 |
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
|
công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
ML2731CT bảng dữ liệu(PDF) 6 Page - Micro Linear Corporation |
|
||||||||||||||||||||||||||||||
ML2731CT bảng dữ liệu(HTML) 6 Page - Micro Linear Corporation |
|
|
6 / 12 page  ML2731 6 January, 2000 PRELIMINARY DATASHEET PRELIMINARY FUNCTIONAL DESCRIPTION INTRODUCTION EXTERNAL INTERFACES The ML2731 has 3 logic inputs: PAEN, NEGEN and PDN. These control lines are used to select the mode of operation to be either SLEEP, STANDBY, PRETX or TRANSMIT. (See Table 1) Table 1. Circuit Enable Logic N D PN E G E NN E A Pe d o M 1X X P E E L S 01 X Y B D N A T S 00 1 X T E R P 000 T I M S N A R T DESCRIPTION OF OPERATION Voltage Regulator The ML2731 integrates two low noise voltage regulators. The first regulator internally powers the crystal oscillator support circuit, negative voltage generator support circuit and other on chip circuits. The second regulator output (REGO) powers external circuits. (See Figure 1) It has a nominal voltage output of 2.9V and sources up to 50mA of current. The low noise output of this regulator makes it suitable for supplying voltage to sensitive components such as final frequency VCO’s. The regulator output is disabled in the SLEEP mode and is enabled in all other modes. Figure 1. Regulator Ouput Voltage vs. Load Current (REGO) MODE CONTROL Mode Functions The function of the ML2731 in each mode of operation: SLEEP All the circuits are disabled. Current drain is typically less than 1 mA. STANDBY Oscillator circuits, sine and square wave outputs and 3.0V voltage regulator output are all enabled. VPA output is disabled as well as all other circuits. PRETX Oscillator circuits, sine and square wave outputs, 3.0V voltage regulator output, and negative voltage generator are enabled. VBIAS is set to –3.0V. VPA output is disabled and PA bias control loop is inactive. TRANSMIT Crystal oscillator circuits, sine and square wave outputs, 3.0V voltage regulator, negative voltage generator, and VPA output are enabled, and VBIAS is voltage controlled so that the VPA current is proportional to the ICON input voltage. 2.92 2.90 2.88 2.86 2.84 CURRENT (mA) 020 30 50 40 10 |
Số phần tương tự - ML2731CT |
|
Mô tả tương tự - ML2731CT |
|
|
|
Link URL |
| Chính sách bảo mật |
| ALLDATASHEET.VN |
| Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |
Vietnamese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
