Electronic Components Datasheet Search |
|
MAX3806 Datasheet(PDF) 7 Page - Maxim Integrated Products |
|
MAX3806 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 9 page Receiver for Optical Distance Measurement _______________________________________________________________________________________ 7 Detailed Description The MAX3806 preamplifier consists of a selectable-gain transimpedance amplifier, a selectable 14dB attenuator, and an output-driver block. The selectable-gain transim- pedance amplifier linearly boosts the signal from the photodiode. This block is followed by an attenuator block that allows the user to attenuate the signal by 14dB selected by the ATT pin. The final block is the out- put driver that can be disabled by asserting the DIS pin. Transimpedance Amplifier The selectable-gain transimpedance amplifier is con- trolled by the GAIN pin. See Table 1 for gain settings. Attenuator The attenuator block can be set to pass the signal through to the output stage with 0dB of attenuation (ATT forced low) or with 14dB of attenuation (ATT forced high). Output Driver The output driver is designed to drive an AC-coupled load with an impedance of 2k Ω or greater. The output can be disabled by asserting the DIS pin high. When the output is disabled, the OUT pin goes to a high- impedance state. See Figure 1 for the equivalent output circuit. WARNING: The output is designed to be AC-coupled to a high-impedance load. Operating the part with its output DC-coupled to GND through a 2k Ω or less load may damage the output. Applications Information Settling Time Settling time is the required time for the output to achieve the final steady-state or AC amplitude swing after a setting has been changed on the MAX3806. The output common-mode voltage shifts when a change is Pin Description PIN NAME FUNCTION 1, 12 VCC 5V Power-Supply Connection 2 IN Amplifier Input. Accepts AC-coupled photodiode input current. 3, 4 GND Supply Ground 5 ATT CMOS/TTL Input. Assert this pin high to enable a 14dB attenuator in the amplifier. Force this pin low to disable the attenuator. Contains internal 40k pulldown resistor. Connect to GND if not used. 6, 8, 11 N.C. Not Connected. This pin is not internally connected. 7 GAIN CMOS/TTL Input. Selects amplifier gain setting. Force high for 60k . Force low for 30k . Contains internal 40k pulldown resistor. 9 OUT Amplifier Output. An increase in current into the IN pin causes the voltage at the OUT pin to decrease. OUT must be AC-coupled to a load of 2k or greater. 10 DIS CMOS/TTL Input. Force high to disable the output of the MAX3806. Force low to enable the output. Contains internal 60k pullup resistor. — EP Exposed Pad. The exposed pad must be soldered to circuit board ground for proper thermal and electrical performance. Table 1. Transimpedance Gain Settings GAIN TRANSIMPEDANCE (k ) LINEAR RANGE (μAP) BANDWIDTH (MHz) 0 30 IIN 40 98 1 60 IIN 20 49 |
Similar Part No. - MAX3806 |
|
Similar Description - MAX3806 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |