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AD7993 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD7993은 전자 산업 및 응용 분야에서
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부품번호 AD7993 기능
기능 4-Channel/ 12-/10-Bit ADCs with I2C Compatible Interface in 16-Lead TSSOP
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AD7993 데이터시트, 핀배열, 회로
PRELIMINARYTECHNICAL DATA
a 4-Channel,12-/10-BitADCswithI2CCompatible
Interface in 16-Lead TSSOP
Preliminary Technical Data
AD7994/AD7993
FEATURES
FUNCTIONAL BLOCK DIAGRAM
12-Bit ADC with Fast Conversion Time: 2 µs
Four Single-Ended Analog Input Channels
Specified for VDD of 2.7 V to 5.5 V
Low Power Consumption
Fast Throughput Rate:- 188 KSPS
Sequencer Operation
Automatic Cycle Mode
I2CR Compatible Serial Interface
I2CR Interface supports:
VDD
GND REFIN
AD7994/AD7993
VIN1
VIN2
VIN3
VIN4
I/P
MUX
T/H
12-/10-BIT
SUCCESSIVE
APPROXIMATION
ADC
CONVST
CONTROL
LOGIC
OSCILLATOR
Standard, Fast, and High-Speed Modes
Out of Range Indicator/Alert Function
Pin-Selectable Addressing via AS
Two Versions Allow Five I2C Addresses
Shutdown Mode: 1µA max
16-Lead TSSOP Package
DATALOW LIMIT
REGISTER CH1-CH4
DATAHIGH LIMIT
REGISTER CH1-CH4
CONVERSION
RESULT REGISTER
CONFIGURATION
REGISTER
ALERT STATUS
REGISTER
ALERT
GENERAL DESCRIPTION
The AD7994/AD7993 are 4 channel, 12-/10-bit, high
speed, low power, successive-approximation ADCs re-
spectively. They operate from a single 2.7 V to 5.5 V
AS
HYSTERESIS
REGISTER CH1-CH4
CYCLE TIMER
REGISTER
I2C INTERFACE
SCL
SDA
power supply and feature a conversion time of 2 µs. The
GND
parts contain a four channel multiplexer and track/hold
amplifier which can handle input frequencies in excess of
TBD kHz.
The AD7994/AD7993 provide a two-wire serial interface
which is compatible with I2C interfaces. The parts come
in two versions, AD7994-0/AD7993-0 to AD7994-1/
On-chip 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 programmed high or low limits are violated by the
conversion result. This output can be used as an interrupt.
AD7993-1. Each version allows for a minimum of two
different I2C addresses. The I2C interface on the AD7994-
0/AD7993-0 supports Standard and Fast I2C Interface
Modes. The I2C interface on the AD7994-1/AD7993-1
supports Standard, Fast and two High-Speed I2C Interface
Modes.
The AD7994/AD7993 normally remain in a shutdown
state while not converting, powering up only for conver-
sions. The conversion process can be controlled using the
CONVST pin, an Automatic Conversion Cycle selected
PRODUCT HIGHLIGHTS
1. 2 µs Conversion time with low power consumption.
2. I2C Compatible Serial Interface with pin selectable
addresses. Two AD7994/AD7993 versions allow five
AD7994/AD7993 devices to be connected to the same
serial bus.
3. The parts feature automatic shutdown while not convert-
ing to maximize power efficiency. Current consumption
is 1µA max when in shutdown.
through software control, or a mode where conversions
4. Reference can be driven up to the power supply.
occur across Write operations. There are no pipeline de-
lays associated with the part.
5. Out of Range Indicator which can be software disabled/
enabled.
The reference for the part is applied externally to the
REFIN pin and can be in the range of 1.2V to VDD. This
allows the widest dynamic input range to the ADC.
6. Oneshot and automatic conversion rates.
7. No Pipeline Delay
The part features a standard successive-approximation
ADC.
SMBus is a trademark and I2C is a registered trademark of Philips Corporation
REV. PrF 09/03
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2003




