ADS8380 Datasheet, PDF (4/29 Pages) Burr-Brown (TI) – 18-BIT, 600-kHz, PSEUDO-DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE AND REFERENCE

ADS8380
SLAS387A – NOVEMBER 2004 – REVISED DECEMBER 2004
www.ti.com
PARAMETER
TEST CONDITIONS
ADS8380IB
MIN
TYP
MAX
DYNAMIC CHARACTERISTICS
THD
Total harmonic
distortion ^{(7) (8)}
SNR Signal-to-noise ratio⁽⁷⁾
SINAD
Signal-to-noise
+ distortion⁽⁷⁾⁽⁸⁾
SFDR
Spurious free dynamic
range ⁽⁷⁾
–3dB Small signal
bandwidth
VIN = 4 V_p-p at 1 kHz
VIN = 4 V_p-p at 10 kHz
VIN = 4 V_p-p at 100 kHz
VIN = 4 V_p-p at 1 kHz
VIN = 4 V_p-p at 10 kHz
VIN = 4 V_p-p at 100 kHz
VIN = 4 V_p-p at 1 kHz
VIN = 4 V_p-p at 10 kHz
VIN = 4 V_p-p at 100 kHz
VIN = 4 V_p-p at 1 kHz
VIN = 4 V_p-p at 10 kHz
VIN = 4 V_p-p at 100 kHz
-112
-112
-92
91
91
89.5
91
91
87.5
119
117
92
75
REFERENCE INPUT
V_ref
Reference voltage input
range
2.5 4.096
4.2
Resistance ⁽⁹⁾
10
INTERNAL REFERENCE OUTPUT
V_ref
Reference voltage range IOUT = 0 A, T_A = 30°C
Source current
Static load
4.088 4.096
4.104
10
Line regulation
+VA = 4.75 V to 5.25 V
2.5
Drift
IOUT = 0 A
25
DIGITAL INPUT/OUTPUT
Logic family CMOS
V_IH
High level input voltage
+VBD – 1
+VBD + 0.3
V_IL
Low level input voltage
–0.3
0.8
V_OH
High level output voltage I_OH = 2 TTL loads
+VBD –0.6
V_OL
Low level output voltage I_OL = 2 TTL loads
0.4
Data format: MSB first, 2's complement or straight binary (selectable via the SB/2C pin)
POWER SUPPLY REQUIREMENTS
Power supply ^+VA
voltage
+VBD
4.75
5
5.25
2.7
3.3
5.25
I_CC
Supply current, 600-kHz
sample rate⁽¹⁰⁾
+VA = 5 V
22
25
POWER DOWN
I_CC(PD)
Supply current, power
down
2
NAP MODE
I_CC(NAP)
Supply current, nap
mode
3
Power-up time from nap
300
TEMPERATURE RANGE
Specified performance
–40
85
ADS8380I
MIN
TYP
-112
-112
-92
91
91
89.5
91
91
87.5
119
117
92
75
2.5 4.096
10
4.088 4.096
2.5
25
MAX
4.2
4.104
10
+VBD – 1
–0.3
+VBD –0.6
+VBD + 0.3
0.8
0.4
4.75
5
5.25
2.7
3.3
5.25
22
25
2
3
300
–40
85
UNIT
dB
dB
dB
dB
MHz
V
MΩ
V
µA
mV
ppm/°C
V
V
V
V
V
V
mA
µA
mA
ns
°C
(7) Measured using analog input circuit in Figure 51 and digital stimulus in Figure 56 and Figure 57 and reference voltage of 4.096 V.
(8) Calculated on the first nine harmonics of the input frequency.
(9) Can vary +/-30%.
(10) This includes only +VA current. With +VBD = 5 V, +VBD current is typically 1 mA with a 10-pF load capacitance on the digital output
pins.
4