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参数资料
| 型号： | MAX1309ECM |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | Metal Dust Cap; For Use With:Amphenol PCD FW Field TV Square Flange Receptacles; Body Plating:Olive Drab Cadmium RoHS Compliant: Yes |
| 中文描述： | 4-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC, TQFP-48 |
| 文件页数： | 20/36页 |
| 文件大小： | 487K |
| 代理商： | MAX1309ECM |
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M
8-/4-/2-Channel,12-Bit,Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
20
______________________________________________________________________________________
Data Throughput
The data throughput (f
TH
) of the MAX1304–MAX1306/
MAX1308–MAX1310/MAX1312–MAX1314 is a function
of the clock speed (f
CLK
). In internal clock mode, f
CLK
=
15MHz (typ). In external clock mode, 100kHz
≤
f
CLK
≤
20MHz. When reading during conversion (Figures 7 and
8), calculate f
TH
as follows:
where N is the number of active channels and t
QUIET
is
the period of bus inactivity before the rising edge of
CONVST. See the
Starting a Conversion
section for
more information.
Table 1 uses the above equation and shows the total
throughput as a function of the number of channels
selected for conversion.
Clock Modes
The MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–
MAX1314 provide a 15MHz internal conversion clock.
Alternatively, an external clock can be used.
Internal Clock
Internal clock mode frees the microprocessor from the
burden of running the ADC conversion clock. For inter-
nal clock operation, connect INTCLK/
EXTCLK
to AV
DD
and connect CLK to DGND. Note that INTCLK/
EXTCLK
is referenced to AV
DD
, not DV
DD
.
External Clock
For external clock operation, connect INTCLK/
EXTCLK
to AGND and connect an external clock source to CLK.
Note that INTCLK/
EXTCLK
is referenced to AV
DD
, not
DV
DD
. The external clock frequency can be up to
20MHz. Linearity is not guaranteed with clock frequen-
cies below 100kHz due to droop in the T/H circuits.
f
t
t
x N
f
CLK
TH
ACQ
QUIET
=
+
+
+
+
1
12
3
1
1
(
)
Table 1. Throughput vs. Channels Sampled: f
CLK
= 15MHz, t
ACQ
= 100ns, t
QUIET
= 50ns
CHANNELS
SAMPLED
(N)
CLOCK CYCLES
UNTIL
LAST RESULT
CLOCK CYCLE
FOR READING
LAST CONVERSION
TOTAL
CONVERSION
TIME (ns)
TOTAL
THROUGHPUT
(ksps)
THROUGHPUT
PER CHANNEL
(f
TH
)
1
2
3
4
5
6
7
8
12
15
18
21
24
27
30
33
1
1
1
1
1
1
1
1
800
1000
1200
1400
1600
1800
2000
2200
983
1643
2117
2474
2752
2975
3157
3310
983
821
705
618
550
495
451
413
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1313ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1314ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1310ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1312ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
| MAX1305ECM | 8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs with 【10V, 【5V, and 0 to +5V Analog Input Ranges |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1309ECM/V+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM/V+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 1.075Msps 3V 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 |
| MAX1309ECM-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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