AD5426 Analog Devices, AD5426 Datasheet - Page 19

• Manufacturer Part Number: AD5426
• Description: High Bandwidth CMOS 8-Bit Serial Interface Multiplying D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5426

• Resolution (bits): 8bit
• Dac Update Rate: 2.47MSPS
• Dac Settling Time: 50ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

The input bias current of an op amp also generates an offset at
the voltage output as a result of the bias current flowing in
the feedback resistor, R
currents low enough to prevent any significant errors in
12-bit applications.
Common-mode rejection of the op amp is important in voltage
switching circuits since it produces a code-dependent error at
the voltage output of the circuit. Most op amps have adequate
common-mode rejection at an 8-, 10-, or 12-bit resolution.
Table 7. Suitable ADI Precision References
Part No.
ADR01
ADR01
ADR02
ADR02
ADR03
ADR03
ADR06
ADR06
ADR431
ADR435
ADR391
ADR395
Table 8. Suitable ADI Precision Op Amps
Part No.
OP97
OP1177
AD8551
AD8603
AD8628
Table 9. Suitable ADI High Speed Op Amps
Part No.
AD8065
AD8021
AD8038
AD9631
Output Voltage (V)
10
10
5
5
2.5
2.5
3
3
2.5
5
2.5
5
Supply Voltage (V)
±2 to ±20
±2.5 to ±15
2.7 to 5
1.8 to 6
2.7 to 6
Supply Voltage (V)
5 to 24
±2.5 to ±12
3 to 12
±2 to ±6
FB
. Most op amps have input bias
Initial Tolerance (%)
0.05
0.05
0.06
0.06
0.10
0.10
0.10
0.10
0.04
0.04
0.16
0.10
V
25
60
5
50
5
BW @ A
145
490
350
320
OS
(Max) (μV)
CL
(MHz)
I
0.1
2
0.05
0.001
0.1
B
(Max) (nA)
Slew Rate (V/μs)
180
100
425
1,300
Temp Drift (ppm/°C)
3
9
3
9
3
9
3
9
3
3
9
9
Rev. C | Page 19 of 28
0.1 Hz to 10 Hz
Noise (μV p-p)
0.5
0.4
1
2.3
0.5
Provided the DAC switches are driven from true wideband low
impedance sources (V
Consequently, the slew rate and settling time of a voltage
switching DAC circuit is determined largely by the output op amp.
To obtain minimum settling time in this configuration, it is
important to minimize capacitance at the V
is done by using low input capacitance buffer amplifiers and
careful board design. Most single-supply circuits include
ground as part of the analog signal range, which in turn
requires an amplifier that can handle rail-to-rail signals,. There
is a large range of single-supply amplifiers available from
Analog Devices.
V
1,500
1,000
3,000
10,000
OS
(Max) (μV)
I
1
1
1
1
1
1
1
1
0.8
0.8
0.12
0.12
SS
(mA)
IN
and AGND), they settle quickly.
Output Noise μV p-p
20
20
10
10
6
6
10
10
3.5
8
5
8
Supply Current (μA)
600
975
50
850
500
I
6,000
10,500
750
7,000
B
AD5426/AD5432/AD5443
(Max) (nA)
Package
SOIC-8, SOT-23, MSOP
SOIC-8, MSOP
SOIC-8, SC70-5
SOIC-8
REF
of the DAC. This
Package
SOIC-8
TSOT-23, SC70
SOIC-8
TSOT-23, SC70
SOIC-8
TSOT-23, SC70
SOIC-8
TSOT-23, SC70
SOIC-8
SOIC-8
TSOT-23
TSOT-23
Package
SOIC-8
MSOP, SOIC-8
MSOP, SOIC-8
TSOT
TSOT, SOIC-8