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AD7293 Datasheet(PDF) 6 Page - Analog Devices

Part # AD7293
Description  12-Bit Power Amplifier Current Controller
PDF  78 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7293 Datasheet(HTML) 6 Page - Analog Devices

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AD7293
Data Sheet
Rev. B | Page 6 of 78
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
INTERNAL SUPPLY MONITORING INPUTS
.
AVDD
Gain Error
±0.33
%
Offset Error
±52
mV
AVSS
Gain Error
±0.53
%
Offset Error
±14
mV
DACVDD-UNI
Gain Error
±0.16
%
Offset Error
±12
mV
DACVDD-BI
Gain Error
±0.33
%
Offset Error
±52
mV
INTERNAL REFERENCE2
Reference Output Voltage
2.495
2.5
2.505
V
At TA = 25°C only
Reference Temperature Coefficient
±10
±30
ppm/°C
EXTERNAL REFERENCE
Reference Input Voltage Range
2.48
2.5
2.52
V
DC Input Leakage Current
±2
µA
1
See the Analog-to-Digital Converter (ADC) Overview section for more details.
2
Guaranteed by design and characterization; not production tested.
3
VIN− = 0 V for specified performance.
4
VIN+ and VIN− must remain within GND and AVDD.
DAC
AVDD, DVDD, DACVDD-BI = 4.5 V to 5.5 V (connect AVDD and DACVDD-BI to the same potential), DACVDD-UNI = 5 V, AVSS = −5 V, PAVDD =
5 V, AGND = DGND = 0 V, VREFIN = 2.5 V internal or external; VDRIVE = 1.7 V to 5.5 V; TA = −40°C to +125°C, unless otherwise noted.
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
ACCURACY1
Resolution
12
Bits
Integral Nonlinearity (INL)
±1
±1.7
LSB
Bipolar
±3
Unipolar
±1
LSB
Load current ±10 mA within 300 mV of supply
Differential Nonlinearity (DNL)
−0.99
±0.3
+1
LSB
Guaranteed monotonic
Full-Scale (FS) Error
±2.5
mV
All 1s loaded to DAC register, no load applied
±0.65
% of FS
10 mA load applied
Offset Error
±10
mV
Unipolar, 2.5 V to 7.5 V range, 5 V to 10 V range
±10
mV
Unipolar, 0 V to 5 V range
±2.5
±12
mV
Bipolar
Offset Error Temperature Coefficient
±8
µV/°C
Measured in the linear region, TA = 25°C
Gain Error
±0.15
% FSR
Bipolar
±0.4
% FSR
Unipolar
Gain Error Temperature Coefficient
±3
ppm/°C
DAC OUTPUT CHARACTERISTICS
Bipolar Open-Loop DAC Range
0
5
V
BI-VOUT0, BI-VOUT1, BI-VOUT2, and BI-VOUT3
−4
+1
V
−5
0
V
Unipolar DAC Range
0
5
V
UNI-VOUT0, UNI-VOUT1, UNI-VOUT2, and UNI-VOUT3
2.5
7.5
V
5
10
V



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