# 600fA Transimpedance Amplifier 140dB @ DC - 10kHz

600fA input referred current noise transimpedance amplifier (TIA) with 140dB gain @ DC - 10kHz ±2.75V dual supply.

- **Seller:** [Verdawave](https://www.lectronz.com/stores/verdawave), Vaughan, Ontario, Canada
- **Price:** $69.99 (USD, before shipping and taxes)
- **Availability:** In stock
- **Categories:** Test equipment, Sensors, Accessories
- **Product page:** https://www.lectronz.com/products/-600fa-transimpedance-amplifier-140db

## Images

![600fA Transimpedance Amplifier 140dB @ DC - 10kHz](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NjM4NzEsInB1ciI6ImJsb2JfaWQifX0=--3807c268d6a409d20045a6fbcb0b05305fdcf722/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/tia-image-1_4-no-background.png)
![600fA Transimpedance Amplifier 140dB @ DC - 10kHz](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NjM4NzUsInB1ciI6ImJsb2JfaWQifX0=--6701bc6dcef7ba9db2c32fab892143ab27127883/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/tia-image-2_2-no-background.png)
![600fA Transimpedance Amplifier 140dB @ DC - 10kHz](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NjM4NzksInB1ciI6ImJsb2JfaWQifX0=--5b9fc5c44a2fb9627d688d27b886aacf556d041d/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/tia-image-3_2-no-background.png)
![600fA Transimpedance Amplifier 140dB @ DC - 10kHz](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NjM4ODMsInB1ciI6ImJsb2JfaWQifX0=--e63c0c79e2bb3ae4a54ee8b254af7f3752f75237/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/tia-image-4_2-no-background.png)

## Description

# fTIA140-000 Transimpedance Amplifier

The fTIA140-000 is a specialized ultra-low-noise transimpedance amplifier (TIA) module designed to interface directly with high-impedance low-frequency current sources, such as precision photodiodes, chemical sensors, or living biological material.
* The module achieves a total gain of 140 dB with an exceptional input referred current noise of ~600 fA.
* Powering the module requires an isolated dual-rail power supply from ±1.2 V to ±2.75 V.
* The module is of dimensions 50 mm × 37.4 mm (L × W) and features 4 × M4 mounting holes.
* A surface-mount electromagnetic interference (EMI) snap-on shield is included.

### Technical Specifications
---
| Parameter | Conditions | Specification |
| :--- | :--- | ---: |
| **Transimpedance gain** | — | 1 MΩ (120 dBΩ) |
| **3 dB bandwidth** | C<sub>in</sub> = 10 pF, C<sub>feedback</sub> = 10 pF | 16 kHz |

<p>&nbsp;</p>

##### Input
| Parameter | Conditions | Specification |
| :--- | :--- | ---: |
| **Input current range** | ±2.75 V rails | ±275 nA |
| **Input current noise density** | 10.24 kHz, C<sub>in</sub> = 10 pF | 600 fA/√Hz |
| **Coupling** | — | DC |

<p>&nbsp;</p>

##### Output
| Parameter | Conditions | Specification |
| :--- | :--- | ---: |
| **Impedance** | Series resistor | 50 Ω |
| **Output stage gain** | Fixed voltage gain | 10 V/V (20 dB) |
| **Output voltage range** | High impedance | -2.7 V to 2.7 V |

<p>&nbsp;</p>

##### Power Supplies
| Parameter | Conditions | Specification |
| :--- | :--- | ---: |
| **Positive supply voltage** | Relative to GND | 1.2 V to 2.75 V |
| **Negative supply voltage** | Relative to GND | -2.75 V to -1.2 V |
| **Supply protection** | Reverse polarity structures | Integrated |
| **Quiescent current per rail** | No load current | 1.8 mA |

<p>&nbsp;</p>

##### Mechanical
| Parameter | Conditions | Specification |
| :--- | :--- | ---: |
| **Dimensions** | Custom PCB factor | 50 mm × 37.4 mm × 1.6 mm |
| **Shielding** | Optional snap-fit RF shield | Integrated SMT Clips |

### Noise Characterization
---
<img src="https://www.cdn.cerybra.com/tia-noise-recordings-1.png" alt="noise spectral density graph" width="400">

*Figure 1: Noise recordings under C<sub>in</sub> = 10 pF load taken from the output of the final gain stage. In order to get back the input referred current density, these values must be scaled by the TIA gain.*

### Frequency Response
---
![frequency response graph](https://www.cdn.cerybra.com/frequency-response-1.png)

*Figure 2: Frequency response results under C<sub>in</sub> = 0 pF load taken from the output of the final gain stage. The final traces are the result of 50 experiment averages. All trials used a chirp source of 100.005 mV amplitude fed through an input 1 MΩ resistor. The ~20 dB reported measurements are relative to the source magnitude, not the true input.*

### Feedback
---
All products are tested prior to shipment. If you believe that you have been sent a defective unit, please contact us immediately. If you find any error in the technical specifications, please contact us immediately.

## Shipping policy

Ensure that your shipping information is correct prior to placing an order. We do not assume responsibility for any failure of due diligence on the part of the buyer.

In the event of buyer orders placed from remote region locations, we reserve the right to modify the shipping cost proportionally. The buyer will be notified prior to shipping for confirmation.  If you are unsure about shipping to your area, please contact us immediately. 

It is the buyer’s responsibility to cover any unforeseen import duties, taxes, or any other outstanding fees. Ensure that you are familiar with your country’s customs procedures. Ensure that you are familiar with your country’s customs procedures.