Texas Instruments ADS869 Series Manual page 9

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Electrical Characteristics (continued)
Minimum and maximum specifications are at T
AVDD = 5 V, DVDD = 3 V, V
PARAMETER
INTERNAL REFERENCE OUTPUT
Voltage on REFIO pin
(10)
V
(REFIO_INT)
(configured as output)
Internal reference temperature
drift
C Decoupling capacitor on REFIO
(OUT_REFIO)
Reference voltage to ADC
V
(REFCAP)
(on REFCAP pin)
Reference buffer output
impedance
Reference buffer temperature
drift
Decoupling capacitor on
C
(OUT_REFCAP)
REFCAP
Turn-on time
EXTERNAL REFERENCE INPUT
External reference voltage on
V
REFIO_EXT
REFIO (configured as input)
POWER-SUPPLY REQUIREMENTS
AVDD Analog power-supply voltage
DVDD Digital power-supply voltage
I
AVDD_DYN
I Analog supply current
AVDD_STC
I
STDBY
I
PWR_DN
I Digital supply current
DVDD_DYN
DIGITAL INPUTS (CMOS)
V
Digital input logic levels
IH
DVDD > 2.1 V
V
IL
V
Digital input logic levels
IH
DVDD ≤ 2.1 V
V
IL
Input leakage current
Input pin capacitance
DIGITAL OUTPUTS (CMOS)
V
OH
Digital output logic levels
V
OL
Floating state leakage current
Internal pin capacitance
TEMPERATURE RANGE
T Operating free-air temperature
A
(10) Does not include the variation in voltage resulting from solder-shift and long-term effects.
Copyright © 2015, Texas Instruments Incorporated
= –40°C to 125°C. Typical specifications are at T
A
= 4.096 V (internal), and f
REF
TEST CONDITIONS
At T = 25°C
A
At T = 25°C
A
C = 22 µF,
(OUT_REFCAP)
C = 22 µF
(OUT_REFIO)
Analog supply
Digital supply range
Digital supply range for specified
performance
For the ADS8698; AVDD = 5 V, f
maximum and internal reference
Dynamic,
AVDD
For the ADS8694; AVDD = 5 V, f
maximum and internal reference
For the ADS8698; AVDD = 5 V,
device not converting and internal
reference
Static
For the ADS8694; AVDD = 5 V,
device not converting and internal
reference
At AVDD = 5 V, device in STDBY
Standby
mode and internal reference
Power-
At AVDD = 5 V, device in PWR_DN
down
At DVDD = 3.3 V, output = 0000h
I = 500-μA source
O
I = 500-μA sink
O
Only for SDO
Product Folder Links:
= 500 kSPS, unless otherwise noted.
SAMPLE
MIN
4.095
10
4.095
10
4.046
4.75
1.65
2.7
=
S
=
S
0.7 × DVDD
–0.3
0.8 × DVDD
–0.3
0.8 × DVDD
0
–40
ADS8694 ADS8698
ADS8694, ADS8698
SBAS686 – JULY 2015
= 25°C.
A
TYP MAX UNIT
4.096 4.097 V
6 10 ppm/°C
22 µF
4.096 4.097 V
0.5 1 Ω
0.6 1.5 ppm/°C
22 μF
15 ms
4.096 4.146 V
5 5.25 V
3.3 AVDD
V
3.3 5.25
13 16
mA
8.5 11.5
10 12
mA
5.5 8.5
3 4.5 mA
3 20 μA
0.5 mA
DVDD + 0.3
V
0.3 × DVDD
DVDD + 0.3
V
0.2 × DVDD
100 nA
5 pF
DVDD
V
0.2 × DVDD
1 µA
5 pF
125 °C
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TEST
(1)
LEVEL
A
B
B
A
B
B
B
B
C
B
B
B
A
A
A
A
A
B
A
A
A
A
A
A
C
A
A
A
C
B
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