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| 型号： | MAX2079CXE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/49页 |
| 文件大小： | 0K |
| 描述： | IC OCT ULTRASOUND RCVR 144CTBGA |
| 标准包装： | 1,000 |
| 系列： | * |
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Low-Power, High-Performance, Fully Integrated
Octal Ultrasound Receiver (Octal LNA, VGA,
AAF, ADC, and CWD Beamformer)
MAX2079
25
Maxim Integrated
Figure 4. Simplified Clock Input Schematic
Power-Down and Low-Power Mode
The device can also be powered down with the SHDN
pin. Set SHDN to +1.8V to place the device in power-
down mode. In power-down mode, the device draws a
total supply current less than 1FA from the 5V and 3.3V
supplies, and less than 0.4mA from the 1.8V supplies.
Set SHDN to logic-low for normal operation.
A low-power mode is available to lower the required
power for CWD operation. When selected, the complex
mixers operate at lower quiescent currents. Note that
operation in this mode slightly reduces the dynamic per-
formance of the device. Table 6 shows the logic function
of the standard operating modes.
In addition to power-down mode, the device can be
placed into a reduced-power Standby or Nap mode,
which allows for rapid power-up in VGA mode. Nap mode
is accessable by setting the SHDN pin to +1.8V, with the
ADC_NAP_SHDN1 and AFE_NAP_SHDN1 registers set
to 1 (see Table 6). Nap mode is not meant to be used
in conjunction with CWD mode; valid CWD power states
are normal CWD low-power and power-down modes.
Although no device damage occurs, programming the
device for Nap mode and setting the SHDN pin high can
create invalid signal outputs in CWD mode.
CLKIN+
SELECT
THRESHOLD
AVDD
10kI
20kI
5kI
50I
CLKIN-
INPUT COMMON-MODE
SELF-BIAS BLOCK
CLKIN_INTERNAL 100I
TERMINATION, PROGRAMMED: 04h[4]
DIFFERENTIAL-TO-SINGLE-ENDED
CLOCK CONVERSION
SINGLE-ENDED CLOCK
MODE: INVERTER PATH
SELECT
2:1 MUX
DIFFERENTIAL MODE: CLKIN- > SELECT THRESHOLD
SINGLE-ENDED MODE: CLKIN- < SELECT THRESHOLD
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| MAX207C/D | 功能描述:RS-232接口集成电路 +5V RS-232 Transceiver with 0.1 Micro Farads External Capacitors RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX207CAG | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX207CAG+ | 功能描述:RS-232接口集成电路 5V RS232 Transceiver w/0.1uF External Cap RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX207CAG+T | 功能描述:RS-232接口集成电路 5V RS232 Transceiver w/0.1uF External Cap RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| MAX207CAG-T | 功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
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