参数资料
型号: MAX5168NCCM+T
厂商: Maxim Integrated Products
文件页数: 2/12页
文件大小: 0K
描述: IC AMP SAMPLE/HOLD 32CH 48-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,000
放大器类型: 采样和保持
电路数: 32
电流 - 输入偏压: 1µA
电压 - 输入偏移: 5000µV
电流 - 电源: 36mA
电流 - 输出 / 通道: 2mA
工作温度: 0°C ~ 70°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)
MAX5168
Input Drive Requirements
The input of the MAX5168 feeds the inputs of 32 high-
impedance buffers. These buffers are what charge the
sample/hold capacitor through the multiplexer switch
resistance. The bias current of a selected buffer is
10A, and this feeds into the 10pF input capacitance.
Figure 5 shows an equivalent input circuit. The bias cur-
rents of the other 31 sample and holds are very small in
comparison to the bias current of the selected channel.
Powering the MAX5168
The MAX5168 does not require a special power-up
sequence to avoid latchup. The device requires three
separate supply voltages for operation. However, when
one or two of the voltages are not available, DC-DC
charge-pump (switched-capacitor) converters provide
a simple, efficient solution. The MAX860 provides volt-
age doubling or inversion, ideal for conversions from
+5V to +10V or from +5V to -5V.
Chip Information
TRANSISTOR COUNT: 6961
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
10
______________________________________________________________________________________
OUT0
OUT1
OUT30
OUT31
OUT32
OUT33
OUT62
OUT63
MAX5168
CONFIG
ADDR0–ADDR4
SELECT
S/H
IN
CONFIG
ADDR0–ADDR4
SELECT
S/H
IN
A0–A4
A5
WR
INPUT
VL
Figure 4. 64-Output Sample/Hold Circuit
IBIAS
10
A, INH = LOW
CIN
10pF
Figure 5. Input Equivalent Circuit
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