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参数资料
| 型号： | AD7666ASTZRL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT UNIPOLAR 48LQFP |
| 标准包装： | 2,000 |
| 系列： | PulSAR® |
| 位数： | 16 |
| 采样率（每秒）： | 500k |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 75mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个伪差分，单极 |
| 配用： | EVAL-AD7666CBZ-ND - BOARD EVALUATION FOR AD7666 |
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AD7666
Rev. 0 | Page 22 of 28
DIGITAL INTERFACE
The AD7666 has a versatile digital interface; it can be interfaced
with the host system by using either a serial or a parallel
interface. The serial interface is multiplexed on the parallel data
bus. The AD7666 digital interface also accommodates both 3 V
and 5 V logic by simply connecting the OVDD supply pin of the
AD7666 to the host system interface digital supply. Finally, by
using the OB/2C input pin, both twos complement or straight
binary coding can be used.
The two signals, CS and RD, control the interface. CS and RD
have a similar effect because they are OR’d together internally.
When at least one of these signals is HIGH, the interface
outputs are in high impedance. Usually CS allows the selection
of each AD7666 in multicircuit applications and is held low in a
single AD7666 design. RD is generally used to enable the
conversion result on the data bus.
PARALLEL INTERFACE
The AD7666 is configured to use the parallel interface when
SER/PAR is held LOW. The data can be read either after each
conversion, which is during the next acquisition phase, or
during the following conversion, as shown in Figure 36 and
Figure 37, respectively. When the data is read during the
conversion, however, it is recommended that it is read only
during the first half of the conversion phase. This avoids any
potential feedthrough between voltage transients on the digital
interface and the most critical analog conversion circuitry.
The BYTESWAP pin allows a glueless interface to an 8-bit bus.
As shown in Figure 38, the LSB byte is output on D[7:0] and the
MSB is output on D[15:8] when BYTESWAP is LOW. When
BYTESWAP is HIGH, the LSB and MSB bytes are swapped and
the LSB is output on D[15:8] and the MSB is output on D[7:0].
By connecting BYTESWAP to an address line, the 16-bit data
can be read in two bytes on either D[15:8] or D[7:0].
SERIAL INTERFACE
The AD7666 is configured to use the serial interface when
SER/PAR is held HIGH. The AD7666 outputs 16 bits of data,
MSB first, on the SDOUT pin. This data is synchronized with
the 16 clock pulses provided on the SCLK pin. The output data
is valid on both the rising and falling edges of the data clock.
CURRENT
CONVERSION
BUSY
DATA
BUS
t12
t13
03033-
0-
029
RD
CS
Figure 36. Slave Parallel Data Timing for Reading (Read after Convert)
PREVIOUS
CONVERSION
t1
t3
t12
t13
t4
BUSY
DATA
BUS
03033-
0-
030
CNVST,
RD
CS = 0
Figure 37. Slave Parallel Data Timing for Reading (Read during Convert)
CS
RD
BYTESWAP
PINS D[15:8]
PINS D[7:0]
HI-Z
HIGH BYTE
LOW BYTE
HIGH BYTE
HI-Z
t12
t13
03033-0-031
Figure 38. 8-Bit Parallel Interface
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7667 | 制造商:AD 制造商全称:Analog Devices 功能描述:16-Bit 1 MSPS SAR Unipolar ADC with Ref |
| AD7667ACP | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 16-bit Parallel/Serial 48-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:1MSPS, 16-BIT ADC INT REF, 2.5LSB - Bulk 制造商:Analog Devices 功能描述:16BIT ADC INT REF 7667 LFSCP-48 |
| AD7667ACPRL | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 16-bit Parallel/Serial 48-Pin LFCSP EP T/R |
| AD7667ACPZ | 功能描述:IC ADC 16BIT UNIPOLAR 48LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7667ACPZRL | 功能描述:IC ADC 16BIT UNIPOLAR 48LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
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