AD7719BRUZ Analog Devices Inc, AD7719BRUZ Datasheet - Page 6

• Manufacturer Part Number: AD7719BRUZ
• Description: Dual 16-Bit & 24-Bit SD ADC
• Manufacturer: Analog Devices Inc

Specifications of AD7719BRUZ

• Number Of Bits: 16/24
• Sampling Rate (per Second): 105
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 4.5mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7719EB - BOARD EVAL FOR AD7719
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

AD7719
Parameter
NOTES
10
11
12
13
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
(T
AV
AV
DV
DV
AGND to DGND
PWRGND to AGND . . . . . . . . . . . . . . . . –20 mV to +20 mV
AV
Analog Input Voltage to AGND . . . . –0.3 V to AV
Reference Input Voltage to AGND . . –0.3 V to AV
Total AIN/REFIN Current (Indefinite) . . . . . . . . . . . . 30 mA
Digital Input Voltage to DGND . . . . –0.3 V to DV
Digital Output Voltage to DGND . . . –0.3 V to DV
Operating Temperature Range . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
1
2
3
4
5
6
7
8
9
Temperature range –40°C to +85°C.
Guaranteed by design and/or characterization data on production release.
System zero calibration will remove this error.
A calibration at any temperature will remove this drift error.
The main ADC is factory-calibrated with AV
are significantly different from these, internal full-scale calibration will restore this error to the published specification. System calibration can be used to reduce this
error to the order of the noise. Full-scale error applies to both positive and negative full scale.
A system full-scale calibration will remove this error.
A typical gain error of ±10 µV results following a user self-calibration.
Simultaneous 50 Hz and 60 Hz rejection is achieved using 19.8 Hz (SF = 69) update rate. Normal mode rejection in this case is 60 dB min.
After a calibration if the analog input exceeds positive full scale, the converter will output all 1s. If the analog input is less than negative full scale, the device will
output all 0s.
FS = Full-Scale Input. FS = 1.024 × REFIN1/Gain on the main ADC, where REFIN1 = REFIN1(+) – REFIN1(–). FS = REFIN2 on the aux ADC when ARN = 1
in the aux ADC control register (AD1CON) and REFIN2/2 on the aux ADC when ARN = 0.
Input and output levels on the I/O Port are with respect to AV
Normal mode refers to the case where both main and aux ADCs are running.
ADC disable is entered by setting both the AD0EN and AD1EN bits in the main and aux ADC control registers to a 0 and setting the mode bits (MD2, MD1,
MD0) in the mode register to non-0.
A
Power Supply Currents (Continued)
DD
DD
DD
= 25°C, unless otherwise noted.)
DD
DD
AI
AI
AI
DI
AI
DI
AI
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to DV
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
DD
DD
DD
DD
DD
DD
DD
Current (Main ADC)
Current (Aux ADC)
Current (Main and Aux ADC)
(ADC Disable Mode)
(Power-Down Mode)
(ADC Disable Mode)
(Power-Down Mode)
DD
Model
AD7719BR
AD7719BRU
EVAL-AD7719EB
. . . . . . . . . . . . . . . . . . . . . . . . . . –5 V to +5 V
2
. . . . . . . . . . . . . . . . . . . –20 mV to +20 mV
13
DD
1
= DV
Temperature Range
–40°C to +85°C
–40°C to +85°C
AD7719B
1.1
0.55
0.3
1.25
0.35
0.4
0.15
10
2
30
8
1
DD
= 4 V, T
DD
and AGND.
DD
DD
DD
DD
A
= 25°C, REFIN1(+) – REFIN1(–) = 2.5 V. If the user power supplies or temperature conditions
ORDERING GUIDE
+0.3 V
+0.3 V
+0.3 V
+0.3 V
–6–
Evaluation Board
Package Description
SOIC
TSSOP
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
SOIC Package
TSSOP Package
Lead Temperature, Soldering
NOTES
1
2
Unit
mA max
mA max
mA max
mA max
mA max
mA max
mA max
µA max
µA max
µA max
µA max
µA max
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; 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.
AGND and DGND are connected internally within the AD7719.
θ
θ
θ
θ
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
JA
JC
JA
JC
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 71.4°C/W
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 23°C/W
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 97.9°C/W
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 14°C/W
Test Conditions
AV
0.85 mA typ
AV
0.45 mA typ
AV
AV
1 mA typ
DV
DV
AV
DV
DV
DV
DV
AV
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 3 V or 5 V, Buffered Mode,
= 3 V or 5 V, Unbuffered Mode,
= 3 V or 5 V, 0.25 mA typ
= 3 V or 5 V, Main ADC Buffered,
= 3 V or 5 V
= 3 V or 5 V
= 3 V, 0.25 mA typ
= 5 V, 0.3 mA typ
= 3 V, 32.768 kHz Osc. Running
= 3 V, Oscillator Powered Down
= 5 V, 32.768 kHz Osc. Running
= 5 V, Oscillator Powered Down
Package Option
R-28
RU-28
REV. A