AD7945BR Analog Devices Inc, AD7945BR Datasheet - Page 2

• 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

NORMAL MODE
AD7943/AD7945/AD7948–SPECIFICATIONS
AD7945, AD7948: V
Parameter
ACCURACY
REFERENCE INPUT
DIGITAL INPUTS
DIGITAL OUTPUT (AD7943 SRO)
POWER REQUIREMENTS
NOTES
1
2
3
4
Specifications subject to change without notice.
The AD7943, AD7945 and AD7948 are specified in the normal current mode configuration and in the biased current mode for single-supply applications.
Temperature ranges as follows: B Grades: –40 C to +85 C; T Grade: –55 C to +125 C.
The T Grade applies to the AD7945 only.
Guaranteed by design.
Figures 14 and 15 are examples of normal mode operation.
Resolution
Relative Accuracy
Differential Nonlinearity
Gain Error
Gain Temperature Coefficient
Output Leakage Current
Input Resistance
V
V
I
C
Output Low Voltage (V
Output High Voltage (V
V
Power Supply Sensitivity
I
I
INH
DD
DD
INH
INL
DD
IN
T
I
OUT1
, Input Capacitance
Gain/ V
(AD7943)
(AD7945, AD7948)
MIN
, Input Current
, Input Low Voltage
@ +25 C
T
, Input High Voltage
Range
MIN
to T
to T
DD
MAX
MAX
DD
= +4.5 V to +5.5 V; V
(AD7943: V
4
OL
OH
4
)
)
4
DD
= +4.5 V to +5.5 V; V
B Grades
12
2
5
10
100
6
12
2.4
0.8
10
0.2
V
4.5/5.5
–75
5
5
IOUT1
0.5
0.5
2
1
DD
– 0.2
= AGND = 0 V; V
2
T Grade
12
2
5
10
100
6
12
2.4
0.8
10
0.2
V
4.5/5.5
–75
5
5
0.5
0.5
2
1
DD
IOUT1
– 0.2
REF
= V
2, 3
= +10 V; T
IOUT2
–2–
Units
Bits
LSB max
LSB max
LSB max
ppm FSR/ C typ
ppm FSR/ C max
nA max
nA max
k min
k max
V min
V max
pF max
V max
V min
V min/V max
dB typ
A max
A max
A max
= AGND = 0 V; V
A
= T
MIN
to T
REF
MAX
1
, unless otherwise noted.)
= +10 V; T
Test Conditions/Comments
1 LSB = V
All Grades Guaranteed Monotonic over
Temperature
See Terminology Section
Typically 20 nA over Temperature
Typical Input Resistance = 9 k
For 1 CMOS Load
V
SRO Open Circuit. No STB Signal. Typically
1 A. Typically 100 A with a 1 MHz STB
Frequency. At Input Levels of 0.8 V and 2.4 V,
I
V
Typically 1 A. At Input Levels of 0.8 V and
2.4 V, I
DD
INH
INH
Is Typically 2.5 mA.
= V
= V
DD
DD
DD
A
REF
Is Typically 2.5 mA.
= T
– 0.1 V min, V
– 0.1 V min, V
/2
MIN
12
to T
= 2.44 mV when V
MAX
, unless otherwise noted.
INL
INL
= 0.1 V max.
= 0.1 V max.
REF
= 10 V
REV. B