- 您现在的位置：买卖IC网 > PDF目录9893 > MAX1293ACEG+T (Maxim Integrated Products)IC ADC 12BIT 250KSPS 24-QSOP PDF资料下载
参数资料
| 型号： | MAX1293ACEG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 250KSPS 24-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 12 |
| 采样率（每秒）： | 250k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 762mW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 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 个伪差分，单极；2 个伪差分，双极 |
MAX1291/MAX1293
250ksps, +3V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
______________________________________________________________________________________
15
Table 4. Channel Selection for Pseudo-Differential Operation (SGL/DIF = 0)
*Channels CH4–CH7 apply to MAX1291 only.
A1
CH0
0
+
0
-
0
A0
0
-
1
CH2
CH4*
+
0
1
0
+
-
CH3
0
CH1
CH7*
CH6*
1
CH5*
1
-
+
0
A2
+
-
1
0
1
-
+
1
0
-
1
+
1
+
-
Applications Information
Power-On Reset
When power is first applied, internal power-on reset cir-
cuitry activates the MAX1291/MAX1293 in external
clock mode and sets INT high. After the power supplies
stabilize, the internal reset time is 10s, and no conver-
sions should be attempted during this phase. When
using the internal reference, 500s is required for VREF
to stabilize.
Internal and External Reference
The MAX1291/MAX1293 can be used with an internal
or external reference voltage. An external reference
can be connected directly to REF or REFADJ.
An internal buffer is designed to provide +2.5V at REF for
the both the MAX1291 and the MAX1293. The internally
trimmed +1.22V reference is buffered with a +2.05V/V
gain.
Internal Reference
With the internal reference, the full-scale range is +2.5V
with unipolar inputs and ±1.25V with bipolar inputs. The
internal reference buffer allows for small adjustments
(±100mV) in the reference voltage. See Figure 7.
Note that the reference buffer must be compensated
with an external capacitor (4.7F min) connected
between REF and GND to reduce reference noise and
switching spikes from the ADC. To further minimize
noise on the reference, connect a 0.01F capacitor
between REFADJ and GND.
External Reference
With both the MAX1291 and MAX1293, an external ref-
erence can be placed at either the input (REFADJ) or
the output (REF) of the internal reference buffer amplifier.
Using the REFADJ input makes buffering the external
reference unnecessary. The REFADJ input impedance
is typically 17k
.
Table 5. Data-Bus Output (8 + 4 Parallel
Interface)
+3V
330k
50k
GND
50k
0.01
F
4.7
F
REFADJ
REF
MAX1291
MAX1293
Figure 7. Reference Voltage Adjustment with External
Potentiometer
D0
PIN
BIT 0 (LSB)
HBEN = 0
BIT 8
HBEN = 1
BIT 1
BIT 9
D1
BIT 2
BIT 10
BIT 3
BIT 11 (MSB)
D3
D2
BIT 5
BIT 11
D5
BIT 6
BIT 11
BIT 7
BIT 11
D7
D6
BIT 4
BIT 11
D4
0
BIPOLAR
(UNI/BIP = 0)
UNIPOLAR
(UNI/BIP = 1)
相关PDF资料 |
PDF描述 |
|---|---|
| ISL32273EFVZ | IC RCVR RS485/422 QD ESD 16TSSOP |
| MAX184BCWG+T | IC ADC 12BIT HS 24-SOIC |
| ISL32179EFRZ | IC XMITTER ESD RS422 LP 24-QFN |
| MAX1264ACEG+T | IC ADC 12BIT 400KSPS 24-QSOP |
| IDT72T36115L6-7BB | IC FIFO 131KX36 6-7NS 240BGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1293AEEG | 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 |
| MAX1293AEEG+ | 功能描述:模数转换器 - ADC 12-Bit 4Ch 250ksps 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 |
| MAX1293AEEG+T | 功能描述:模数转换器 - ADC 12-Bit 4Ch 250ksps 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 |
| MAX1293AEEG-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 |
| MAX1293BCEG | 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 |
发布紧急采购，3分钟左右您将得到回复。