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参数资料
| 型号： | DC575A |
| 厂商： | Linear Technology |
| 文件页数： | 2/48页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2410 |
| 软件下载： | QuikEval System |
| 设计资源： | DC575A Design File DC575A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 2 |
| 位数： | 24 |
| 采样率（每秒）： | 7.5 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2410 |
| 已供物品： | 板 |
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LTC2410
10
GND (Pins 1, 7, 8, 9, 10, 15, 16): Ground. Multiple ground
pins internally connected for optimum ground current flow
and VCC decoupling. Connect each one of these pins to a
ground plane through a low impedance connection. All seven
pins must be connected to ground for proper operation.
VCC (Pin 2): Positive Supply Voltage. Bypass to GND
(Pin 1) with a 10
F tantalum capacitor in parallel with
0.1
F ceramic capacitor as close to the part as possible.
REF+ (Pin 3), REF– (Pin 4): Differential Reference Input.
The voltage on these pins can have any value between GND
and VCC as long as the reference positive input, REF+, is
maintained more positive than the reference negative
input, REF –, by at least 0.1V.
IN+ (Pin 5), IN– (Pin 6): Differential Analog Input. The
voltage on these pins can have any value between
GND – 0.3V and VCC + 0.3V. Within these limits the
converter bipolar input range (VIN = IN+ – IN–) extends
from – 0.5 (VREF) to 0.5 (VREF). Outside this input range
the converter produces unique overrange and underrange
output codes.
CS (Pin 11): Active LOW Digital Input. A LOW on this pin
enables the SDO digital output and wakes up the ADC.
Following each conversion the ADC automatically enters
the Sleep mode and remains in this low power state as
long as CS is HIGH. A LOW-to-HIGH transition on CS
during the Data Output transfer aborts the data transfer
and starts a new conversion.
SDO (Pin 12): Three-State Digital Output. During the Data
Output period, this pin is used as serial data output. When
the chip select CS is HIGH (CS = VCC) the SDO pin is in a
high impedance state. During the Conversion and Sleep
periods, this pin is used as the conversion status output.
The conversion status can be observed by pulling CS LOW.
SCK (Pin 13): Bidirectional Digital Clock Pin. In Internal
Serial Clock Operation mode, SCK is used as digital output
for the internal serial interface clock during the Data
Output period. In External Serial Clock Operation mode,
SCK is used as digital input for the external serial interface
clock during the Data Output period. A weak internal pull-
up is automatically activated in Internal Serial Clock Op-
eration mode. The Serial Clock Operation mode is deter-
mined by the logic level applied to the SCK pin at power up
or during the most recent falling edge of CS.
FO (Pin 14): Frequency Control Pin. Digital input that
controls the ADC’s notch frequencies and conversion
time. When the FO pin is connected to VCC (FO = VCC), the
converter uses its internal oscillator and the digital filter
first null is located at 50Hz. When the FO pin is connected
to GND (FO = OV), the converter uses its internal oscillator
and the digital filter first null is located at 60Hz. When FO
is driven by an external clock signal with a frequency fEOSC,
the converter uses this signal as its system clock and the
digital filter first null is located at a frequency fEOSC/2560.
PI FU CTIO S
UU
U
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TEMPERATURE (
°C)
SUPPLY
CURRENT
(
A)
2410 G39
23
22
21
20
19
18
17
16
–45 –30 –15
0
15
30
45
60
75
90
FO = GND
CS = VCC
SCK = NC
SDO = NC
VCC = 5.5V
VCC = 2.7V
VCC = 4.1V
Sleep Current vs Temperature (TA)
OUTPUT DATA RATE (READINGS/SEC)
SUPPLY
CURRENT
(
A)
2410 G38
1100
1000
900
800
700
600
500
400
300
200
100
010 20 30 40 50 60 70 80 90 100
VCC = 5V
REF+ = 5V
REF– = GND
IN+ = GND
IN– = GND
TA = 25°C
FO = EXTERNAL OSC
CS = GND
SCK = NC
SDO = NC
TEMPERATURE (
°C)
SUPPLY
CURRENT
(
A)
2410 G37
220
210
200
190
180
170
160
–45 –30 –15
0
15
30
45
60
75
90
FO = GND
CS = GND
SCK = NC
SDO = NC
VCC = 5.5V
VCC = 4.1V
VCC = 2.7V
Conversion Current vs
Output Data Rate
Conversion Current vs
Temperature (TA)
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