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参数资料
| 型号： | LTC1282ACSW#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 19/24页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV SAMPLING W/REF24SOIC |
| 标准包装： | 32 |
| 位数： | 12 |
| 采样率（每秒）： | 140k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 24mW |
| 电压电源： | 双 ± |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，单极；1 个单端，双极 |
4
LTC1282
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
fSAMPLE(MAX)
Maximum Sampling Frequency
Commercial (Note 13)
q
140
kHz
Military (Note 13)
q
120
kHz
tCONV
Conversion Time
Commercial
q
6.0
s
Military
q
6.5
s
t1
CS to RD Setup Time
q
0ns
t2
RD
↓ to BUSY↓ Delay
CL = 50pF
140
200
ns
Commercial
q
230
ns
Military
q
260
ns
t3
Data Access Time After RD
↓
CL = 20pF (Note 13)
100
180
ns
Commercial
q
200
ns
Military
q
220
ns
CL = 100pF (Note 13)
110
200
ns
Commercial
q
240
ns
Military
q
260
ns
t4
RD Pulse Width
(Note 13)
q
t3
ns
t5
CS to RD Hold Time
(Note 13)
q
0ns
t6
Data Setup Time After BUSY
↑
(Note 13)
60
85
ns
Commercial
q
110
ns
Military
q
120
ns
t7
Bus Relinquish Time
(Note 13)
40
60
120
ns
Commercial
q
40
130
ns
Military
q
40
150
ns
t8
HBEN to RD Setup Time
(Note 13)
q
0ns
t9
HBEN to RD Hold Time
(Note 13)
q
0ns
t10
Delay Between RD Operations
q
40
ns
t11
Delay Between Conversions
Commercial (Note 13)
q
1140
450
ns
Military (Note 13)
q
1500
ns
t12
Aperture Delay of Sample-and-Hold
30
ns
TI I G CHARACTERISTICS
W U
(Note 5)
LTC1282A/LTC1282B
Note 8: Bipolar offset is the different voltage measured from – 0.5LSB
when the output code flickers between 0000 0000 0000 and 1111 1111
1111.
Note 9: Full-scale change when VSS = 0V (Unipolar Mode) or
– 3V (Bipolar Mode).
Note 10: Full-scale change when VDD = 3V.
Note 11: The LTC1282 can perform unipolar and bipolar conversions.
When VSS is grounded (i.e. – 0.1V ≤ VSS), the ADC will convert in unipolar
mode with input voltage of 0V to 2.5V. When VSS is taken negative (i.e. VSS
≤ –2.5V), the ADC will convert in bipolar mode with an input voltage of
±1.25V. AIN must not exceed VDD or fall below VSS by more than 50mV for
specified accuracy.
Note 12: Guaranteed by design, not subject to test.
Note 13: Recommended operating conditions.
Note 14: Commercial grade parts are designed to operate over the
temperature range of – 40
°C to 85°C but are neither tested nor guaranteed
beyond 0
°C to 70°C. Industrial grade parts specified and tested over
–40
°C to 85°C are available on special request. Consult factory.
The q indicates specifications which apply over the full operating
temperature range; all other limits and typicals TA = 25°C.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to ground with DGND and
AGND wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below VSS or above VDD, they
will be clamped by internal diodes. This product can handle input currents
greater than 60mA below VSS or above VDD without latchup.
Note 4: When these pin voltages are taken below VSS they will be clamped
by internal diodes. This product can handle input currents greater than
60mA below VSS without latchup. These pins are not clamped to VDD.
Note 5: VDD = 3V, VSS = 0V for unipolar mode and VSS = – 3V for bipolar
mode, fSAMPLE = 140kHz, tr = tf = 5ns unless otherwise specified.
Note 6: Linearity, offset and full-scale specifications apply for unipolar and
bipolar modes.
Note 7: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
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