AD7993 pdf, 반도체, 판매, 대치품
PRELIMINARYTECHNICAL DATA
AD7993–SPECIFICATIONS1 (VDD = +2.7 V to +5.5 V, unless otherwise noted ; REFIN = 2.5 V; fSCL = 3.4 MHz unless
otherwise noted; TA = TMIN to TMAX, unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE
Signal to Noise + Distortion (SINAD)2
Signal to Noise Ratio (SNR)2
Total Harmonic Distortion (THD)2
Peak Harmonic or Spurious Noise (SFDR)2
Intermodulation Distortion (IMD)2
Second Order Terms
Third Order Terms
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
Full Power Bandwidth
DC ACCURACY
Resolution
Integral Nonlinearity2
Differential Nonlinearity2
Offset Error2
Offset Error Match2
Gain Error2
Gain Error Match2
Total Unadjusted Error (TUE)2
ANALOG INPUT
Input Voltage Ranges
DC Leakage Current
Input Capacitance
REFERENCE INPUT
REFIN Input Voltage Range
DC Leakage Current
Input Capacitance
Input Impedance
LOGIC INPUTS (SDA, SCL, CONVST)
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Capacitance, CIN2,3
Input Hysteresis, VHYST
LOGIC INPUT (CONVST)
Input High Voltage, VINH
Input Low Voltage, VINL
Input Leakage Current, IIN
Input Capacitance, CIN2,3
LOGIC OUTPUTS (OPEN DRAIN)
Output Low Voltage, VOL
Floating-State Leakage Current
Floating-State Output Capacitance2,3
Output Coding
B Version1
Units
61
TBD
-73
-74
-78
-78
10
10
TBD
TBD
TBD
dB min
dB min
dB typ
dB typ
dB typ
dB typ
ns max
ps typ
dB typ
kHz typ
kHz typ
10
±1
±0.6
±0.9
±1
±0.5
±1
±0.5
±1
Bits
LSB max
LSB typ
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
0 to REFIN
±1
30
Volts
µA max
pF typ
TBD/TBD
±1
TBD
TBD
V min/Vmax
µA max
pF max
ktyp
0.7(VDD)
0.3(VDD)
±1
10
TBD
V min
V max
µA max
pF max
V min
2.4 V min
2.0 V min
0.8 V max
0.4 V max
±1 µA max
10 pF max
0.4 V max
0.6 V max
±1 µA max
TBD
pF max
Straight (Natural) Binary
.
Test Conditions/Comments
FIN = 10kHz Sine Wave
fa = TBD kHz, fb = TBD kHz
FIN = TBD kHz
@ 3 dB
@ 0.1 dB
Guaranteed No Missed Codes to 10
Bits.
VIN = 0 V or VDD
VDD = 5V
VDD = 3 V
VDD = 5V
VDD = 3V
VIN = 0 V or VDD
ISINK = 3mA
ISINK = 6mA
–4– REV. PrF

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AD7993 전자부품, 판매, 대치품
PRELIMINARYTECHNICAL DATA
ABSOLUTE MAXIMUM RATINGS1
(TA = +25°C unless otherwise noted)
VDD to GND
Analog Input Voltage to GND
Reference Input Voltage to GND
Digital Input Voltage to GND
–0.3 V to 7 V
–0.3 V to VDD + 0.3 V
-0.3 V to VDD + 0.3 V
–0.3 V to 7 V
Digital Output Voltage to GND –0.3 V to VDD + 0.3 V
Input Current to Any Pin Except Supplies2
±10 mA
Operating Temperature Range
Commercial (B Version)
–40°C to +85°C
Storage Temperature Range
–65°C to +150°C
AD7994/AD7993
Junction Temperature
16-ld TSSOP Package
θJA Thermal Impedance
θJC Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 secs)
Infared (15 secs)
+150°C
150.4°C/W (TSSOP)
27.6°C/W (TSSOP)
+215°C
+220°C
NOTES
1Stresses above those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only and functional operation of the device
at these or any other conditions above those listed in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
2Transient currents of up to 100 mA will not cause SCR latch up.
Model1
AD7994BRU-0
AD7994BRU-1
AD7993BRU-0
AD7993BRU-1
ORDERING GUIDE
Temperature Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Linearity Error2(max) Package Option3
±1 LSB
±1 LSB
±1 LSB
±1 LSB
RU-16
RU-16
RU-16
RU-16
NOTES
1 The AD7994-0/AD7993-0 supports Standard and Fast I2C interface modes. The AD7994-1/AD7993-1 supports Standard, Fast and
Highspeed I2C Interface Modes.
2Linearity error here refers to Integral Nonlinearity
3RU = TSSOP.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7994/AD7993 features proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high energy electrostatic discharges. Therefore,
proper ESD precautions are recommended to avoid performance degradation or loss of func-
tionality.
REV. PrF
–7–

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