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參數(shù)資料
| 型號(hào)： | SP8537 |
| 英文描述： | Micropower Sampling 10-Bit A/D Converter |
| 中文描述： | 微采樣10位A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 220K |
| 代理商： | SP8537 |
5
SP8537DS/03
SP8537 Micropower Sampling 10–Bit Voltage A/D Converter
Copyright 2000 Sipex Corporation
The device uses a capacitive DAC architecture
which provides the sampling behavior. This
results in full Nyquist performance at the fastest
throughput rate (29.5 KHz) the device is capable of.
The power supply voltage is variable from 3.0V
to 5.5V which provides supply flexibility. At the
5.0V supply level, conversion plus sampling
time is 33.9
μ
S and supply current is 250
μ
A
(1.25 mW). With a 3.3V supply the conversion
plus sampling time is 150.2
μ
S and current is
reduced to 150
μ
A (0.5 mW).
The device features automatic shutdown and
will shutdown to a +0.5
μ
A power level as CS
is brought high (de-selected). Power is
proportional to conversion duty cycle and
varies from 250
μ
A at 34
μ
S (Duty cycle =
100%) to 6.25
μ
a at 1.4 ms (Duty cycle = 2.5%).
Examples:
Conversion rate
34
μ
S
68
μ
S
136
μ
S
1.4 mS
I
CC
@ 5V
250
μ
A
125
μ
A
62.5
μ
A
6.25
μ
A
Duty Cycle
100%
50%
25%
2.5%
DESCRIPTION
The
SP8537
is a 10 bit sampling ADC with
a programmable two channel multiplexer and
serial data interface. The ADC samples and
converts 10 bits of data in 33.9
μ
S with a 5V
supply voltage applied. The
SP8537
will also
operate at a 3.3V supply at 150.2
μ
S throughput.
The device automatically shuts down to a
+0.5
μ
A (MAX) level as soon as the chip is
deselected (CS=1). Serial data output is
available in an MSB first format.
FEATURES
Two program bits, which are shifted into the
device prior to conversion, determine the input
configuration. In the single ended MUX
configuration the input signal will be applied to
either channel 0 or channel 1 and will be ground
referenced. The maximum full scale range is
VCC. In the full differential mode, the signal
will be applied between channel 0 and channel
1. The signals applied at each input may both
be dynamic. This is in contrast with pseudo
differential devices which must have input low
held at a constant level during conversion. The
converter will provide significant common mode
rejection when used in full differential manner.
Both inputs must remain between ground and
VCC for proper conversion.
MUX ADDRESSING
Mux Addressing
SGL/DIFF
0
0
1
1
Channel #
0
V
INH
V
INL
V
INL
V
INH
V
INH
V
INH
GND
Comments
ODD/SIGN
0
1
0
1
1
Full Differential Mode
Single Ended Mux Mode
INPUT VOLTAGE
(V
INH
-V
INL
)*
0 LSB
1 LSB
512 LSB
1022 LSB
1023 LSB
INPUT VOLTAGE
AT V
CC
/V
REF
= 5V
0V
0.0049V
2.5000V
4.9902V
4.9951V
OUTPUT
CODE
0000000000
0000000001
1000000000
1111111110
1111111111
* See Mux Addressing Table for a definition of V
INH
- V
INL
.
ADC TRANSFER FUNCTION
V
INL
V
INL
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP8538JN | RECTIFIER STANDARD SINGLE 1A 50V 50 30A-ifsm 5uA-ir 1.1V-vf MELF 5K/REEL |
| SP8538 | Micropower Sampling 12-Bit A/D Converter |
| SP8538AN | Micropower Sampling 12-Bit A/D Converter |
| SP8538AS | Micropower Sampling 12-Bit A/D Converter |
| SP8538BN | Micropower Sampling 12-Bit A/D Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP8538 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Micropower Sampling 12-Bit A/D Converter |
| SP8538AN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Micropower Sampling 12-Bit A/D Converter |
| SP8538AS | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Micropower Sampling 12-Bit A/D Converter |
| SP8538BN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Micropower Sampling 12-Bit A/D Converter |
| SP8538BS | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Micropower Sampling 12-Bit A/D Converter |
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