Phono preamp with precision RIAA equalisation

2 years ago 1671
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

One channel of a moving magnet phono cartridge preamp with very accurate conformance to the RIAA qualisation curve, based on the design shown in Fig 16 of:

http://www.ti.com/lit/an/slyt145/slyt145.pdf

but with the addition of R10 and C8 to remove severe HF peaking in V(BUF) at >100kHz due to capacitive loading of U1 by the input of the bandpass filter implemented by U3.

Fork the project and then press CTRL+R to run the simulation.

Set one and only one of the 'ac' (frequency domain analysis) or 'tran' (time domain analysis) spice directives to have 'text type = spice' in right hand panel.

Note that the time domain plot takes some time to settle into steady state due to frequency response of the amplifier.

Documents

Moving magnet phono cartridge preamp

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted
1 OP27_AD U1,U2,U3,U4 DIP08 4
2 SIN(0 100m 1k) AC 1 0 V1 2P-5.0 1
3 {VS} V2,V3 2P-5.0 2
4 47k R11 R0805 1
5 11k R1,R9 R0805 2
6 10k R2 R0805 1
7 100k R3 R0805 1
8 22k R4 R0805 1
9 91k R5 R0805 1
10 220k R7,R6 R0805 2
11 68k R8 R0805 1
12 330n C5 C0805 1
13 22n C2,C3,C4 C0805 3
14 27n C1 C0805 1
15 330p C6 C0805 1
16 470p C7 C0805 1
17 75 R10 R0805 1
18 430p C8 C0805 1

Attachments

None
Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.