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参数资料
| 型号： | LTC2451CTS8 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | ADC |
| 英文描述： | 1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO8 |
| 封装： | PLASTIC, MO-193, TSOT-23, 8 PIN |
| 文件页数： | 15/16页 |
| 文件大小： | 221K |
| 代理商： | LTC2451CTS8 |
LTC2451
8
2451fd
APPLICATIONS INFORMATION
if the power supply voltage, VCC, is restored within the
operating range (2.7V to 5.5V) before the end of the POR
time interval.
Ease of Use
The LTC2451 data output has no latency, lter settling delay,
or redundant results associated with the conversion cycle.
There is a one-to-one correspondence between the conver-
sion and the output data. Therefore, multiplexing multiple
analog input voltages requires no special actions.
In the 30Hz mode, the LTC2451 performs offset calibrations
during every conversion. This calibration is transparent to
the user and has no effect upon the cyclic operation previ-
ously described. The advantage of continuous calibration
is stability of the ADC performance with respect to time
and temperature.
The LTC2451 includes a proprietary input sampling scheme
that reduces the average input current by several orders of
magnitude when compared to traditional delta-sigma ar-
chitectures. This allows external lter networks to interface
directly to the LTC2451. Since the average input sampling
current is 50nA, an external RC lowpass lter using a 1kΩ
and 0.1μF results in less than 1LSB additional error.
Reference Voltage Range
This converter accepts a truly differential external reference
voltage. The voltage range for the REF+ and REF– pins cov-
ers the entire operating range of the device (GND to VCC).
For correct converter operation, VREF+ – VREF– ≥ 2.5V.
The LTC2451 differential reference input range is 2.5V to
VCC. For the simplest operation, REF+ can be shorted to
VCC and REF– can be shorted to GND.
Input Voltage Range
Ignoring offset and full-scale errors, the converter will
theoretically output an “all zero” digital result when the
input is at VREF– (a zero scale input) and an “all one” digital
result when the input is at VREF+ (a full-scale input). In an
underrange condition, for all input voltages less than the
voltage corresponding to output code 0, the converter will
generate the output code 0. In an overrange condition,
Figure 1. State Diagram
begins outputting the conversion result under the control
of the serial clock (SCL). There is no latency in the conver-
sion result. The data output is 16 bits long and outputs
from MSB to LSB. Data is updated on the falling edges of
SCL, allowing the user to reliably latch data on the rising
edge of SCL. In Write operation, the device accepts one
conguration byte and the data is shifted in on the rising
edges of SCL. A new conversion is initiated by a Stop
condition following a valid Read or Write operation, or by
the conclusion of a complete Read cycle (all 16 bits read
out of the device).
Power-Up Sequence
When the power supply voltage, VCC, applied to the con-
verter is below approximately 2.1V, the ADC performs a
power-on reset. This feature guarantees the integrity of
the conversion result.
When VCC rises above this threshold, the converter
generates an internal power-on reset (POR) signal for
approximately 0.5ms. The POR signal clears all internal
registers. Following the POR signal, the LTC2451 starts
a conversion cycle and follows the succession of states
described in Figure 1. The rst conversion result following
POR is accurate within the specications of the device
READ/WRITE
ACKNOWLEDGE
DATA INPUT/OUTPUT
YES
2451 F01
STOP
OR READ
16 BITS
SLEEP
CONVERSION
POWER-ON RESET
NO
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相关代理商/技术参数 |
参数描述 |
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| LTC2451CTS8#PBF | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 60sps 16-bit Serial 8-Pin TSOT-23 制造商:Linear Technology 功能描述:ADC 16BIT 60SPS I2C SERIAL 制造商:Linear Technology 功能描述:ADC, 16BIT, 60SPS, I2C, SERIAL, TSOT-23-8; Resolution (Bits):16bit; Sampling Rate:60SPS; Supply Voltage Type:Single; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Supply Current:400A; Digital IC Case Style:TSOT-23; No. of Pins:8;RoHS Compliant: Yes |
| LTC2451CTS8#TRMPBF | 功能描述:IC ADC 16BIT DELTA SIG TSOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2451CTS8#TRPBF | 功能描述:IC ADC 16BIT DELTA SIG TSOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC2451IDDB#PBF | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 60sps 16-bit Serial 8-Pin DFN EP 制造商:Linear Technology 功能描述:Single Bulk 制造商:Linear Technology 功能描述:16BIT ADC DELTA SIGMA I2C 8DFN 制造商:Linear Technology 功能描述:16BIT ADC, DELTA SIGMA, I2C, 8DFN 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 60SPS, DFN-8; Resolution (Bits):16bit; Sampling Rate:60SPS; Supply Voltage Type:Single; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Supply Current:400A; Digital IC Case Style:DFN; No. of Pins:8; DNL:1LSB ;RoHS Compliant: Yes |
| LTC2451IDDB#TRMPBF | 功能描述:IC ADC 16BIT DELTA SIGMA 8DFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 位数:10 采样率（每秒）:357k 数据接口:DSP，MICROWIRE?，QSPI?，串行，SPI? 转换器数目:1 功率耗散（最大）:830µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN-EP（3x3） 包装:剪切带 (CT) 输入数目和类型:2 个单端，单极；2 个单端，双极；1 个差分，单极；1 个差分，双极 产品目录页面:1396 (CN2011-ZH PDF) 其它名称:MAX1395ETB+TCT |
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