參數(shù)資料
型號(hào): LTC2308CUF#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 18/20頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT 500KSPS 24-QFN
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 12
采樣率(每秒): 500k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 17.5mW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 24-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 8 個(gè)單端,單極;8 個(gè)單端,雙極;4 個(gè)差分,單極;4 個(gè)差分,雙極
配用: DC1186A-ND - BOARD SAR ADC LTC2308
LTC2308
7
2308fb
TEMPERATURE (°C)
–50
–25
0
SLEEP
CURRENT
(μA)
4
10
0
50
75
3208 G10
2
8
6
25
100
125
TEMPERATURE (°C)
–50
–25
0
LEAKAGE
CURRENT
(nA)
400
1000
0
50
75
3208 G11
200
800
600
25
100
125
CH (ON)
CH (OFF)
fSMPL = 0ksps
TEMPERATURE (°C)
–50
0
OFFSET
(LSB)
0.5
1.0
1.5
–25
0
25
50
2308 G12
75
100
125
EXTERNAL REFERENCE
BIPOLAR
UNIPOLAR
TEMPERATURE (°C)
–50
–25
–6
FULL-SCALE
ERROR
(LSB)
–2
4
0
50
75
2308 G13
–4
2
0
25
100
125
EXTERNAL REFERENCE
BIPOLAR
UNIPOLAR
TYPICAL PERFORMANCE CHARACTERISTICS
Sleep Current vs Temperature
Analog Input Leakage Current vs
Temperature
Offset vs Temperature
Full-Scale Error vs Temperature
TA = 25°C, AVDD = DVDD = OVDD = 5V,
fSMPL = 500ksps, Internal Reference, unless otherwise noted.
PIN FUNCTIONS
CH3-CH7 (Pins 1, 2, 3, 4, 5): Channel 3 to Channel 7
Analog Inputs. CH3-CH7 can be congured as single-
ended or differential input channels. See the Analog Input
Multiplexer section.
COM (Pin 6): Common Input. This is the reference point
for all single-ended inputs. It must be free of noise and
connected to ground for unipolar conversions and midway
between GND and REFCOMP for bipolar conversions.
VREF (Pin 7): 2.5V Reference Output. Bypass to GND with
a minimum 2.2μF tantalum capacitor or low ESR ceramic
capacitor. The internal reference may be over driven by an
external 2.5V reference at this pin.
REFCOMP (Pin 8): Reference Buffer Output. Bypass to
GND with a 10μF tantalum and 0.1μF ceramic capacitor
in parallel. Nominal output voltage is 4.096V. The internal
reference buffer driving this pin is disabled by grounding
VREF, allowing REFCOMP to be overdriven by an external
source (see Figure 6c).
GND (Pins 9, 10, 11, 18, 20): Ground. All GND pins must
be connected to a solid ground plane.
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