參數(shù)資料
型號(hào)： MAX1227BCEE-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： 12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference
中文描述： 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
封裝： QSOP-16
文件頁(yè)數(shù)： 4/24頁(yè)
文件大?。?/td> 512K
代理商： MAX1227BCEE-T
M
12-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
4
_______________________________________________________________________________________
Note 1:
Tested at V
DD
= +2.7V, unipolar input mode.
Note 2:
Offset nulled.
Note 3:
Time for reference to power up and settle to within 1 LSB.
Note 4:
Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5:
The operational input voltage range for each individual input of a differentially configured pair is from GND to V
DD
. The
operational input voltage difference is from -V
REF
/ 2 to +V
REF
/ 2.
Note 6:
See Figure 3 (Input Equivalent Circuit) and the
Sampling Error vs. Source Impedance
curve in the
Typical Operating
Characteristics
section.
Note 7:
Fast automated test, excludes self-heating effects.
Note 8:
Supply current is specified depending on whether an internal or external reference is used for voltage conversions.
Temperature measurements always use the internal reference.
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V, f
SAMPLE
= 300kHz, f
SCLK
= 4.8MHz (50% duty cycle), V
REF
= 2.5V, T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25
°
C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL INPUTS (SCLK, DIN,
CS
,
CNVST)
Input Voltage Low
Input Voltage High
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUTS (DOUT,
EOC)
V
IL
V
IH
V
HYST
I
IN
C
IN
V
DD
x 0.3
V
V
V
DD
x 0.7
200
±0.01
15
mV
μA
pF
V
IN
= 0 or V
DD
±1.0
I
SINK
= 2mA
I
SINK
= 4mA
I
SOURCE
= 1.5mA
CS
= V
DD
CS
= V
DD
0.4
0.8
Output Voltage Low
V
OL
V
Output Voltage High
Tri-State Leakage Current
Tri-State Output Capacitance
POWER REQUIREMENTS
Supply Voltage
V
OH
I
L
C
OUT
V
DD
- 0.5
V
±0.05
15
±1
μA
pF
V
DD
2.7
3.6
2700
1800
1200
5
2000
1100
5
±1
V
During temp sense
f
SAMPLE
= 300ksps
f
SAMPLE
= 0, REF on
Shutdown
During temp sense
f
SAMPLE
= 300ksps
Shutdown
2200
1550
1000
0.2
1550
880
0.2
±0.2
Internal
reference
Supply Current (Note 8)
I
DD
External
reference
μA
Power-Supply Rejection
PSR
V
DD
= 2.7V to 3.6V; full-scale input
mV
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