AD5687 データシートの表示（PDF） - Analog Devices
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AD5687 Datasheet PDF : 24 Pages
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AD5689/AD5687
Data Sheet
Parameter
LOGIC OUTPUTS (SDO)2
Output Low Voltage (VOL)
Output High Voltage (VOH)
Floating State Output Capacitance
POWER REQUIREMENTS
VLOGIC
ILOGIC
VDD
VDD
IDD
Normal Mode7
All Power-Down Modes8
Min
Typ
VLOGIC − 0.4
4
1.62
2.7
VREF + 1.5
0.59
1
Max
0.4
5.5
3
5.5
5.5
0.7
4
6
Unit
V
V
pF
V
µA
V
V
mA
µA
µA
Test Conditions/Comments
ISINK = 200 μA
ISOURCE = 200 μA
Gain = 1
Gain = 2
VIH = VDD, VIL = GND, VDD = 2.7 V to 5.5 V
−40°C to +85°C
−40°C to +105°C
1 DC specifications tested with the outputs unloaded, unless otherwise noted. Upper dead band = 10 mV; it exists only when VREF = VDD with gain = 1 or when VREF/2 =
VDD with gain = 2. Linearity is calculated using a reduced code range of 256 to 65,280 (AD5689) and 12 to 4080 (AD5687).
2 Guaranteed by design and characterization; not production tested.
3 Channel A can have an output current of up to 30 mA. Similarly, Channel B can have an output current of up to 30 mA, up to a junction temperature of 110°C.
4 VDD = 5 V. The devices include current limiting that is intended to protect them during temporary overload conditions. Junction temperature may be exceeded during
current limit, but operation above the specified maximum operation junction temperature can impair device reliability.
5 When drawing a load current at either rail, the output voltage headroom, with respect to that rail, is limited by the 25 Ω typical channel resistance of the output
devices. For example, when sinking 1 mA, the minimum output voltage = 25 Ω × 1 mA = 25 mV (see Figure 23).
6 Initial accuracy presolder reflow is ±750 µV; output voltage includes the effects of preconditioning drift.
7 Interface inactive. Both DACs active. DAC outputs unloaded.
8 Both DACs powered down.
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; 1.62 V ≤ VLOGIC ≤ 5.5 V; all specifications TMIN to TMAX, unless otherwise
noted. Temperature range = −40°C to +105°C, typical at 25°C. Guaranteed by design and characterization, not production tested.
Table 3.
Parameter1
Min
Output Voltage Settling Time
AD5689
AD5687
Slew Rate
Digital-to-Analog Glitch Impulse
Digital Feedthrough
Digital Crosstalk
Analog Crosstalk
DAC-to-DAC Crosstalk
Total Harmonic Distortion (THD)2
Output Noise Spectral Density (NSD)
Output Noise
Signal-to-Noise Ratio (SNR)
Spurious Free Dynamic Range (SFDR)
Signal-to-Noise-and-Distortion Ratio
(SINAD)
Typ
Max
5
8
5
7
0.8
0.5
0.13
0.1
0.2
0.3
−80
300
6
90
83
80
Unit
Test Conditions/Comments
µs
µs
V/µs
nV-sec
nV-sec
nV-sec
nV-sec
nV-sec
dB
nV/√Hz
µV p-p
dB
dB
dB
¼ to ¾ scale settling to ±2 LSB
¼ to ¾ scale settling to ±2 LSB
1 LSB change around major carry
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
DAC code = midscale, 10 kHz, gain = 2
0.1 Hz to 10 Hz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
At ambient, BW = 20 kHz, VDD = 5 V, fOUT = 1 kHz
1 See the Terminology section.
2 Digitally generated sine wave at 1 kHz.
Rev. B | Page 4 of 24
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