ADS7811_15 Datasheet, PDF (3/15 Pages) Texas Instruments – 16-Bit 250kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER

ELECTRICAL CHARACTERISTICS
At T_A = –25°C to +85°C, f_S = 250kHz, +V_S = +5V, and –V_S = –5V, using internal reference, unless otherwise specified.
ADS7811U
PARAMETER
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Capacitance
THROUGHPUT SPEED
Conversion Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
No Missing Codes
Transition Noise⁽²⁾
Full-Scale Error⁽³⁾
Full-Scale Error Drift
Full-Scale Error⁽³⁾
Full-Scale Error Drift
Bipolar Zero Error
Bipolar Zero Error Drift
Power-Supply Sensitivity
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Usable Bandwidth⁽⁵⁾
Aperture Delay
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
Internal Reference Drift
External Reference Voltage Range
External Reference Current Drain
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
DIGITAL TIMING
Bus Access Time
Bus Relinquish Time
POWER SUPPLIES
+V_S
–V_S
+I_S
–I_S
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Storage
CONDITIONS
After Input Capacitor is Charged
Acquire and Convert
External 2.5000V Reference
External 2.5000V Reference
+V_S ±5%, –V_S ±5%
f_IN = 100kHz
f_IN = 100kHz
f_IN = 100kHz
–60dB Input
f_IN = 100kHz
V_REF = +2.5V
I_SINK = 1.6mA
I_SOURCE = 200µA
High-Z State,
V_OUT = 0V to V_DIG
High-Z State
MIN
TYP
MAX
16
±2.5V
100
30
4.0
250
±6
15
0.8
±0.5
±7
±0.2
2
±10
±2
±6
±16
96
100
–98
–94
82
87
28
82
87
1
40
2.48
2.5
2.52
1
15
2.5
100
–0.3
+2.8
+0.8
+V_S +0.3V
±10
±10
Parallel 16 bits
Binary Two’s Complement
+0.4
+4
±5
15
83
83
+4.75
–5.25
+5
+5.25
–5
–4.75
+30
–10
200
250
–25
+85
–55
+125
UNITS
Bits
V
MΩ
pF
µs
kHz
LSB⁽¹⁾
Bits
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
LSB
dB⁽⁴⁾
dB
dB
dB
dB
MHz
ns
V
µA
ppm/°C
V
µA
V
V
µA
µA
V
V
µA
pF
ns
ns
V
V
mA
mA
mW
°C
°C
NOTES: (1) LSB means Least Significant Bit. For the 16-bit, ±2.5V input ADS7811, one LSB is 76µV.
(2) Typical rms noise at worst case transitions and temperatures.
(3) 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.
(4) All specifications in dB are referred to a full-scale ±2.5V input.
(5) Usable Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy.
ADS7811
3
SBOS041A
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