|
|
PDF AD8235 Data sheet ( Hoja de datos )
| Número de pieza | AD8235 | |
| Descripción | Micropower Instrumentation Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AD8235 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Data Sheet
40 μA Micropower Instrumentation
Amplifier in WLCSP Package
AD8235
FEATURES
Low power
40 μA maximum supply current
6 nA shutdown current
Low input currents
50 pA input bias current
25 pA input offset current
High Common Mode Rejection Ratio (CMRR)
110 dB CMRR , G = 100
Space saving
WLCSP package
Zero input crossover distortion
Versatile
Rail-to-rail input and output
Shutdown
Gain set with single resistor (G = 5 to 200)
AD8236: μSOIC package version of AD8235
APPLICATIONS
Medical instrumentation
Low-side current sense
Portable electronics
GENERAL DESCRIPTION
The AD8235 is the smallest and lowest power instrumentation
amplifier in the industry. It is available in a 1.5 mm × 2.2 mm
wafer level chip scale package (WLCSP). The AD8235 draws
a maximum quiescent current of 40 μA. In addition, it draws a
maximum 500 nA of current during shutdown mode, making
it an excellent instrumentation amplifier for battery powered,
portable applications.
The AD8235 can operate on supply voltages as low as 1.8 V. The
input stage allows for wide rail-to-rail input voltage range without
the crossover distortion, common in other designs. The rail-to-
rail output enables easy interfacing to ADCs.
The AD8235 is an excellent choice for signal conditioning. Its
low input bias current of 50 pA and high CMRR of 110 dB
(G = 100) offer tremendous value for its size and low power.
It is specified over the extended industrial temperature range of
−40°C to 125°C.
Rev. A
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
CONNECTION DIAGRAM
RG
B3
RG
RG
C3
+VS
A1
ESD
PROTECTION
ESD
PROTECTION
REF C1
ESD
PROTECTION 210kΩ
52.5kΩ
52.5kΩ
210kΩ
–VS
D1
A2 SDN
NC B2
NC D2
OP AMP
A
OP AMP
B
ESD
PROTECTION
B1 VOUT
ESD
PROTECTION
ESD
PROTECTION
A3 D3
–IN +IN
Figure 1.
AD8235
PIN CONFIGURATION
BALL A1
INDICATOR
1 23
+VS SDN –IN
A
VOUT NC
B
RG
REF
C
RG
–VS NC +IN
D
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
NC = NO CONNECT
Figure 2. 11-Ball WLCSP (CB-11-1)
5.0
4.5
4.0 G = 5
VS = 5V
3.5 VREF = 2.5V
3.0
2.5
2.0
1.5
G=5
1.0 VS = 1.8V
VREF = 0.9V
0.5
0
–0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE (V)
Figure 3. Wide Common-Mode Voltage Range vs. Output Voltage
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2009–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
AD8235
Data Sheet
Parameter
GAIN
Gain Range
Gain Error
G=5
G = 10
G = 100
G = 200
Nonlinearity
G=5
G = 10
G = 100
G = 200
Gain vs. Temperature
G=5
G > 10
INPUT
Differential Impedance
Common-Mode Impedance
Input Voltage Range
OUTPUT
Output Voltage High, VOH
Output Voltage Low, VOL
Short-Circuit Limit, ISC
REFERENCE INPUT
RIN
IIN
Voltage Range
Gain to Output
SHUTDOWN OPERATION
Shutdown current
SDN PIN INPUT VOLTAGE RANGE
VOH
VOL
POWER SUPPLY
Operating Range
Quiescent Current
Overtemperature
TEMPERATURE RANGE
For Specified Performance
Test Conditions
G = 5 + 420 kΩ/RG
VS = ±2.5 V, VREF = 0 V, VOUT = −2 V to +2 V
RL = 10 kΩ or 100 kΩ
−40°C to +125°C
−40°C to +125°C
RL = 100 kΩ
−40°C to +125°C
RL = 10 kΩ
−40°C to +125°C
RL = 100 kΩ
−40°C to +125°C
RL = 10 kΩ
−40°C to +125°C
−IN, +IN = 0 V
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
1 Although the specifications of the AD8235 list only low to midrange gains, gains can be set beyond 200.
Min
Typ Max
Unit
5
200 1
V/V
0.005
0.03
0.06
0.15
0.05
0.2
0.2
0.3
%
%
%
%
2 10
1.2 10
0.5 10
0.5 10
ppm
ppm
ppm
ppm
0.35 1.5
−50
ppm/°C
ppm/°C
440||1.6
GΩ||pF
110||6.2
GΩ||pF
0 +VS V
4.98 4.99
4.98
4.9 4.95
4.9
25
5
10 25
30
±55
V
V
V
V
mV
mV
mV
mV
mA
210 kΩ
20 nA
−VS +VS V
1 V/V
6 500 nA
1.5 µA
+VS − 0.5
−VS
+VS V
−VS + 0.5 V
1.8 5.5 V
30 40
µA
50 µA
−40
+125
°C
Rev. A | Page 4 of 20
5 Page 
AD8235
120
GAIN = 100
100
80 GAIN = 10 GAIN = 200
GAIN = 5
60
40
20
0
0.1 1 10 100 1k 10k 100k
FREQUENCY (Hz)
Figure 11. Negative PSRR vs. Frequency, RTI, VS = ±0.9 V, ±2.5 V, VREF = 0 V
120
100
80
60
40
20
0
0.1
120
GAIN = 200
GAIN = 100
GAIN = 10
GAIN = 5
1 10 100 1k 10k
FREQUENCY (Hz)
Figure 12. CMRR vs. Frequency, RTI
100k
100
80
60 GAIN = 200
GAIN = 100
40
20
GAIN = 5
GAIN = 10
0
0.1 1 10 100 1k 10k 100k
FREQUENCY (Hz)
Figure 13. CMRR vs. Frequency, 1 kΩ Source Imbalance, RTI
Data Sheet
10
5
0
–5
–10
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Figure 14. Change in CMRR vs. Temperature, G = 5, Normalized at 25°C
60
50 GAIN = 200
40
GAIN = 100
30
GAIN = 10
20
10 GAIN = 5
0
–10
–20
–30
–40
10
100 1k 10k 100k
FREQUENCY (Hz)
Figure 15. Gain vs. Frequency, VS = 1.8 V, 5 V
1M
6
5
4
3
2
1
0
1 10 100 1k 10k 100k
FREQUENCY (Hz)
Figure 16. Maximum Output Voltage vs. Frequency
Rev. A | Page 10 of 20
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet AD8235.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AD823 | Dual/ 16 MHz/ Rail-to-Rail FET Input Amplifier | Analog Devices |
| AD8230 | Precision Instrumentation Amplifier | Analog Devices |
| AD8231 | Digital Programmable Instrumentation Amplifier | Analog Devices |
| AD8232 | Heart Rate Monitor Front End | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |