參數(shù)資料
型號： TLV2556MPWREPG4
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁數(shù)： 34/37頁
文件大?。?/td> 705K
代理商： TLV2556MPWREPG4
EXTERNAL REFERENCE SPECIFICATIONS
(1)
INTERNAL REFERENCE SPECIFICATIONS
(1)
SLAS598A – NOVEMBER 2008 – REVISED JULY 2009 ................................................................................................................................................... www.ti.com
PARAMETER
TEST CONDITIONS
MIN TYP(2)
MAX
UNIT
VCC = 4.5 V to 5.5 V
–0.1
0
0.1
Reference input voltage, REF–
V
VCC = 2.7 V to 3.6 V
–0.1
0
0.1
VCC = 4.5 V to 5.5 V
2
VCC
Reference input voltage, REF+
V
VCC = 2.7 V to 3.6 V
2
VCC
VCC = 4.5 V to 5.5 V
1.9
VCC
External reference input voltage
V
difference, (REF+) – (REF–)
VCC = 2.7 V to 3.6 V
1.9
VCC
VCC = 4.5 V to 5.5 V
1
External reference supply current
CS = 0 V
mA
VCC = 2.7 V to 3.6 V
0.7
Static
1
M
VCC = 5 V
During sampling/conversion
9
k
Reference input impedance
Static
1
M
VCC = 2.7 V
During sampling/conversion
9
k
(1)
Add a 0.1-
F capacitor between REF+ and REF– pins when external reference is used.
(2)
All typical values are at VCC = 5 V, TA = 25°C.
PARAMETER
TEST CONDITIONS
MIN TYP(2)
MAX
UNIT
Reference input voltage, REF–
VCC = 2.7 V to 5.5 V, REF– = Analog GND
0
V
VCC = 5.5 V, Internal 4.096-V VREF selected
3.95
4.065
4.25
Internal reference voltage delta, (REF+) – (REF–)
VCC = 5.5 V, Internal 2.048-V VREF selected
1.94
2.019
2.15
V
VCC = 2.7 V, Internal 2.048-V VREF selected
1.94
2.019
2.15
VCC = 5 V
20
Internal reference start up time
With 10-
F load
ms
VCC = 2.7 V
20
Internal reference temperature coefficient
VCC = 2.7 V to 5.5 V
±50
ppm/°C
(1)
When an internal reference is used, the following conditions are required:
a. Add 0.1-
F and 10-F capacitors between REF+ and REF– pins.
b. REF– must be connected to analog GND (the ground pin of the ADC).
(2)
All typical values are at VCC = 5 V, TA = 25°C.
6
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TLV2556-EP
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