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| 型号： | EVAL-AD7992EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7992 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 188k |
| 数据接口： | I²C，串行 |
| 输入范围： | 0 ~ VREF |
| 在以下条件下的电源（标准）： | 7.7mW @ 188kSPS，5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 已用 IC / 零件： | AD7992 |
| 已供物品： | 板，线缆 |
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2-Channel, 12-Bit ADC with I2C-Compatible
Interface in 10-Lead MSOP
AD7992
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2005 Analog Devices, Inc. All rights reserved.
FEATURES
12-bit ADC with fast conversion time: 2 s typ
2 single-ended analog input channels
Specified for VDD of 2.7 V to 5.5 V
Low power consumption
Fast throughput rate: up to 188 kSPS
Sequencer operation
Temperature range: 40 °C to 125 °C
Automatic cycle mode
I2C-compatible serial interface supports standard, fast,
and high speed modes
Out-of-range indicator/alert function
Pin-selectable addressing via AS
2 versions allow 5 I2C addresses
Shutdown mode: 1 A max
10-lead MSOP package
GENERAL DESCRIPTION
The AD7992 is a 12-bit, low power, successive approximation
ADC with an I2C-compatible interface. The part operates from
a single 2.7 V to 5.5 V power supply and features a 2 s conver-
sion time. The part contains a 2-channel multiplexer and track-
and-hold amplifier that can handle input frequencies up to
11 MHz.
The AD7992 provides a 2-wire serial interface compatible with
I2C interfaces. The part comes in two versions, the AD7992-0
and the AD7992-1, and each version allows for at least two
different I2C addresses. The AD7992-0 supports standard and
fast I2C interface modes, and the AD7992-1 supports standard,
fast, and high speed I2C interface modes.
The AD7992 normally remains in a shutdown state while not
converting, and powers up only for conversions. The conversion
process can be controlled using the CONVST pin, by a
command mode where conversions occur across I2C write
operations, or an automatic conversion interval mode selected
through software control.
The AD7992 requires an external reference in the range of 1.2 V
to VDD. This allows the widest dynamic input range to the ADC.
On-chip limit registers can be programmed with high and low
limits for the conversion result, and an open-drain, out-of-
range indicator output (ALERT) becomes active when the
conversion result violates the programmed high or low limits.
This output can be used as an interrupt.
FUNCTIONAL BLOCK DIAGRAM
CONTROL
LOGIC
AD7992
VDD
SCL
CONVERSION
RESULT
REGISTER
CYCLE TIMER
REGISTER
ALERT STATUS
REGISTER
SDA
GND
ALERT
03263-
0-
001
GND
CONVST
AS
VIN1
VIN2/REFIN
DATAHIGH LIMIT
REGISTER CH1
DATAHIGH LIMIT
REGISTER CH2
DATALOW LIMIT
REGISTER CH2
DATALOW LIMIT
REGISTER CH1
HYSTERESIS
REGISTER CH1
HYSTERESIS
REGISTER CH0
I/P
MUX
T/H
I2C INTERFACE
CONFIGURATION
REGISTER
12-BIT SUCCESSIVE
APPROXIMATION
ADC
VIN2/REFIN
SOFTWARE
CONTROL
Figure 1.
PRODUCT HIGHLIGHTS
1.
2 s conversion time and low power consumption.
2.
I2C-compatible serial interface with pin-selectable
addresses. Two AD7992 versions allow five AD7992
devices to be connected to the same serial bus.
3.
The part features automatic shutdown while not converting
to maximize power efficiency. Current consumption is
1 A max when in shutdown mode at 3 V.
4.
Reference can be driven up to the power supply.
5.
Out-of-range indicator that can be software disabled or
enabled.
6.
One-shot and automatic conversion rates.
7.
Registers store minimum and maximum conversion
results.
Table 1. Related Products
Part Number
No. of Bits
No. of Channels
Package
12
8
20-TSSOP
12
4
16-TSSOP
10
8
20-TSSOP
10
4
16-TSSOP
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-AD7993CB | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD. - Bulk |
| EVAL-AD7993CBZ | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD. - Bulk |
| EVAL-AD7993EBZ | 功能描述:BOARD EVAL FOR AD7993 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| EVAL-AD7994CB | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD. - Bulk |
| EVAL-AD7994CBZ | 制造商:Analog Devices 功能描述:EVALUATION CONTROL BOARD. - Bulk |
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