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參數(shù)資料
| 型號： | DC887A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD SAR ADC LTC1408 |
| 軟件下載： | QuikEval II System |
| 設(shè)計資源： | DC887A Design File DC887A Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuikEval-II™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 600k |
| 數(shù)據(jù)接口： | 串行 |
| 輸入范圍： | ±1.25 V |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC1408 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | LTC1408CUH-ND - IC ADC 14BIT 600KSPS 32-QFN LTC1408CUH-12#TRPBF-ND - IC ADC 12BIT 600KSPS 32-QFN LTC1408IUH-12#TRPBF-ND - IC ADC 12BIT 600KSPS 32-QFN LTC1408IUH#TRPBF-ND - IC ADC 14BIT 600KSPS 32-QFN LTC1408CUH#TRPBF-ND - IC ADC 14BIT 600KSPS 32-QFN LTC1408IUH-12#PBF-ND - IC ADC 12BIT 600KSPS 32-QFN LTC1408CUH-12#PBF-ND - IC ADC 12BIT 600KSPS 32-QFN LTC1408IUH#PBF-ND - IC ADC 14BIT 600KSPS 32-QFN LTC1408CUH#PBF-ND - IC ADC 14BIT 600KSPS 32-QFN |
7
LTC1408
1408fa
UU
U
PI FU CTIO S
SDO (Pin 1): Three-State Serial Data Output. Each set of
six output data words represent the six analog input
channels at the start of the previous conversion. Data for
CH0 comes out first and data for CH5 comes out last. Each
data word comes out MSB first.
OGND (Pin 2): Ground Return for SDO Currents. This pad
must always be within 300mV of the ground plane poten-
tial.
OVDD (Pin 3): Power Supply for the SDO Pin. OVDD must
be no more than 300mV higher than VDD and can be
brought to a lower voltage to interface to low voltage logic
families. The unloaded high state at SDO is at the potential
of OVDD.
CH0+ (Pin 4): Non-Inverting Channel 0. CH0+ operates
fully differentially with respect to CH0– with a 0V to 2.5V,
or
±1.25V differential swing and a 0V to VDD absolute
input range.
CH0– (Pin 5): Inverting Channel 0. CH0– operates fully
differentially with respect to CH0+ with a –2.5V to 0V,
or
±1.25V differential swing and a 0V to VDD absolute
input range.
GND (Pins 6, 9, 12, 13, 16, 19): Analog Grounds. These
ground pins must be tied directly to the solid ground plane
under the part. Analog signal currents flow through these
connections.
CH1+ (Pin 7): Non-Inverting Channel 1. CH1+ operates
fully differentially with respect to CH1– with a 0V to 2.5V,
or
±1.25V differential swing and a 0V to VDD absolute
input range.
CH1– (Pin 8): Inverting Channel 1. CH1– operates fully
differentially with respect to CH1+ with a –2.5V to 0V,
or
±1.25V differential swing and a 0V to VDD absolute
input range.
CH2+ (Pin 10): Non-Inverting Channel 2. CH2+ operates
fully differentially with respect to CH2– with a 0V to 2.5V,
or
±1.25V differential swing and a 0V to VDD absolute
input range.
CH2– (Pin 11): Inverting Channel 2. CH2– operates fully
differentially with respect to CH2+ with a –2.5V to 0V, or
±1.25V differential swing and a 0V to VDD absolute
input range.
VDD = 3V, TA = 25°C
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TIME (ns)
–5
OUTPUT
CODE
6144
8192
10240
10
20
1408 G22
4096
2048
0
05
15
12288
14336
16384
25
CH0 THRU CH5
RISING
CH0 THRU CH5
FALLING
1408 G23
FREQUENCY (Hz)
–100
CMRR
(dB)
–60
–20
–40
–80
0
10k
100k
1M
10M 100M 1G
–120
100
1k
Simultaneous Step at all 6 Channels
from 25
Source Sampling
Frequency = 625ksps
Input Frequency = 625.0381MHz
PSRR vs Frequency
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