參數(shù)資料
型號: ADC16061
廠商: National Semiconductor Corporation
英文描述: Self-Calibrating 16-Bit, 2.5 MSPS, 390 mW A/D Converter(16位2.5 MSPS,390 mW可自行校對的A/D轉(zhuǎn)換器)
中文描述: 自校準(zhǔn)16位,250 MSPS的,390毫瓦的A / D轉(zhuǎn)換器(16位250 MSPS的,390毫瓦可自行校對的的A / D轉(zhuǎn)換器)
文件頁數(shù): 3/20頁
文件大小: 476K
代理商: ADC16061
Pin Descriptions and Equivalent Circuits
Pin
No.
Analog I/O
Symbol
Equivalent Circuit
Description
1
V
IN
+
Non-Inverting analog signal Input. With a 2.0V reference voltage
and a 2.0V common mode voltage, V
CM
, the input signal voltage
range is from 1.0 volt to 3.0 Volts.
Inverting analog signal Input. With a 2.0V reference voltage and a
2.0V common mode voltage, V
CM
, the input signal voltage range is
from 1.0 Volt to 3.0 Volts. The input signal should be balanced for
best performance.
Positive reference input. This pin should be bypassed to AGND
with a 0.1 μF monolithic capacitor.
V
REF
+ minus V
REF IN
should be a minimum of 1.8V and a
maximum of 2.2V. The full-scale input voltage is equal to V
REF
+
IN
minus V
REF
IN
.
Negative reference input. In most applications this pin should be
connected to AGND and the full reference voltage applied to
V
REF
+
IN
. If the application requires that V
REF
IN
be offset from
AGND, this pin should be bypassed to AGND with a 0.1 μF
monolithic capacitor. V
REF
+
IN
minus V
REF IN
should be a
minimum of 1.8V and a maximum of 2.2V. The full-scale input
voltage is equal to V
REF
+
IN
minus V
REF
IN
.
Output of the high impedance positive reference buffer. With a
2.0V reference input, and with a V
CM
of 2.0V, this pin will have a
3.0V output voltage. This pin should be bypassed to AGND with a
0.1 μF monolithic capacitor in parallel with a 10 μF capacitor.
4
V
IN
48
V
REF
+
IN
47
V
REF
IN
50
V
REF
+
OUT
49
V
REF
OUT
The output of the negative reference buffer. With a 2.0V reference
and a V
CM
of 2.0V, this pin will have a 1.0V output voltage. This
pin should be bypassed to AGND with a 0.1 μF monolithic
capacitor in parallel with a 10 μF capacitor.
52
V
REF (MID)
Output of the reference mid-point, nominally equal to 0.4 V
A
(2.0V). This pin should be bypassed to AGND with a 0.1 μF
monolithic capacitor. This voltage is derived from V
CM
.
51
V
CM
Input to the common mode buffer, nominally equal to 40% of the
supply voltage (2.0V). This pin should be bypassed to AGND with
a 0.1 μF monolithic capacitor. Best performance is obtained if this
pin is driven with a low impedance source of 2.0V.
A
www.national.com
3
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