AD7945BR Analog Devices Inc, AD7945BR Datasheet - Page 4

• 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
1.23 V. V
characteristics are included for Design Guidance and are not subject to test.
AD7943/AD7945/AD7948
AC PERFORMANCE CHARACTERISTICS
0 V. V
cluded for Design Guidance and are not subject to test.
AC PERFORMANCE CHARACTERISTICS
BIASED MODE
Parameter
DYNAMIC PERFORMANCE
Specifications subject to change without notice.
Parameter
DYNAMIC PERFORMANCE
Specifications subject to change without notice.
Output Voltage Settling Time
Digital to Analog Glitch Impulse
Multiplying Feedthrough Error
Output Capacitance
Digital Feedthrough
Digital Feedthrough (AD7945, AD7948)
Total Harmonic Distortion
Output Noise Spectral Density
Output Voltage Settling Time
Digital to Analog Glitch Impulse
Multiplying Feedthrough Error
Output Capacitance
Digital Feedthrough (AD7943)
Digital Feedthrough (AD7945, AD7948) 5
Total Harmonic Distortion
Output Noise Spectral Density
@ 1 kHz
@ 1 kHz
REF
REF
= 6 V rms, 1 kHz sine wave; T
= 1 kHz, 2.45 V p-p, sine wave biased at 1.23 V; DAC output op amp is AD820; T
(AD7943: V
(AD7943: V
DD
DD
= +3 V to +5.5 V; V
= +4.5 V to +5.5 V; V
A
= T
MIN
to T
B Grades
600
60
–75
60
30
5
–83
35
MAX
IOUT1
5
60
–75
60
30
5
5
–83
25
A Grades
; DAC output op amp is AD843; unless otherwise noted.) These characteristics are in-
IOUT1
= V
= V
IOUT2
IOUT2
T Grade
700
60
–75
60
30
5
5
–83
35
= AGND = 1.23 V. AD7945, AD7948: V
= AGND = 0 V. AD7945, AD7948: V
nV-s typ
dB max
pF max
pF max
nV-s typ
nV-s typ
dB typ
nV/ Hz typ
Units
–4–
s typ
Units
ns typ
nV-s typ
dB max
pF max
pF max
nV-s typ
nV-s typ
dB typ
nV/ Hz typ All 1s Loaded to DAC. V
To 0.01% of Full-Scale Range. V
DAC Latch Alternately Loaded with All 0s and All 1s
V
with All 0s and All 1s
DAC Latch Loaded with All 0s
All 1s Loaded to DAC
All 0s Loaded to DAC
Feedthrough to the DAC Output with LD1, LD2
High and Alternate Loading of All 0s and All 1s
into the Input Shift Register
Feedthrough to the DAC Output with CS High
and Alternate Loading of All 0s and All 1s to the
DAC Bus
All 1s Loaded to DAC. V
Test Conditions/Comments
REF
= 1.23 V. DAC Register Alternately Loaded
A
= T
Test Conditions/Comments
To 0.01% of Full-Scale Range. V
+10 V; DAC Latch Alternately Loaded with
All 0s and All 1s
Measured with V
Alternately Loaded with All 0s and All 1s
DAC Latch Loaded with All 0s
All 1s Loaded to DAC
All 0s Loaded to DAC
Feedthrough to the DAC Output with LD1,
LD2 High and Alternate Loading of All 0s
and All 1s into the Input Shift Register
Feedthrough to the DAC Output with CS
High and Alternate Loading of All 0s and
All 1s to the DAC Bus
Op Amp Is OP07
MIN
to T
DD
DD
MAX
= +4.5 V to +5.5 V; V
= +3 V to +5.5 V; V
; unless otherwise noted.) These
REF
REF
= 0 V. DAC Latch
= 1.23 V
REF
REF
IOUT1
= 0 V
IOUT1
= 0 V. Output
= AGND =
=AGND =
REF
REV. B
=