參數(shù)資料
型號: MAX44268EWL+T
廠商: Maxim Integrated Products
文件頁數(shù): 5/15頁
文件大?。?/td> 0K
描述: IC COMPARATOR W/REF DUAL 9WLP
產(chǎn)品培訓模塊: Obsolescence Mitigation Program
標準包裝: 2,500
類型: 通用
元件數(shù): 2
輸出類型: 開路漏極
電壓 - 電源,單路/雙路(±): 1.8 V ~ 5.5 V
電壓 - 輸入偏移(最小值): 5mV @ 5V
電流 - 輸入偏壓(最小值): 0.15nA
電流 - 輸出(標準): 50mA
電流 - 靜態(tài)(最大值): 1.15µA
CMRR, PSRR(標準): 80dB PSRR
傳輸延遲(最大): 39µs
磁滯: 6mV
工作溫度: -40°C ~ 85°C
封裝/外殼: 9-WFBGA,WLBGA
安裝類型: 表面貼裝
包裝: 帶卷 (TR)
Maxim Integrated Products 13
MAX44268
1.3mm x 1.3mm, Low-Power
Dual Comparator with Reference
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Board Layout and Bypassing
Use 1.0FF bypass capacitors from VCC to GND. To maxi-
mize performance, minimize stray inductance by putting
this capacitor close to the VCC pin and reducing trace
lengths. Use 1nF bypass capacitors from REF/INA- to
GND as close as possible to the IC. Do not route noisy
traces near REF/INA-.
Jack Detect
The IC can be used to detect peripheral devices
connected to a circuit using comparator B. This includes
a simple jack-detect scheme for cell phone applica-
tions. Figure 8 shows how the device can be used in
conjunction with an external reference to detect an
accessory ID input. The open-drain output of
the devices allows the output logic level to be con-
trolled independent of the peripheral device’s load,
making interfacing and controlling external devices
as simple as monitoring a few digital inputs on a
microcontroller or codec.
Figure 8. Jack Detector Circuit
Chip Information
PROCESS: BiCMOS
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX44268EWL+T
-40NC to +85NC
9 WLP
+AJK
VPULL
ACCESSORY
ID
GND
OUT2
MAX44268
VCC
VREF
200kI
CONNECTOR
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