Difference between revisions of "User:Corecode/Microboard"
From Fixme.ch
(Created page with "== µC comparison == === AVR === http://www.atmel.com/dyn/resources/prod_documents/doc7766.pdf AVR * EEPROM * can run at 5V * 12 ADC inputs * JTAG * analog comparator * AD...") |
|||
| Line 41: | Line 41: | ||
==== MCP1725-ADJE/SN ==== | ==== MCP1725-ADJE/SN ==== | ||
| − | * | + | * [http://ww1.microchip.com/downloads/en/DeviceDoc/22026b.pdf MCP1725-ADJE/SN] |
* $0.56@1, $0.39@100 | * $0.56@1, $0.39@100 | ||
* Adjust with two resistors | * Adjust with two resistors | ||
| Line 56: | Line 56: | ||
==== SC195ULTRT ==== | ==== SC195ULTRT ==== | ||
| − | * | + | * [http://www.semtech.com/images/datasheet/sc195.pdf SC195ULTRT] |
* $0.96@1, $0.555@100 | * $0.96@1, $0.555@100 | ||
* Adjust with logic input pins | * Adjust with logic input pins | ||
| Line 68: | Line 68: | ||
==== NCP1521BSNT1G ==== | ==== NCP1521BSNT1G ==== | ||
| − | * | + | * [http://www.onsemi.com/pub_link/Collateral/NCP1521B-D.PDF NCP1521BSNT1G] |
* $0.92@1, $0.63@100 | * $0.92@1, $0.63@100 | ||
* Adjust with two resistors | * Adjust with two resistors | ||
Revision as of 02:50, 31 July 2011
Contents
µC comparison
AVR
[AVR]
- EEPROM
- can run at 5V
- 12 ADC inputs
- JTAG
- analog comparator
- ADC reference voltage
ARM
[ARM]
- higher frequency/MIPS
- 32bit architecture
- only up to 3.6V
- 8 ADC inputs
- hardware divide
- 400kS/s ADC
- integrated HID and MSC device driver
- integrated USB MSC boot loader (needs 12MHz crystal)
- higher active current
- lower deep-sleep current
- requires external LDO
- existing boards
Voltage regulators
Adjustable LDO
MCP1725-ADJE/SN
- MCP1725-ADJE/SN
- $0.56@1, $0.39@100
- Adjust with two resistors
- Extra parts: 2 R (+ 1 R for power good, 1 C for delayed power good)
- dropout 210mV - 350mV
- max input 6V
- max current 500mA
- output 2.3V - 5V, fixed version available at 1.8V, 2.5V, 3.3V
- required C: 4.7µF, 1µF
Adjustable switching regulator
SC195ULTRT
- SC195ULTRT
- $0.96@1, $0.555@100
- Adjust with logic input pins
- Extra parts: 1 L
- max input 6V
- max current 500mA
- output 0.8V - 3.3V
- required C: 4.7µF, 10µF; L: 1µH
- suggested layout given
NCP1521BSNT1G
- NCP1521BSNT1G
- $0.92@1, $0.63@100
- Adjust with two resistors
- Extra parts: 2 R, 1 L, 1 C
- max input 5.5V
- max current 600mA
- output 0.9V - 3.3V
- required C: 4.7µF, 18pF, 10µF; L: 2.2µH (or 4.7µF and 4.7µH)
