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参数资料
| 型号： | MAX1192ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/27页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 22MSPS DL 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 8 |
| 采样率（每秒）： | 22M |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 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： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，双极；2 个差分，双极 |
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MAX1192
Ultra-Low-Power, 22Msps, Dual 8-Bit ADC
______________________________________________________________________________________
21
Using Transformer Coupling
An RF transformer (Figure 8) provides an excellent
solution to convert a single-ended source signal to a
fully differential signal, required by the MAX1192 for
optimum performance. Connecting the center tap of the
transformer to COM provides a VDD/2 DC level shift to
the input. Although a 1:1 transformer is shown, a step-
up transformer can be selected to reduce the drive
requirements. A reduced signal swing from the input
driver, such as an op amp, can also improve the overall
distortion.
In general, the MAX1192 provides better SFDR and
THD with fully differential input signals than single-
ended drive, especially for high input frequencies. In
differential input mode, even-order harmonics are lower
as both inputs (INA+, INA- and/or INB+, INB-) are bal-
anced, and each of the ADC inputs only requires half
the signal swing compared to single-ended mode.
Single-Ended AC-Coupled Input Signal
Figure 9 shows an AC-coupled, single-ended applica-
tion. Amplifiers such as the MAX4108 provide high
speed, high bandwidth, low noise, and low distortion to
maintain the input signal integrity.
Buffered External Reference Drives
Multiple ADCs
The buffered external reference mode allows for more
control over the MAX1192 reference voltage and allows
multiple converters to use a common reference. To
drive one MAX1192 in buffered external reference
mode, the external circuit must sink 0.7A, allowing one
reference circuit to easily drive the REFIN of multiple
converters to 1.024V ±10%.
MAX1192
T1
N.C.
VIN
6
1
5
2
4
3
22pF
0.1
μF
0.1
μF
2.2
μF
25
Ω
25
Ω
MINICIRCUITS
TT1-6-KK81
T1
N.C.
VIN
6
1
5
2
4
3
22pF
0.1
μF
0.1
μF
2.2
μF
25
Ω
25
Ω
MINICIRCUITS
TT1-6-KK81
INA-
INA+
INB-
INB+
COM
Figure 8. Transformer-Coupled Input Drive
MAX1192
0.1
μF
1k
Ω
1k
Ω
100
Ω
100
Ω
CIN
22pF
CIN
22pF
INB+
INB-
COM
INA+
INA-
0.1
μF
RISO
50
Ω
RISO
50
Ω
REFP
REFN
VIN
MAX4108
0.1
μF
1k
Ω
1k
Ω
100
Ω
100
Ω
CIN
22pF
CIN
22pF
0.1
μF
RISO
50
Ω
RISO
50
Ω
REFP
REFN
VIN
MAX4108
Figure 9. Using an Op Amp for Single-Ended, AC-Coupled
Input Drive
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1193ETI | 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 |
| MAX1193ETI+ | 功能描述:模数转换器 - ADC 8-Bit 2Ch 45Msps 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 |
| MAX1193ETI+D | 制造商:Maxim Integrated Products 功能描述:ADC DUAL PIPELINED 45MSPS 8BIT PARALLEL 28TQFN - Rail/Tube |
| MAX1193ETI+T | 功能描述:模数转换器 - ADC 8-Bit 2Ch 45Msps 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 |
| MAX1193ETI+TD | 制造商:Maxim Integrated Products 功能描述:ADC DUAL PIPELINED 45MSPS 8BIT PARALLEL 28TQFN - Tape and Reel |
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