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ADS4125 bảng dữ liệu(PDF) 6 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  12-Bit, 200-MSPS, Ultralow-Power ADC
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ADS4125 bảng dữ liệu(HTML) 6 Page - Texas Instruments

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ADS4128
SBAS578 – MAY 2012
www.ti.com
ELECTRICAL CHARACTERISTICS: GENERAL
Typical values are at +25°C, AVDD = 1.8 V, DRVDD = 1.8 V, 50% clock duty cycle, and 0-dB gain, unless otherwise noted.
Minimum and maximum values are across the full temperature range: TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, and
DRVDD = 1.8 V.
ADS4128
PARAMETER
MIN
TYP
MAX
UNIT
ANALOG INPUTS
Differential input voltage range
2
VPP
Differential input resistance (at dc); see Figure 41
> 1
M
Ω
Differential input capacitance; see Figure 42
4
pF
Analog input bandwidth
550
MHz
Analog input common-mode current (per input pin)
0.6
µA/MSPS
VCM
Common-mode output voltage
0.95
V
VCM output current capability
4
mA
DC ACCURACY
Offset error
–15
2.5
15
mV
Temperature coefficient of offset error
0.003
mV/°C
Gain error as a result of internal reference inaccuracy
EGREF
–2
2
%FS
alone
EGCHAN
Gain error of channel alone
–0.2
±1
%FS
Temperature coefficient of EGCHAN
0.001
Δ%/°C
POWER SUPPLY
IAVDD
Analog supply current
85
113
mA
Output buffer supply current
LVDS interface with 100-
Ω external termination
43
mA
Low LVDS swing (200 mV)
Output buffer supply current
LVDS interface with 100-
Ω external termination
55
72
mA
IDRVDD(1)
Standard LVDS swing (350 mV)
Output buffer supply current(1)(2)
CMOS interface(2)
33
mA
8-pF external load capacitance
fIN = 2.5 MHz
Analog power
153
mW
Digital power
LVDS interface
77
mW
Low LVDS swing (200 mV)
Digital power
CMOS interface(2)
59
mW
8-pF external load capacitance
fIN = 2.5 MHz
Global power-down
10
25
mW
Standby
185
mW
(1)
The maximum DRVDD current with CMOS interface depends on the actual load capacitance on the digital output lines. Note that the
maximum recommended load capacitance on each digital output line is 10 pF.
(2)
In CMOS mode, the DRVDD current scales with the sampling frequency, the load capacitance on the output pins, input frequency, and
the supply voltage (see the CMOS Interface Power Dissipation section in the Application Information).
6
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Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s): ADS4128


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