參數(shù)資料
型號(hào): XE8000EV120
廠商: Semtech
文件頁數(shù): 76/108頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR SX8722I070TRLF
標(biāo)準(zhǔn)包裝: 1
系列: ZoomingADC™
ADC 的數(shù)量: 1
位數(shù): 16
數(shù)據(jù)接口: I²C
工作溫度: -40°C ~ 125°C
已用 IC / 零件: SX8722
已供物品: 板,CD
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
相關(guān)產(chǎn)品: SX8722I070LFDKR-ND - IC ZOOMING ADC 10BIT 16CH 44MLPQ
SX8722I070LFCT-ND - IC ZOOMING ADC 10BIT 16CH 44MLPQ
SX8722I070LFTR-ND - IC ZOOMING ADC 10BIT 16CH 44MLPQ
其它名稱: XM8000EV120
XM8000EV120-ND
ACS - Revision 4.2
October 2008
2008 Semtech Corp.
www.semtech.com
Page 7
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
SX8722
High gain acquisition for sensor interface
(1) With external 32.768kHz Xtal connected
(2) Without external 32.768kHz Xtal connected
1.3. ZoomingADC Specifications
Unless otherwise specified: Temperature TA = +25°C, VBATT = +5V, GND = 0V, VREF = +5V, VIN = 0V, RC frequency fRC =
2MHz, sampling frequency fS = 300 kHz, Overall PGA gain GDTOT = 1, offsets GDOff2 = GDOff3 = 0. Power operation: normal
(IB_AMP_ADC[1:0] = IB_AMP_PGA[1:0] = '11'). For resolution n = 12 bits: OSR = 32 and NELCONV = 4. For resolution n = 16
bits: OSR = 512 and NELCONV = 2.
PARAMETER
COMMENTS/CONDITIONS
VALUE
UNITS
MIN
TYP
MAX
ANALOG INPUT CHARACTERISTICS
Differential Input Voltage Range
VIN = VINP -VINN
Gain = 1, OSR = 32 (Note 1)
-2.42
+2.42
V
Gain = 100, OSR = 32
-24.2
+24.2
mV
Gain = 1000, OSR = 32
-2.42
+2.42
mV
Reference Voltage Range
VREF,ADC = VREFP -VREFN
VBATT
V
PROGRAMMABLE GAIN AMPLIFIER
Total PGA Gain
GDTOT
0.5
1000
V/V
PGA1 Gain
GD1
See Table 15
1
10
V/V
PGA2 Gain
GD2
See Table 16
1
10
V/V
PGA3 Gain
GD3
Step = 1/12 V/V, See Table 47
127/12
V/V
Gain Settings Precision (each stage)
-3
+/- 0.5
+3
%
Gain Temperature Dependance Offset
+/- 5
ppm / °C
PGA2 Offset
GDoff2
Step = 0.2 V/V, See Table 46
-1
+1
V/V
PGA3 Offset
GDoff3
Step = 1.12 V/V, See Table 48
-63/12
+63/12
V/V
Offset Settings Precision
(PGA2 or PGA3)
(note 2)
-3
+/- 0.5
+3
%
Offset Temperature Dependance
+/-5
ppm / °C
Input Impedance PGA1
PGA1 Gain = 1 (Note 3)
1500
k
Ω
PGA1 Gain = 10 (Note 3)
150
k
Ω
Input Impedance PGA2 ,PGA3
Maximal gain = 1 (Note 3)
150
k
Ω
Output RMS Noise
PGA1 (Note 4)
205
μV
PGA2 (Note 5)
340
μV
PGA3 (Note 6)
365
μV
Not
Recommended
for
New
Designs
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