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参数资料
| 型号： | DC1444A-B |
| 厂商： | Linear Technology |
| 文件页数： | 21/26页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2305 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1444A Design File DC1444A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 2 |
| 位数： | 12 |
| 采样率（每秒）： | 14k |
| 数据接口： | I²C，串行 |
| 在以下条件下的电源（标准）： | 1.5mW @ 1kSPS |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2305 |
| 已供物品： | 板 |
| 相关产品： | LTC2305IMS#TRPBF-ND - IC ADC 12-BIT 2CHN 12-MSOP LTC2305IDE#TRPBF-ND - IC ADC 12-BIT 2CHN 12-DFN LTC2305IDE#PBF-ND - IC ADC 12-BIT 2CHN 12-DFN LTC2305HMS#TRPBF-ND - IC ADC 12-BIT 2CHN 12-MSOP LTC2305HMS#PBF-ND - IC ADC 12-BIT 2CHN 12-MSOP LTC2305CMS#TRPBF-ND - IC ADC 12-BIT 2CHN 12-MSOP LTC2305CMS#PBF-ND - IC ADC 12-BIT 2CHN 12-MSOP LTC2305CDE#TRPBF-ND - IC ADC 12-BIT 2CHN 12-DFN LTC2305CDE#PBF-ND - IC ADC 12-BIT 2CHN 12-DFN LTC2305IMS#PBF-ND - IC ADC 12BIT I2C 12-MSOP |
LTC2301/LTC2305
4
23015fb
DYNAMIC ACCURACY
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SINAD
Signal-to-(Noise + Distortion) Ratio
fIN = 1kHz
l
71
73.4
dB
SNR
Signal-to-Noise Ratio
fIN = 1kHz
l
71
73.5
dB
THD
Total Harmonic Distortion
fIN = 1kHz
l
–91
–77
dB
SFDR
Spurious Free Dynamic Range
fIN = 1kHz, First 5 Harmonics
l
79
92
dB
Channel-to-Channel Isolation
fIN = 1kHz
–109
dB
Full Linear Bandwidth
fIN = 1kHz
700
kHz
–3dB Input Linear Bandwidth
(Note 10)
25
MHz
Aperture Delay
13
ns
Transient Response
Full-Scale Step
240
ns
The
l denotes the specications which apply over the full operating temperature range,
otherwise specications are at TA = 25°C and AIN = –1dBFS. (Notes 4,9)
INTERNAL REFERENCE CHARACTERISTICS
The
l denotes the specications which apply over the full operating temperature range, otherwise specications are at TA = 25°C. (Notes 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF Output Voltage
IOUT = 0
l
2.46
2.50
2.54
V
VREF Output Tempco
IOUT = 0
±25
ppm/°C
VREF Output Impedance
–0.1mA ≤ IOUT ≤ 0.1mA
8
kΩ
VREFCOMP Output Voltage
IOUT = 0
4.096
V
VREF Line Regulation
VDD = 4.75V to 5.25V
0.8
mV/V
I2C INPUTS AND DIGITAL OUTPUTS
The
l denotes the specications which apply over the full operating temperature range, otherwise specications are at TA = 25°C. (Notes 4)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
l
2.85
V
VIL
Low Level Input Voltage
l
1.5
V
VIHA
High Level Input Voltage for Address Pins A1, A0
l
4.75
V
VILA
Low Level Input Voltage for Address Pins A1, A0
l
0.25
V
RINH
Resistance from A1, A0 to VDD to Set Chip
Address Bit to 1
l
10
kΩ
RINL
Resistance from A1, A0 to GND to Set Chip
Address Bit to 0
l
10
kΩ
RINF
Resistance from A1, A0 to GND or VDD to Set
Chip Address Bit to Float
l
2MΩ
II
Digital Input Current
VIN = VDD
l
–10
10
μA
VHYS
Hysteresis of Schmitt Trigger Inputs
(Note 8)
l
0.25
V
VOL
Low Level Output Voltage (SDA)
I = 3mA
l
0.4
V
tOF
Output Fall Time VIN(MIN) to VIL(MAX)
Bus Load CB 10pF to 400pF (Note 11)
l
20 + 0.1CB
250
ns
tSP
Input Spike Suppression
l
50
ns
CCAX
External Capacitance Load on Chip Address Pins
(A1, A0) for Valid Float
l
10
pF
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