AD7112 Analog Devices, AD7112 Datasheet - Page 2

• Manufacturer Part Number: AD7112
• Description: Dual CMOS Multiplying DAC with Anti-Log Transfer Function for Audio Volume Control Applications
• Manufacturer: Analog Devices

Specifications of AD7112

• Resolution (bits): 17bit
• Dac Update Rate: 222kSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +5.25V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

Parameter
ACCURACY
LOGIC INPUTS
POWER REQUIREMENTS
NOTES
2
3
Specifications subject to change without notice.
l
Output amplifier AD712 except where noted. All specifications T
Temperature range as follows: B, C Versions: –40 C to +85 C.
Guaranteed by design, not production tested.
The part will function with V
AD7112–SPECIFICATIONS
Resolution
Accuracy Relative to
0 dB Attenuation
0.375 dB Steps:
0.75 dB Steps:
1.5 dB Steps:
3.0 dB Steps:
6.0 dB Steps:
Gain Error
Output Leakage Current
Input Resistance,
Input Resistance Match
Feedback Resistance,
CS, WR,
DAC A/DAC B,
DB0–DB7
V
DD
Accuracy
Monotonic
Accuracy
Monotonic
Accuracy
Monotonic
Accuracy
Monotonic
Accuracy
Monotonic
OUT A, OUT B
V
R
Input Low Voltage, V
Input High Voltage, V
Input Leakage Current
Input Capacitance
IN
FB
, Range
A, V
A, R
IN
FB
3
B
B
0.17 dB
0.35 dB
0.7 dB
1.4 dB
2.7 dB
2
DD
INL
= 5 V
INH
T
+25 C
0.375
0 to 36
0 to 54
0 to 48
0 to 72
0 to 54
Full Range 0 to 78
0 to 66
Full Range Full Range
0 to 72
Full Range Full Range
9/15
9.3/15.7
0.8
2.4
10
4.75/5.25
2
2
10% with degraded performance.
0.1
50
A
1
1
=
C Version
0 to 36
0 to 54
0 to 42
0 to 66
0 to 48
0 to 54
0 to 60
9.3/15.7
4.75/5.25
T
T
0.375
9/15
0.8
2.4
10
2
2
0.15
400
1
10
A
MIN
1
=
, T
MAX
(V
DD
= +5 V
MIN
T
+25 C
0.375
0 to 30
0 to 48
0 to 42
0 to 72
0 to 48
0 to 85.5
0 to 60
Full Range
0 to 60
Full Range Full Range
9/15
9.3/15.7
0.8
2.4
10
4.75/5.25
2
2
0.15
50
2
1
A
to T
=
B Version
–2–
MAX
5%; OUT A = OUT B = AGND = DGND = 0 V; V
unless otherwise noted.)
4.75/5.25
T
T
0.375
0 to 30
0 to 48
0 to 36
0 to 60
0 to 42
0 to 72
0 to 48
0 to 60
9/15
9.3/15.7
0.8
2.4
10
2
2
Full Range
0.2
400
10
A
MIN
2
=
, T
MAX
V min/max
Units
dB
dB min
dB min
dB min
dB min
dB min
dB min
dB min
dB min
dB min
dB min
dB max
nA max
k min/max Typically 12 k .
% max
k min/max
V max
V min
pF max
mA max
mA max
A max
Conditions/Comments
Guaranteed Attenuation
Ranges for Specified Step Sizes.
Full Range Is 0 dB to 88.5 dB.
Measured Using R
R
Loaded With All 0s.
For Specified Performance.
Logic Inputs = V
Logic Inputs = 0 V or V
FB
B. Both DAC Registers
IN
A = V
IN
B = 10 V.
IL
FB
or V
A,
IH
DD
REV. 0