AD7937AR Analog Devices Inc, AD7937AR Datasheet - Page 2

• Manufacturer Part Number: AD7937AR
• Description: IC,D/A CONVERTER,DUAL,12-BIT,CMOS,SOP,24PIN
• Manufacturer: Analog Devices Inc

Specifications of AD7937AR

• Rohs Status: RoHS non-compliant
• Settling Time: 1µs
• Number Of Bits: 12
• Data Interface: Parallel
• Number Of Converters: 2
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 24mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)

Parameter
ACCURACY
REFERENCE INPUT
DIGITAL INPUTS
POWER SUPPLY
AD7937–SPECIFICATIONS
AC PERFORMANCE CHARACTERISTICS
These characteristics are included for Design Guidance only and are not subject to test.
(V
Parameter
Output Current Settling Time
Digital-to-Analog Glitch lmpulse
AC Feedthrough
Power Supply Rejection
Output Capacitance
Channel-to-Channel Isolation
Digital Crosstalk
Output Noise Voltage Density
Total Harmonic Distortion
NOTES
1
2
Specifications subject to change without notice.
Temperature range as follows: A, B Versions: –40°C to +85°C.
Sample tested at 25°C to ensure compliance.
Resolution
Relative Accuracy
Differential Nonlinearity
Gain Error
Gain Temperature Coefficient
Output Leakage Current
Input Resistance
V
V
V
I
C
V
I
DD
V
V
∆Gain/∆V
C
C
C
C
V
V
(10 Hz–100 kHz)
IN
DD
REFA
IH
IL
DD
IN
REFA
REFB
REFA
REFB
OUTA
OUTB
OUTA
OUTB
∆Gain/∆Temperature
I
I
Input Resistance Match
+25°C
T
= 5 V; V
(Input Current)
OUTA
OUTB
(Input High Voltage)
(Input Low Voltage)
(Input Capacitance)
MIN
, V
to I
to I
to I
to I
to T
REFB
OUTA
OUTB
DD
OUTB
OUTA
REFA
MAX
= V
REFB
2
= 10 V; I
2
;
OUTA
T
1
2.5
–70
–70
± 0.01
70
70
140
140
–84
–84
2.5
25
–82
A
A Version
12
± 1
± 1
± 6
± 5
5
10
5
10
9
20
± 3
2.4
0.8
± 1
± 10
10
4.5/5.5
2
0.1
= 25 C
= AGNDA = 0 V, I
B Version
12
± 1/2
± 1
± 3
± 5
5
10
5
10
9
20
± 3
2.4
0.8
± 1
± 10
10
4.5/5.5
2
0.1
Unit
µs max
nV-s typ
dB max
dB max
% per % max
pF max
pF max
pF max
pF max
dB typ
dB typ
nV-s typ
nV/√Hz typ
dB typ
OUTB
(V
specifications T
= AGNDB = 0 V. Output Amplifiers are AD644 except where noted.)
DD
= 5 V
Unit
Bits
LSB max
LSB max
LSB max
ppm/°C max
nA max
nA max
nA max
nA max
kΩ min
kΩ max
% max
V min
V max
µA max
µA max
pF max
V min/V max
mA max
mA typ
Test Conditions/Comments
To 0.01% of full-scale range. I
measured from falling edge of WR. Typical Value of Settling Time is 0.6 µs.
Measured with V
registers alternately loaded with all 0s and all 1s.
V
DAC registers loaded with all 0s.
∆V
DAC A, DAC B loaded with all 0s.
DAC A, DAC B loaded with all 1s.
V
V
Measured for a Code Transition of all 0s to all 1s. I
C
Measured between R
is 10 Hz–100 kHz.
V
REFA
REFA
REFB
EXT
IN
DD
= 6 V rms, 1 kHz. Both DACs loaded with all 1s.
10%, V
, V
= 13 pF.
= V
= 20 V p-p 10 kHz sine wave, V
= 20 V p-p 10 kHz sine wave, V
MIN
REFB
DD
to T
REFA
max – V
= 20 V p-p 10 kHz sine wave.
MAX
= V
REFA
Test Conditions/Comments
All grades guaranteed monotonic over temperature.
Measured using R
Typical value is 1 ppm/°C.
DAC A Register loaded with all 0s.
DAC B Register loaded with all 0s.
Typical Input Resistance = 14 kΩ.
Typically ± 0.5%.
V
unless otherwise noted.)
IN
REFB
FBA
DD
= V
= V
min.
and I
= 10 V; I
REFB
DD
.
OUTA
OUT
= 0 V. I
load = 100 Ω, C
OUTA
or R
FBA
OUTA
REFB
REFA
, R
FBB
= AGNDA = 0 V, I
FBB
, I
= 0 V. Both DACs loaded with all 1s.
= 0 V. Both DACs loaded with all 1s.
and I
OUTB
. Both DAC registers loaded with all 1s.
OUTB
load = 100 Ω, C
EXT
OUTA
. Frequency of measurement
= 13 pF. DAC output
, I
OUTB
OUTB
= AGNDB = 0 V. All
load = 100 Ω,
EXT
= 13 pF. DAC