8-Channel, 12-Bit, Configurable ADC/VDAC/IDAC
with On-Chip Reference, I2C Interface
SGM90508
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 2.7V to 5.5V, VREF = 2.5V (internal), 1.7V ≤ VLOGIC ≤ VDD, TA = -40℃ to +105℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VDAC Performance (3)
RLOAD = ∞
2
Capacitive Load Stability
nF
RLOAD = 1kΩ
10
Resistive Load (1)
1
kΩ
Short-Circuit Current
25
mA
Due to single channel, full-scale output
change
DC Crosstalk (1)
-4
4
μV
Ω
DC Output Impedance
0.2
0.01
57
DC Power Supply Rejection Ratio
DAC code = mid-scale,
VDD = 3V ± 10% or 5V ± 10%
PSRR
mV/V
Ω
(1)
Load Impedance at Rails (4)
Load Regulation
VDD = 5V ± 10%, DAC code = mid-scale,
-10mA ≤ IOUT ≤ 10mA
150
μV/mA
μs
VDD = 3V ± 10%, DAC code = mid-scale,
-10mA ≤ IOUT ≤ 10mA
100
Power-Up Time
Exiting power-down mode, VDD = 5V
3.4
96
76
61
56
0.41
3.3
4
100Hz
1kHz
VDD ACPSRR
dB
10kHz
100kHz
Slew Rate
V/μs
μs
Settling Time
DAC Glitch Impulse
DAC to DAC Crosstalk
Digital Crosstalk
Analog Crosstalk
Digital Feedthrough
nV-sec
nV-sec
nV-sec
nV-sec
nV-sec
7
0.8
4
0.1
DAC code = full-scale,
output range = 0V to 2 × VREF
Multiplying Bandwidth
240
kHz
DAC code = mid-scale,
output range = 0V to 2 × VREF
measured at 10kHz
Output Voltage Noise Spectral
Density
,
210
nV/√Hz
Signal-to-Noise Ratio
Spurious Free Dynamic Range
Signal-to-Noise + Distortion
Total Harmonic Distortion
Reference Input
SNR
SFDR
SINAD
THD
79
81
dB
dB
dB
dB
75
-77
VREF Input Voltage
2
VDD
V
DAC output range = 0V to 2 × VREF
DAC output range = 0V to VREF
15
20
VREF Input Impedance
Reference Output
kΩ
At ambient
2.484
2.498
2.5
2.5
11
2.516
2.502
VREF Output Voltage
V
Factory precision
VREF Temperature Coefficient
ppm/℃
SG Micro Corp
www.sg-micro.com
DECEMBER 2023
5