supply
We provide the excellent stability and low noise performance DC power supply LP series. For information on those products, please contact the NF corporation or one of our agents. WARNING Do not connect this product to an AC outlet, because doing so is dangerous. -
Page 19: Connecting To Low Noise Dc Power Supply Lp Series
The OUTPUT CABLE A (PA-001-2372) is available to connect this product to LP series power supply. If you require the cable, please contact NF or one of our agents. The following figure shows the connection using the OUTPUT CABLE A. The output of LP series power supply is set as ±15 V. -
Page 20: Connecting To Dc Power Supply
When connecting this product to a stabilized DC power supply, it is convenient to use the PA-001-3018 POWER SUPPLY CABLE that is available for separate purchase. For information on this cable, please contact the NF corporation or one of our agents. The connection diagram for when the PA-001-3018 POWER SUPPLY CABLE is used is illustrated in the following figure. - Page 21 ・This product does not operate by single power supply (+30 V / GND). Be sure to use a dual power supply (+15 V / GND / −15 V). ・Do not plug / unplug the power cable while the power supply is turned on. That may result in damage to this product. SA-240F5...
- Page 22 (BLANK) SA-240F5...
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Page 23: Panel Features And Basic Operations
3. Panel Features and Basic Operations Panel component names and functions ..............3-2 Input connection and installation ................3-4 Output connection ....................3-5 Turning on power and warm-up time ..............3-5 Configuration of Rin SELECT ................3-5 SA-240F5... -
Page 24: Panel Component Names And Functions
To prevent damage to the switch, take care to not use unreasonable force. The recommended size for the screwdriver tip is 1.8 to 2.0 mm of length and 0.4 to 0.5 mm of width. The maximum permissible torque for changing the switch setting is 10 mN·m. SA-240F5... -
Page 25: Mounting Holes
The bottom plate is mounted to this product using 6 mm plastic screws (M3). ⑥ ⑥ ③ ② ① ④ ⑤ ⑥ ⑥ ⑦ ⑦ ⑦ ⑦ Figure 3-1 Front and rear panel views. SA-240F5... -
Page 26: Input Connection And Installation
Do not connect this product to an AC outlet, because doing so is dangerous. Attention ・The signal GND and case have the same electric potential. Caution is required when giving a potential to the case or signal GND because doing so may cause electric shock. SA-240F5... -
Page 27: Output Connection
Figure 3-2 Notes for the signal source resistance and the OPEN setting ×100 ×100 >>100MΩ OPEN OPEN coupled Vsig not available Vsig not available (a) Large signal source resistance (b) AC coupling Figure 3-3 Examples of incorrect connection for OPEN setting SA-240F5... -
Page 28: Figure 3-4 Relationship Between The Input Bias Current And The Offset Voltage
(b) 0.1 µF and 100 MΩ Transient response characteristic for high-pass filter CR ハイパスフィルタの過渡応答特性 Immediately 100% after operation 動作直後 0.1μF + 100MΩ 0.1μF + 1MΩ 安定値 Stable value 0.001 0.01 Time 時間 [sec] (c) Comparison of transient responses Figure 3-5 Stability time for AC coupling SA-240F5... -
Page 29: Maintenance
Before maintenance ....................4-2 Dairy maintenance ....................4-2 Storage, repacking and transportation ..............4-2 Function test ......................4-3 4.4.1 Consumption Current (with No Signal) ............4-3 4.4.2 Operation check ..................... 4-4 4.4.3 Checking the equivalent input offset voltage ..........4-6 SA-240F5... -
Page 30: Before Maintenance
・ Function test that is necessary for periodical inspection, incoming inspection, or function check after repair If the results of function test are not satisfactory, please contact NF or one of our agents to request calibration or repair. Dairy maintenance ●... -
Page 31: Function Test
Consumption Current (with No Signal) Check the consumption current if the power supply has a current monitor. This product is good if the consumption current is ± 45 mA within ± 10 mA when input and output are open. SA-240F5... -
Page 32: Operation Check
), offset of 0 mV and frequency of 1 kHz. If waveforms like those in Figure 4-2 are displayed on the oscilloscope, this is good. Signal generator DC power supply divider SMA to BNC conversion adapter SMA to BNC conversion adapter Oscilloscope Figure 4-1 Connection diagram for checking operation SA-240F5... -
