参数资料
型号: MCP3208-BI/ST
元件分类: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO14
封装: 4.4 MM, PLASTIC, TSSOP-14
文件页数: 1/40页
文件大小: 722K
代理商: MCP3208-BI/ST
2008 Microchip Technology Inc.
DS21298E-page 1
MCP3204/3208
Features
12-bit resolution
± 1 LSB max DNL
± 1 LSB max INL (MCP3204/3208-B)
± 2 LSB max INL (MCP3204/3208-C)
4 (MCP3204) or 8 (MCP3208) input channels
Analog inputs programmable as single-ended or
pseudo-differential pairs
On-chip sample and hold
SPI serial interface (modes 0,0 and 1,1)
Single supply operation: 2.7V - 5.5V
100 ksps max. sampling rate at VDD = 5V
50 ksps max. sampling rate at VDD = 2.7V
Low power CMOS technology:
- 500 nA typical standby current, 2 A max.
- 400 A max. active current at 5V
Industrial temp range: -40°C to +85°C
Available in PDIP, SOIC and TSSOP packages
Applications
Sensor Interface
Process Control
Data Acquisition
Battery Operated Systems
Functional Block Diagram
Description
The Microchip Technology Inc. MCP3204/3208
devices are successive approximation 12-bit Analog-
to-Digital (A/D) Converters with on-board sample and
hold circuitry. The MCP3204 is programmable to
provide two pseudo-differential input pairs or four
single-ended inputs. The MCP3208 is programmable
to provide four pseudo-differential input pairs or eight
single-ended inputs. Differential Nonlinearity (DNL) is
specified at ±1 LSB, while Integral Nonlinearity (INL) is
offered in ±1 LSB (MCP3204/3208-B) and ±2 LSB
(MCP3204/3208-C) versions.
Communication with the devices is accomplished using
a simple serial interface compatible with the SPI
protocol. The devices are capable of conversion rates
of up to 100 ksps. The MCP3204/3208 devices operate
over a broad voltage range (2.7V - 5.5V). Low current
design permits operation with typical standby and
active
currents
of
only
500 nA
and
320 A,
respectively. The MCP3204 is offered in 14-pin PDIP,
150 mil SOIC and TSSOP packages. The MCP3208 is
offered in 16-pin PDIP and SOIC packages.
Package Types
Comparator
Sample
and
Hold
12-Bit SAR
DAC
Control Logic
CS/SHDN
VREF
VSS
VDD
CLK
DOUT
Shift
Register
CH0
Channel
Mux
Input
CH1
CH7*
* Note:
Channels 5-7 available on MCP3208 Only
DIN
VDD
CLK
DOUT
MCP3204
1
2
3
4
14
13
12
11
10
9
8
5
6
7
VREF
DIN
CH0
CH1
CH2
CH3
CS/SHDN
DGND
AGND
NC
VDD
CLK
DOUT
MC
P3
208
1
2
3
4
16
15
14
13
12
11
10
9
5
6
7
8
VREF
DIN
CS/SHDN
DGND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
NC
AGND
PDIP, SOIC, TSSOP
PDIP, SOIC
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
with SPI Serial Interface
相关PDF资料
PDF描述
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