- 您现在的位置：买卖IC网 > PDF目录383343 > MAX19706 (Maxim Integrated Products, Inc.) 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End PDF资料下载
参数资料
| 型号： | MAX19706 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| 中文描述： | 10位、22Msps、超低功耗模拟前端 |
| 文件页数： | 17/37页 |
| 文件大小： | 561K |
| 代理商： | MAX19706 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
M
10-Bit, 45Msps, Ultra-Low-Power
Analog Front-End
______________________________________________________________________________________
17
Rx ADC System Timing Requirements
Figure 3 shows the relationship between the clock, ana-
log inputs, and the resulting output data. Channel I
(CHI) and channel Q (CHQ) are sampled on the rising
edge of the clock signal (CLK) and the resulting data is
multiplexed at the D0–D9 outputs. CHI data is updated
on the rising edge and CHQ data is updated on the
falling edge of the CLK. Including the delay through the
output latch, the total clock-cycle latency is 5 clock
cycles for CHI and 5.5 clock cycles for CHQ.
Digital Input/Output Data (D0–D9)
D0–D9 are the Rx ADC digital logic outputs when the
MAX19707 is in receive mode. This bus is shared with
the Tx DAC digital logic inputs and operates in half-
duplex mode. D0–D9 are the Tx DAC digital logic inputs
when the MAX19707 is in transmit mode. The logic level
is set by OV
DD
from 1.8V to V
DD
. The digital output cod-
ing is offset binary (Table 1). Keep the capacitive load
on the digital outputs D0–D9 as low as possible (< 15pF)
to avoid large digital currents feeding back into the ana-
log portion of the MAX19707 and degrading its dynamic
performance. Buffers on the digital outputs isolate the out-
puts from heavy capacitive loads. Adding 100
resistors
in series with the digital outputs close to the MAX19707
helps improve Rx ADC and Tx DAC performance. Refer
to the MAX19707EVKIT schematic for an example of the
digital outputs driving a digital buffer through 100
series
resistors.
During SHDN, IDLE, and STBY states, D0–D9 are inter-
nally pulled up to prevent floating digital inputs. To ensure
no current flows through D0–D9 I/O, the external bus
needs to be either tri-stated or pulled up to OV
DD
and
should not be pulled to ground.
Table 1. Rx ADC Output Codes vs. Input Voltage
DIFFERENTIAL INPUT
VOLTAGE
DIFFERENTIAL INPUT (LSB)
OFFSET BINARY (D0–D9)
OUTPUT DECIMAL CODE
V
REF
x 512/512
V
REF
x 511/512
V
REF
x 1/512
V
REF
x 0/512
-V
REF
x 1/512
-V
REF
x 511/512
-V
REF
x 512/512
511 (+Full Scale - 1 LSB)
510 (+Full Scale - 2 LSB)
+1
0 (Bipolar Zero)
-1
-511 (-Full Scale +1 LSB)
-512 (-Full Scale)
11 1111 1111
11 1111 1110
10 0000 0001
10 0000 0000
01 1111 1111
00 0000 0001
00 0000 0000
1023
1022
513
512
511
1
0
Figure 2. Rx ADC Transfer Function
INPUT VOLTAGE (LSB)
-1
-510 -509
1024
V
REF
2 x V
REF
1 LSB =
V
REF
= V
REFP
- V
REFN
V
REF
V
R
V
R
0+ 1
-511
+510
+512
+511
-512
+509
(COM)
(COM)
O
00 0000 0000
00 0000 0001
00 0000 0010
00 0000 0011
11 1111 1111
11 1111 1110
11 1111 1101
01 1111 1111
10 0000 0000
10 0000 0001
相关PDF资料 |
PDF描述 |
|---|---|
| MAX19707 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX19707ETM | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX19708 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
| MAX1971EEE | Fixed-Point Digital Signal Processor 532-FCBGA |
| MAX1970-MAX1972 | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX19706ETM | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX19706ETM+ | 功能描述:ADC / DAC多通道 22Msps CODEC/AFE 1.8/2.7-3.3V RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX19706ETM+T | 功能描述:ADC / DAC多通道 22Msps CODEC/AFE 1.8/2.7-3.3V RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX19706ETM-T | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| MAX19706EVCMOD2 | 功能描述:ADC / DAC多通道 Evaluation System for the MAX19706 RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
发布紧急采购，3分钟左右您将得到回复。