Page 33: Figure 4-2 Input Voltage Waveforms And Output Voltage Waveforms
4.4 Function test CH-1: 100mV / DIV CH-2: 10V / DIV 0.5ms/dIV Figure 4-2 Input voltage waveforms and output voltage waveforms SA-240F5... -
Page 34: 4.4.3 Checking The Equivalent Input Offset Voltage
1 MHz setting. Output offset voltage Equivalent input offset voltage [µV] = times Short plug SMA to BNC conversion adapter Digital multimeter Figure 4-3 Connection diagram for checking equivalent input offset voltage SA-240F5... -
Page 35: Specifications
5. Specifications Absolute maximum ratings ..................5-2 Input ........................5-2 Output ........................5-3 Amplifier ....................... 5-3 Power supply ......................5-4 General ......................... 5-4 Notes ........................5-5 External view ......................5-6 SA-240F5... -
Page 36: Absolute Maximum Ratings
5 fA/ Hz f=100 Hz Equivalent input offset voltage Within ±40 µV Input shorted, LPF=THRU Within ±60 µV Input shorted, LPF=1 MHz ±0.5 µV/°C 0 °C to 40 °C, LPF=THRU ±0.6 µV/°C 0 °C to 40 °C, LPF=1 MHz SA-240F5... -
Page 37: Output
LPF Cutoff frequency (－3 dB) 1 MHz, Reference frequency is 1 kHz Input / Output phase Non-inverted Total harmonic distortion 0.004 % f=1 kHz, output level 20 V , and sum up to 5th harmonic, noise is not included SA-240F5... -
Page 38: Power Supply
Weight Approx. 105 g without bottom plate Approx. 125 g with bottom plate RoHS Directive 2011/65/EU EN61326-1 EN61326-2-1 Safety EN61010-1 *1 : It's applied to a product with CE marking indication in a bottom. SA-240F5... -
Page 39: Notes
∙ Use beyond the absolute maximum ratings and operating temperature range may load to characteristic deterioration of damage on the internal circuit. ∙ Static electricity may cause characteristic deterioration or damage. SA-240F5... -
Page 40: External View
5.8 External view External view Figure 5-1 External view. SA-240F5... -
Page 41: Reference Data
Voltage gain frequency characteristic ..............6-2 Pulse response ..................... 6-2 Equivalent input noise voltage density ..............6-3 PSRR (Power Supply Rejection Ratio) ..............6-3 Power-on drift (output offset voltage) ..............6-4 Time drift (output offset voltage) ................6-4 Temperature drift ....................6-5 SA-240F5... -
Page 42: Reference Data
6.1 Reference data Reference data This chapter shows the reference data of a SA-240F5. The performance of this product may not achieve the level of these data. However, all products have been strictly tested before shipment to check that they meet the specifications. -
Page 43: Equivalent Input Noise Voltage Density
1M 10M Frequency [Hz] Figure 6-3 Equivalent input noise voltage density (input shorted). PSRR (Power Supply Rejection Ratio) 100k 1M 100k 1M Frequency [Hz] Frequency [Hz] (a) The positive power supply (b) The negative power supply Figure 6-4 PSRR SA-240F5... -
Page 44: Power-On Drift (Output Offset Voltage)
*The reference voltage is 1 hour after turning on the power supply Figure 6-5 Power-on drift Time drift (output offset voltage) -0.2 -0.4 -0.6 -0.8 Time[h] *The reference voltage is 1 hour after turning on the power supply Figure 6-6 Time drift SA-240F5... -
Page 45: Temperature Drift
6.8 Temperature drift Temperature drift ：±0.5 μV/°C ：Average value ：Average value ±σ ‐5 ‐10 ‐15 ‐20 ‐10 Temperature [℃] Figure 6-7 Temperature drift (20 C reference) SA-240F5... -
Page 46: Warranty
For repair service under warranty, the product must be returned to either NF or an agent designated by NF. The Purchaser shall prepay all shipping cost, duties and taxes for the product to NF from another country, and NF shall pay shipping charges to return the product to the purchaser. - Page 47 Information provided in this manual is intended to be accurate and reliable. However, we assume no responsibility for any damage regarding the contents of this manual. We assume no responsibility for influences resulting from the operations in this manual. Copyright 2019, NF Corporation SA-240F5 INSTRUCTION MANUAL NF Corporation...
- Page 48 NF Corporation 6-3-20, Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508 JAPAN...
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