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| 型号： | MAX1361EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC SYSTEM MON 10BIT 4CH 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 10 |
| 采样率（每秒）： | 150k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 2mW |
| 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-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，单极；4 个单端，双极；2 个差分，单极；2 个差分，双极 |
MAX1361/MAX1362
Power Supply
The MAX1361 (2.7V to 3.6V) and MAX1362 (4.5V to
5.5V) operate from a single supply and consume 670A
(typ) at sampling rates up to 94.4ksps and 436A in
monitor mode at 150ksps. The MAX1361 features a
2.048V internal reference and the MAX1362 features a
4.096V internal reference. All devices can be config-
ured for use with an external reference from 1V to VDD.
Bypass VDD to GND using a 0.1F or greater ceramic
capacitor for best performance.
Analog Input and Track/Hold
The MAX1361/MAX1362 analog-input architecture con-
tains an analog-input multiplexer (MUX), fully differential
T/H, comparator, and a fully differential switched
capacitive digital-to-analog converter (DAC). Figure 3
shows the equivalent input circuit for the MAX1361/
MAX1362.
In single-ended mode, the analog-input MUX connects
CT/H between the analog input selected by CS[3:0] and
GND (see the
Configuration/Setup Bytes (Write Cycle)
section). In differential mode, the analog-input MUX
connects CT/H to the plus and minus analog inputs
selected by CS[3:0].
During the acquisition interval, the T/H switches are in
the track position, and CT/H charges to the analog-input
signal. At the end of the acquisition interval, the T/H
switches move to the hold position, retaining the charge
on CT/H as a stable sample of the input signal.
During the conversion, a switched capacitive DAC
adjusts to restore the comparator input voltage to 0V
within the limits of 10-bit resolution. This action requires
10 conversion clock cycles and is equivalent to trans-
ferring a charge of 11pF x (VIN+ - VIN-) from CT/H to the
binary-weighted capacitive DAC, forming a digital rep-
resentation of the analog-input signal.
Use a low source impedance to ensure an accurate
sample. A source impedance of up to 1.5k
Ω does not
significantly degrade sampling accuracy. For larger
source impedances, connect a 100pF capacitor from
the analog input to GND or buffer the input.
In internal clock mode, the T/H circuitry enters track
mode on the eighth rising clock edge of the address
byte (see the
Slave Address section). The T/H circuitry
enters hold mode on the falling clock edge of the
acknowledge bit of the address byte (the ninth clock
pulse). The conversions are then internally clocked, dur-
ing which time the MAX1361/MAX1362 hold SCL low.
In external clock mode, the T/H circuitry enters track
mode after a valid address on the rising edge of the
clock during the read bit (R/W = 1, bit 8). Hold mode is
entered on the rising edge of the second clock pulse
during the shifting out of the 1st byte of the result. The
next 10 clock cycles perform the conversions (see
Figure 13).
The time required for the T/H circuitry to acquire an
input signal is a function of the input sample capaci-
tance. If the analog-input source impedance is high,
the acquisition-time constant lengthens and more time
must be allowed between conversions. The acquisition
time (tACQ) is the minimum time needed for the signal
to be acquired. It is calculated by:
tACQ
≥ 7 x (RSOURCE + RIN) x CIN
4-Channel, 10-Bit, System Monitor with Programmable
Trip Window and SMBus Alert Response
10
______________________________________________________________________________________
TRACK
HOLD
CT/H
TRACK
HOLD
AIN0
AIN1
AIN2
AIN3/REF
ANALOG INPUT MUX
CAPACITIVE
DAC
REF
CAPACITIVE
DAC
REF
MAX1361
MAX1362
HOLD
TRACK
HOLD
VDD/2
Figure 3. Equivalent Input Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1361LEUB+T | 制造商:Maxim Integrated Products 功能描述:ADC SGL SAR 150KSPS 10-BIT SERL 10PIN UMAX - Tape and Reel |
| MAX1361MEUB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1361MEUB+ | 功能描述:模数转换器 - ADC 10-Bit 4Ch 150ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1361MEUB+T | 功能描述:模数转换器 - ADC 10-Bit 4Ch 150ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1361MEUB-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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