AD7945BR Analog Devices Inc, AD7945BR Datasheet - Page 3

• Manufacturer Part Number: AD7945BR
• Description: DAC 1-CH R-2R 12-Bit 20-Pin SOIC W
• Manufacturer: Analog Devices Inc

Specifications of AD7945BR

• Package: 20SOIC W
• Resolution: 12 Bit
• Conversion Rate: 1.7 MSPS
• Architecture: R-2R
• Digital Interface Type: Parallel
• Number Of Outputs Per Chip: 1
• Output Type: Current
• Full Scale Error: ±2 LSB
• Integral Nonlinearity Error: ±0.5 LSB
• Maximum Settling Time: 0.6(Typ) us
• Rohs Status: RoHS non-compliant
• Settling Time: 600ns
• Number Of Bits: 12
• Data Interface: Parallel
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 25µW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Number Of Channels: 1
• Interface Type: Parallel
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: SOIC W
• Lead Free Status / Rohs Status: Not Compliant

SPECIFICATIONS
BIASED MODE
wise noted. AD7945, AD7948: V
Parameter
ACCURACY
DIGITAL INPUTS
DIGITAL OUTPUT (SRO)
POWER REQUIREMENTS
NOTES
1
2
3
Specifications subject to change without notice.
REV. B
These specifications apply with the devices biased up at 1.23 V for single supply applications. The model numbering reflects this by means of a “–B” suffix
Temperature ranges as follows: A Versions: –40 C to +85 C.
Guaranteed by design.
(for example: AD7943AN-B). Figure 16 is an example of Biased Mode Operation.
Resolution
Relative Accuracy
Differential Nonlinearity
Gain Error @ +25 C
Gain Temperature Coefficient
Output Leakage Current
Input Resistance
V
V
V
V
I
C
Output Low Voltage (V
Output High Voltage (V
V
Power Supply Sensitivity
I
I
INH
DD
DD
INH
INH
INL
INL
DD
IN
T
I
@ I
@ AGND Pin (AD7945, AD7948)
OUT1
, Input Capacitance
Gain/ V
MIN
, Input Current
(AD7943)
(AD7945, AD7948)
, Input Low Voltage @ V
, Input Low Voltage @ V
@ +25 C
T
, Input High Voltage @ V
, Input High Voltage @ V
Range
OUT2
MIN
to T
to T
Pin (AD7943)
DD
MAX
MAX
(AD7943: V
3
OL
OH
3
)
DD
)
= +3 V to +5.5 V; V
DD
DD
3
DD
DD
1
DD
= +5 V
= +3.3 V
= +3 V to +5.5 V; V
= +5 V
= +3.3 V
A Grades
12
2
5
10
100
6
6
2.4
2.1
0.8
0.6
10
0.2
V
3.0/5.5
–75
5
5
IOUT1
1
0.9
3
4
1
DD
– 0.2
= AGND = 1.23 V; V
IOUT1
= V
2
Units
Bits
LSB max
LSB max
LSB max
LSB max
ppm FSR/ C typ
ppm FSR/ C max
nA max
nA max
k min
k min
V min
V min
V max
V max
pF max
V max
V min
V min/V max
dB typ
IOUT2
A max
A max
A max
–3–
= AGND = 1.23 V; V
REF
= +0 V to 2.45 V; T
Test Conditions/Comments
1 LSB = (V
V
All Grades Guaranteed Monotonic
over Temperature
See Terminology Section
Typically 20 nA over Temperature
This Varies with DAC Input Code
For 1 CMOS Load
V
SRO Open Circuit; No STB Signal; Typically
1 A. Typically 100 A with 1 MHz STB
Frequency.
V
Typically 1 A.
IOUT1
INH
INH
REF
= +0 V to 2.45 V; T
= V
= V
AD7943/AD7945/AD7948
= 1.23 V and V
DD
DD
A
= T
IOUT1
– 0.1 V min, V
– 0.1 V min, V
MIN
to T
– V
MAX
REF)
A
REF
, unless otherwise noted.)
= T
/2
12
= 0 V
MIN
INL
INL
= 300 V When
to T
= 0.1 V max.
= 0.1 V max.
MAX
, unless other-