AD7538 データシートの表示（PDF） - Analog Devices
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AD7538 Datasheet PDF : 16 Pages
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AD7538
AC PERFORMANCE CHARACTERISTICS
These characteristics are included for design guidance only and are not subject to test. VDD = 11.4 V to 15.75 V, VREF = 10 V, VPIN3 = VPIN4 =
0 V, VSS = 0 V or −300 mV, output amplifier is AD711 except where noted.
Table 2.
Parameter
Output Current Settling Time
TA = 25°C
TA = TMIN, TMAX
1.5
Digital-to-Analog Glitch Impulse
Multiplying Feedthrough Error
Power Supply Rejection
ΔGain/ΔVDD
Output Capacitance
COUT (Pin 3)
COUT (Pin 3)
Output Noise Voltage Density
(10 Hz to 100 kHz)
20
3
±0.01
260
130
15
5
±0.02
260
130
Unit
μs max
nV-sec typ
mV p-p typ
Test Conditions/Comments
To 0.003% of full-scale range
IOUT load= 100 Ω, CEXT = 13 pF DAC register alternately loaded
with all 1s and all 0s; typical value of settling time is 0.8 μs
Measured with VREF = 0 V. IOUT load = 100 Ω, CEXT = 13 pF; DAC
register alternately loaded with all 1s and all 0s
VREF = ±10 V, 10 kHz sine wave DAC
Register loaded with all 0s
% per % max ΔVDD = ±5%
pF max
pF max
DAC register loaded with all 1s
DAC register loaded with all 0s
nV√Hz typ
Measured between RFB and IOUT
TIMING CHARACTERISTICS
VDD = 11.4 V to 15.75 V, VREF = 10 V, VPIN3 = VPIN4 = 0 V, VSS = 0 V or −300 mV. All specifications TMIN to TMAX unless otherwise noted. See
Figure 2 for a timing diagram.
Table 3.
Parameter1
t1
t2
t3
t4
t5
t6
Limit at
TA = +25°C
0
0
170
170
140
20
Limit at TA = 0°C to +70°C
TA = −25°C to +85°C
0
0
200
200
160
20
Limit at
TA = −55°C to +125°C
0
0
240
240
180
30
Unit
ns min
ns min
ns min
ns min
ns min
ns min
Test Conditions/Comments
CS to WR setup time
CS to WR hold time
LDAC pulse width
Write pulse width
Data setup time
Data hold time
1 Temperature range as follows: J, K Versions: 0°C to +70°C
A, B Versions: −25°C to +85°C
S, T Versions: −55°C to +125°C
Rev. B | Page 4 of 16
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