AD7112 Analog Devices, AD7112 Datasheet - Page 3

• 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

REV. 0
TIMING SPECIFICATIONS
Parameter
CS to WR Setup Time
CS to WR Hold Time
DAC Select to WR Setup Time
DAC Select to WR Hold Time
Data Valid to WR Setup Time
Data Valid to WR Hold Time
WR Pulse Width
NOTES
1
Specifications subject to change without notice.
AC PERFORMANCE CHARACTERISTICS
Parameter
DC Supply Rejection
Digital-to-Analog Glitch Impulse
Output Capacitance, C
AC Feedthrough
Channel-to-Channel Isolation
Digital Feedthrough
Output Noise Voltage Density
Total Harmonic Distortion
NOTES
1
Specifications subject to change without notice.
Timing specifications guaranteed by design not production tested. All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage
Guaranteed by design, not production tested.
level of 1.6 V.
V
V
V
V
(30 Hz to 50 kHz)
IN
IN
IN
IN
A to OUT A
B to OUT B
A to OUT B
B to OUT A
OUT A
Gain/ V
, C
OUT B
DD
1
t
t
t
t
t
t
t
(V
CS
CH
AS
AH
DS
DH
WR
T
+25 C
0.001
10
50
–94
–94
–87
–87
1
15
–91
DD
A
= +5 V
=
T
0
0
4
0
55
10
53
T
–40 C to
+85 C
0.005
10
50
–90
–90
–87
–87
1
15
–91
A
A
5%; 0UT A = OUT B = AGND = DGND = O V; V
= +25 C
=
1
(V
V
IN
DD
B = 10 V. Output amplifier AD712 except where noted.)
= +5 V
Units
dB/% max
nV s typ
pF max
dB max
dB max
dB typ
dB typ
nV s typ
nV/ Hz typ
dB typ
–3–
T
0
0
4
0
55
10
53
A
= –40 C to +85 C
5%; 0UT A = OUT B = AGND = DGND = 0 V; V
Conditions/Comments
Measured with AD843 as output amplifier for input
code transition 10000000 to 00000000.
V
Registers loaded with all 1s.
V
V
V
V
Measured with input code transitions of all 0s to all 1s.
Measured between R
R
V
Registers loaded with all 0s.
IN
IN
IN
IN
IN
IN
FB
V
DD
A, V
A = 6 V rms at 10 kHz sine wave,
B = 0 V. DAC Registers loaded with all 0s.
B = 6 V rms at 10 kHz sine wave,
A = 0 V. DAC Registers loaded with all 0s.
A = V
B and OUT B.
=
IN
IN
B = 6 V rms at 1 kHz. DAC
5%. Input Code = 00000000
B = 6 V rms at 1 kHz. DAC
IN
Units
ns min
ns min
ns min
ns min
ns min
ns min
ns min
A = V
FB
IN
B = 10 V)
A and OUT A or between
Conditions/Comments
See Figure 3.
IN
AD7112
A =