Mini-Circuits PWR-SEN-6G+
This post is about the Mini-Circuits USB power sensor
Inside view of the power head
Components
CY7C63743 CYPRESS enCoRe™ USB Combination Low-Speed USB and PS/2 Peripheral Controller
24LC512 512K I2C™ Serial EEPROM (Address: 0xA8)
ADR431 Ultralow Noise XFET Voltage References with Current Sink and Source Capability
AD7414 ±0.5°C Accurate, 10-Bit Digital Temperature Sensor, I2C
AD7791 Low Power, Buffered 24-Bit Sigma-Delta ADC, SPI
SMS7630-079LF SKYWORKS RF Schottky Diode
(not 100% sure! Marking: Anode)
How does it work?
The 5 resistors at the input form a combined 3dB resistive pad and RF termination. The RF diode (SMS7630-079LF) rectifies the signal, the capacitors on the DC side form a broadband shortcircuit for RF. Having the different capacitance values in the arrangement shown above (the pF very close to the diode) is very important for a flat frequency response.
USB Interface and Software
USB Interface information:
Bus 002 Device 009: ID 0fc5:1222 Delcom Engineering I/O Development Board
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0fc5 Delcom Engineering
idProduct 0x1222 I/O Development Board
bcdDevice 0.11
iManufacturer 1 MINI-CIRCUITS
iProduct 2 USB POWER SENSOR
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 18
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 250mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 0 (Defined at Interface level)
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Device Status: 0x0002
(Bus Powered)
Remote Wakeup Enabled
The uC is a Delcom USB Generation I controller (802670 USB G1 LS 16 IO CHIP SOIC24) which does require custom Delcom IO driver. Generation II uses USB HID driver instead.
