Datasheet

(V
DD
= +5 V 6 5%, V
SS
= –5 V 6 5%, AGND = DGND = 0 V, Rl DAC = +3 V and decoupled as shown in Figure 2,
V
OUT
Load to AGND; = 2 kV, C
L
= 100 pF. All specifications T
MIN
to T
MAX
unless otherwise noted.)
DAC SECTION
Parameter J Versions
1
A Version
1
Units Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal-to-Noise Ratio
3
(SNR) @ +25°C 78 78 dB min V
OUT
= 1 kHz Sine Wave, f
SAMPLE
= 83 kHz
T
MIN
to T
MAX
78 77 dB min Typically 82 dB at +25°C for 0 < V
OUT
< 20 kHz
4
Total Harmonic Distortion (THD) –86 –86 dB typ V
OUT
= 1 kHz Sine Wave, f
SAMPLE
= 83 kHz
Typically –84 dB at +25°C for 0 < V
OUT
< 20 kHz
4
Peak Harmonic or Spurious Noise –86 –86 dB typ V
OUT
= 1 kHz, f
SAMPLE
= 83 kHz
Typically –84 dB at +25°C for 0 < V
OUT
< 20 kHz
4
DC ACCURACY
Resolution 14 14 Bits
Integral Nonlinearity ±2 ±2 LSB max
Differential Nonlinearity ±1 ±1 LSB max Guaranteed Monotonic
Bipolar Zero Error ±10 ±10 LSB max
Positive Full-Scale Error
5
±10 ±10 LSB max
Negative Full-Scale Error
5
±10 ±10 LSB max
REFERENCE OUTPUT
6
RO DAC @ +25°C 2.99/3.01 2.99/3.01 V min/V max
RO DAC TC ±25 ±25 ppm/°C typ
±40 ppm/°C max
Reference Load Change
(∆RO DAC vs. ∆I) –1.5 –1.5 mV max Reference Load Current Change (0 µA–500 µA)
REFERENCE INPUT
RI DAC Input Range 2.85/3.15 2.85/3.15 V min/V max 3 V ± 5%
Input Current 1 1 µA max
LOGIC INPUTS
(
LDAC, TFS, TCLK, DT)
Input High Voltage, V
INH
2.4 2.4 V min V
DD
= 5 V ± 5%
Input Low Voltage, V
INL
0.8 0.8 V max V
DD
= 5 V ± 5%
Input Current, I
IN
±10 ±10 µA max V
IN
= 0 V to V
DD
Input Capacitance, C
IN
7
10 10 pF max
ANALOG OUTPUT
Output Voltage Range ±3 ±3 V nom
DC Output Impedance 0.3 0.3 Ω typ
Short-Circuit Current 20 20 mA typ
AC CHARACTERISTICS
7
Voltage Output Settling-Time Settling Time to Within ±1/2 LSB of Final Value
Positive Full-Scale Change 4 4 µs max Typically 3 µs
Negative Full-Scale Change 4 4 µs max Typically 3.5 µs
Digital-to-Analog Glitch Impulse 10 10 nV secs typ DAC Code Change All 1s to All 0s
Digital Feedthrough 2 2 nV secs typ
V
IN
to V
OUT
Isolation 100 100 dB typ V
IN
= ±3 V, 41.5 kHz Sine Wave
POWER REQUIREMENTS As per ADC Section
NOTES
1
Temperature ranges are as follows: J Version, 0°C to +70°C; A Version, –40°C to +85°C.
2
V
OUT
(p-p) = ±3 V.
3
SNR calculation includes distortion and noise components.
4
Using external sample and hold, see Figures 13 to 15.
5
Measured with respect to REF IN and includes bipolar offset error.
6
For capacitive loads greater than 50 pF a series resistor is required (see Internal Reference section).
7
Sample tested @ +25°C to ensure compliance.
Specifications subject to change without notice
AD7869
–3–
REV. B