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參數(shù)資料
| 型號： | DC682A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 18/20頁 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC1859 |
| 軟件下載： | QuikEval System |
| 設計資源： | DC682A Design File DC682A Schematic |
| 標準包裝： | 1 |
| 系列： | QuikEval™, SoftSpan™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC1859 |
| 已供物品： | 板 |
| 相關產(chǎn)品： | LTC1859CG#PBF-ND - IC ADC 8CH 16BIT 100KSPS 28-SSOP LTC1859IG#PBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP LTC1859IG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP LTC1859CG#TRPBF-ND - IC A/D CONV 8CH 16BIT 28-SSOP |
LTC1857/LTC1858/LTC1859
7
185789fa
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1859 Power Supply
Feedthrough vs Ripple Frequency
Supply Current vs Supply Voltage
Supply Current vs Temperature
COM (Pin 1): Common Input. This is the reference point
for all single-ended inputs. It must be free of noise and is
usually connected to the analog ground plane.
CH0 (Pin 2): Analog MUX Input.
CH1 (Pin 3): Analog MUX Input.
CH2 (Pin 4): Analog MUX Input.
CH3 (Pin 5): Analog MUX Input.
CH4 (Pin 6): Analog MUX Input.
CH5 (Pin 7): Analog MUX Input.
CH6 (Pin 8): Analog MUX Input.
CH7 (Pin 9): Analog MUX Input.
MUXOUT+ (Pin10):PositiveMUXOutput.Outputoftheana-
log multiplexer. Connect to ADC+ for normal operation.
MUXOUT–(Pin11):NegativeMUXOutput.Outputoftheana-
log multiplexer. Connect to ADC– for normal operation.
ADC+ (Pin 12): Positive Analog Input to the Analog-to-
Digital Converter.
ADC– (Pin 13): Negative Analog Input to the Analog-to-
Digital Converter.
AGND1 (Pin 14): Analog Ground.
VREF (Pin 15): 2.5V Reference Output. Bypass to analog
ground with a 1μF tantalum capacitor.
REFCOMP (Pin 16): Reference Buffer Output. Bypass to
analog ground with a 10μF tantalum and a 0.1μF ceramic
capacitor. Nominal output voltage is 4.096V.
AGND2 (Pin 17): Analog Ground.
AGND3 (Pin 18): Analog Ground. This is the substrate
connection.
AVDD (Pin 19): 5V Analog Supply. Bypass to analog ground
with a 0.1μF ceramic and a 10μF tantalum capacitor.
DVDD (Pin 20): 5V Digital Supply. Bypass to digital ground
with a 0.1μF ceramic and a 10μF tantalum capacitor.
OVDD (Pin 21): Positive Supply for the Digital Output
Buffers (3V to 5V). Bypass to digital ground with a 0.1μF
ceramic and a 10μF tantalum capacitor.
BUSY (Pin 22): Output shows converter status. It is low
when a conversion is in progress.
SDO (Pin 23): Serial Data Output.
PIN FUNCTIONS
RIPPLE FREQUENCY (Hz)
–60
POWER
SUPPLY
FEEDTHROUGH
(dB)
–40
–20
–10
100
10k
100k
1M
1859 G10
–80
1k
–30
–50
–70
fSAMPLE = 100kHz
VRIPPLE = 60mV
SUPPLY VOLTAGE (V)
4.5
SUPPLY
CURRENT
(mA)
8.0
8.5
5.5
1859 G11
7.5
7.0
4.75
5
5.25
9.0
fSAMPLE = 100kHz
TEMPERATURE (°C)
–50
7.0
POSITIVE
SUPPLY
CURRENT
(mA)
7.5
8.0
8.5
9.0
–25
0
25
50
1859 G12
75
100
fSAMPLE = 100kHz
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