ISL26132_14 Datasheet, PDF (6/23 Pages) Intersil Corporation – Low-Noise 24-bit Delta Sigma ADC

ISL26132, ISL26134
Electrical Specifications V_REF+ = 5V, V_REF- = 0V, A_VDD = 5V, D_VDD = 5V, A_GND = D_GND = 0V, MCLK = 4.9152MHz, and
T_A = -40°C to +105°C, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +105°C (Continued)
SYMBOL
PARAMETER
TEST LEVEL or NOTES
MIN
MAX
(Note 6)
TYP
(Note 6)
UNITS
CMRR Common Mode Rejection
AtDC, Gain = 1, V = 1V
85
100
dB
At DC, Gain = 128, V = 0.1V
100
dB
50Hz/60Hz Rejection (Note 9) External 4.9152MHz Clock
130
dB
PSRR Power Supply Rejection
At DC, Gain = 1, V = 1V
82
100
dB
At DC, Gain = 128, V = 0.1V
100
105
dB
Input Referred Noise
See “Typical Characteristics” beginning
on page 8
Noise Free Bits
See “Typical Characteristics” beginning
on page 8
VOLTAGE REFERENCE INPUT
VREF
VREF-
VREF+
IREF
Voltage Reference Input
VREF = VREF+ - VREF-
Negative Reference Input
Positive Reference Input
Voltage Reference Input Current
1.5
AVDD
A_VDD + 0.1
V
A_GND - 0.1
V_REF+ - 1.5
V
V_REF- + 1.5
A_VDD + 0.1
V
±350
nA
POWER SUPPLY REQUIREMENTS
A_VDD Analog Supply Voltage
4.75
5.0
5.25
V
D_VDD Digital Supply Voltage
2.7
3.3
5.25
V
A_IDD Analog Supply Current
Normal Mode, A_VDD = 5, Gain = 1, 2
7
8.5
mA
Normal Mode, A_VDD = 5, Gain = 64, 128
9
12
mA
Standby Mode
0.2
3
µA
Power-Down
0.2
2.5
µA
D_IDD Digital Supply Current
Normal Mode, A_VDD = 5, Gain = 1, 2
Normal Mode, A_VDD = 5, Gain = 64, 128
Standby Mode
750
950
µA
750
950
µA
1.5
26
µA
Power-Down
1
26
µA
P_D Power Dissipation, Total
Normal Mode, A_VDD = 5, Gain = 1, 2
Normal Mode, A_VDD = 5, Gain = 64, 128
Standby Mode
49.6
mW
68
mW
0.14
mW
Power-Down
0.14
mW
DIGITAL INPUTS
V_IH
V_IL
V_OH
V_OL
Input Leakage Current
I_OH = -1mA
I_OL = 1mA
0.7 D_VDD
D_VDD - 0.4
V
0.2 D_VDD
V
V
0.2 D_VDD
V
±10
µA
External Clock Input Frequency
0.3
4.9152
MHz
Serial Clock Input Frequency
1
MHz
NOTES:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
7. FSR = Full Scale Range = VREF/Gain
8. Gain accuracy is calibrated at the factory (AVDD = +5V).
9. Specified for word rate equal to 10Sps.
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6
FN6954.3
November 20, 2014