参数资料
型号: MAX1162EVC16
厂商: Maxim Integrated Products
文件页数: 4/18页
文件大小: 0K
描述: EVAL KIT FOR MAX1162
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
ADC 的数量: 1
位数: 16
采样率(每秒): 200k
数据接口: 串行
输入范围: 0 ~ VREF
工作温度: 0°C ~ 70°C
已用 IC / 零件: MAX1162,MAX1062
已供物品: 2 板,CD
MAX1162
16-Bit, +5V, 200ksps ADC with 10A
Shutdown
12
______________________________________________________________________________________
quency band of interest. Minimize noise by presenting
a low impedance (at the frequencies contained in the
noise signal) at the inputs. This requires bypassing AIN
to AGND, or buffering the input with an amplifier that
has a small-signal bandwidth of several MHz, or prefer-
ably both. AIN has 4MHz (typ) of bandwidth.
Distortion
Avoid degrading dynamic performance by choosing an
amplifier with distortion much less than the MAX1162’s
total harmonic distortion (THD = -102dB at 1kHz) at fre-
quencies of interest. If the chosen amplifier has insuffi-
cient common-mode rejection, which results in degraded
THD performance, use the inverting configuration (posi-
tive input grounded) to eliminate errors from this source.
Low temperature-coefficient, gain-setting resistors reduce
linearity errors caused by resistance changes due to self-
heating. To reduce linearity errors due to finite amplifier
gain, use amplifier circuits with sufficient loop gain at the
frequencies of interest.
DC Accuracy
To improve DC accuracy, choose a buffer with an offset
much less than the MAX1162’s offset (1mV (max) for +5V
supply), or whose offset can be trimmed while maintain-
ing stability over the required temperature range.
Serial Interfaces
The MAX1162’s interface is fully compatible with SPI,
QSPI, and MICROWIRE standard serial interfaces.
If a serial interface is available, establish the CPU’s ser-
ial interface as master, so that the CPU generates the
serial clock for the MAX1162. Select a clock frequency
between 100kHz and 4.8MHz:
1) Use a general-purpose I/O line on the CPU to pull
CS low.
2) Activate SCLK for a minimum of 24 clock cycles.
The serial data stream of eight leading zeros fol-
lowed by the MSB of the conversion result begins at
the falling edge of CS. DOUT transitions on SCLK’s
falling edge and the output is available in MSB-first
A0
A1
CLK
CHANGE MUX INPUT HERE
CONVERSION
IN1
A0
A1
IN2
IN3
IN4
OUT
ACQUISITION
4-TO-1
MUX
AIN
CS
MAX1162
CS
TIMING NOT TO SCALE.
Figure 9. Change Multiplexer Input Near Beginning of Conversion to Allow Time for Slewing and Settling
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