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ADS8638SRGET bảng dữ liệu(PDF) 5 Page - Texas Instruments

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tên linh kiện ADS8638SRGET
Giải thích chi tiết về linh kiện  12-Bit, 1MSPS, 4-/8-Channel, Bipolar-Input, SAR Analog-to-Digital Converter
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ADS8638SRGET bảng dữ liệu(HTML) 5 Page - Texas Instruments

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ADS8634
ADS8638
www.ti.com
SBAS541A
– MAY 2011 – REVISED AUGUST 2011
ELECTRICAL CHARACTERISTICS: ADS8634, ADS8638 (continued)
Minimum/maximum specifications at TA = –40°C to +125°C, fSAMPLE = 1MSPS, HVDD = 10V to 15V, HVSS = –10V to –15V,
AVDD = 4.75V to 5.25V, DVDD = 2.7V to 3.6V, and VREF = 2.5V, unless otherwise noted. Typical specifications at +25°C,
fSAMPLE = 1MHz, HVDD = 10V, HVSS = –10V, AVDD = 3.3V, DVDD = 3.3V, and VREF = 2.5V, unless otherwise noted.
ADS8634, ADS8638
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER-SUPPLY REQUIREMENTS
VAVDD
2.7
3.3
5.25
V
VDVDD
1.65
3.3
5.25
V
Supply voltage
VHVDD
10V
< VHVDD – VHVSS < 30V
5
10
15
V
VHVSS
10V
< VHVDD – VHVSS < 30V
–15
–10
0
V
At VAVDD = 2.7V to 3.6V and 1MHz throughput, normal mode
2.5
mA
with internal reference and temperature sensor off
IAVDD(dynamic)
At VAVDD = 4.75V to 5.25V and 1MHz throughput, normal mode
3.1
3.6
mA
with internal reference and temperature sensor off
At VAVDD = 2.7V to 3.6V and SCLK off, normal mode with
1.45
mA
internal reference and temperature sensor off
AVDD supply
IAVDD(static)
current
At VAVDD = 4.75V to 5.25V and SCLK off, normal mode with
1.5
1.9
mA
internal reference and temperature sensor off
At VAVDD = 2.7V to 5.25V, additional AVDD current with internal
IAVDD(ref)
(8)
180
µA
reference on and temperature sensor off
At VAVDD = 2.7V to 5.25V, additional AVDD current with internal
IAVDD(temp)
(9)
400
µA
temperature sensor on and internal reference off
IHVDD(dynamic)
HVDD = 15V and 1MSPS throughput
270
350
µA
HVDD supply
current
IHVDD(static)
HVDD = 15V and device static with SCLK off
5
µA
IHVSS(dynamic)
HVSS =
–15 V and 1MSPS throughput
520
µA
HVSS supply
current
IHVSS(static)
HVSS =
–15V and device static with SCLK off
5
µA
DVDD supply
IDVDD
DVDD = 3.3V, fSAMPLE = 1MSPS, DOUT load = 20pF
2.5
mA
current(10)
SCLK off, internal reference and temperature sensor off
10
µA
AVDD current
SCLK on, internal reference and temperature sensor off
160
µA
Power-down state
HVDD current
5
µA
HVSS current
5
µA
TEMPERATURE RANGE
Specified performance
–40
+125
°C
(8)
Add IAVDD(ref) to IAVDD(dynamic) or IAVDD(static)(as applicable), if internal reference is selected.
(9)
Add IAVDD(temp) to IAVDD(dynamic) or IAVDD(static)(as applicable), if internal temperature sensor is enabled.
(10) IDVDD consumes only dynamic current. IDVDD = CLOAD × VDVDD × number of 0 → 1 transitions in DOUT × fSAMPLE. IDVDD is a
load-dependent current; there is no current when the output is not toggling.
THERMAL INFORMATION
ADS8634/8RGE
THERMAL METRIC(1)
RGE
UNITS
24 PINS
θJA
Junction-to-ambient thermal resistance
32.6
θJCtop
Junction-to-case (top) thermal resistance
30.5
θJB
Junction-to-board thermal resistance
3.3
°C/W
ψJT
Junction-to-top characterization parameter
0.4
ψJB
Junction-to-board characterization parameter
9.3
θJCbot
Junction-to-case (bottom) thermal resistance
2.6
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
Copyright
© 2011, Texas Instruments Incorporated
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