ADS7805 Datasheet, PDF (3/20 Pages) Burr-Brown (TI) – 16-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER

ELECTRICAL CHARACTERISTICS (Cont.)
T_A = –25°C to +85°C, f_S = 100kHz, V_DIG = V_ANA = +5V, using internal reference, unless otherwise specified.
PARAMETER
CONDITIONS
ADS7805P, U
MIN
TYP
MAX
ADS7805PB, UB
MIN
TYP
MAX
UNITS
REFERENCE
Internal Reference Voltage
Int. Ref. Source Current (must use external buffer)
Internal Reference Drift
Ext. Ref. Voltage Range for Specified Linearity
External Reference Current Drain
Ext. 2.5000V Ref
2.48
2.5
2.52
2.48
2.5
2.52
V
1
1
µA
8
8
ppm/°C
2.3
2.5
2.7
2.3
2.5
2.7
V
100
100
µA
DIGITAL INPUTS
Logic Levels
V_IL
V_IH
I_IL
I_IH
DIGITAL OUTPUTS
Data Format
Data Coding
V_OL
V_OH
Leakage Current
Output Capacitance
–0.3
+2.0
I_SINK = 1.6mA
I_SOURCE = 500µA
+4
High-Z State, V_OUT = 0V to V_DIG
High-Z State
+0.8
V_D + 0.3V
±10
±10
–0.3
+2.0
Parallel 16 Bits
Binary Two’s Complement
+0.4
+4
±5
15
+0.8
V
V_D + 0.3V
V
±10
µA
±10
µA
+0.4
V
V
±5
µA
15
pF
DIGITAL TIMING
Bus Access Time
Bus Relinquish Time
83
83
ns
83
83
ns
POWER SUPPLIES
Specified Performance
V_DIG
V_ANA
I_DIG
I_ANA
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Operating Temperature⁽⁸⁾
Derated Performance
Storage
Thermal Resistance (θ_JA)
DIP-28
SO-28
Must be ≤ V_ANA
f_S = 100kHz
+4.75
+5
+5.25
+4.75
+5
+5.25
V
+4.75
+5
+5.25
+4.75
+5
+5.25
V
0.3
0.3
mA
16
16
mA
100
100
mW
–25
+85
–25
+85
°C
–40
+85
–40
+85
°C
–55
+125
–55
+125
°C
–65
+150
–65
+150
°C
75
75
°C/W
75
75
°C/W
NOTES: (1) LSB means Least Significant Bit. For the 16-bit, ±10V input ADS7805, one LSB is 305µV.
(2) Typical rms noise at worst case transitions and temperatures.
(3) As measured with fixed resistors, see Figure 4. Adjustable to zero with external potentiometer.
(4) Full-scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the
transition voltage (not divided by the full-scale range) and includes the effect of offset error.
(5) All specifications in dB are referred to a full-scale ±10V input.
(6) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB, or 10 bits of accuracy.
(7) Recovers to specified performance after 2 • FS input overvoltage.
(8) Functionality test at –40°C.
ADS7805
3
SBAS020D
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