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ADS7841 Datasheet, PDF (3/14 Pages) Burr-Brown (TI) – 12-Bit, 4-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
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SPECIFICATION: +2.7V
At TA = –40°C to +85°C, +VCC = +2.7V, VREF = +2.5V, fSAMPLE = 125kHz, and fCLK = 16 • fSAMPLE = 2MHz, unless otherwise noted.
ADS7841E, P
PARAMETER
CONDITIONS
MIN
TYP
MAX
ANALOG INPUT
Full-Scale Input Span
Absolute Input Range
Capacitance
Leakage Current
SYSTEM PERFORMANCE
Resolution
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
Power Supply Rejection
SAMPLING DYNAMICS
Conversion Time
Acquisition Time
Throughput Rate
Multiplexer Settling Time
Aperture Delay
Aperture Jitter
DYNAMIC CHARACTERISTICS
Total Harmonic Distortion(2)
Signal-to-(Noise + Distortion)
Spurious Free Dynamic Range
Channel-to-Channel Isolation
REFERENCE INPUT
Range
Resistance
Input Current
DIGITAL INPUT/OUTPUT
Logic Family
Logic Levels
VIH
VIL
VOH
VOL
Data Format
POWER SUPPLY REQUIREMENTS
+VCC
Quiescent Current
Power Dissipation
TEMPERATURE RANGE
Specified Performance
Positive Input - Negative Input
0
Positive Input
–0.2
Negative Input
–0.2
VREF
+VCC +0.2
+0.2
25
±1
12
12
±2
±0.8
±3
0.15
1.0
±4
0.1
1.0
30
70
12
3
125
500
30
100
VIN = 2.5Vp-p at 10kHz
VIN = 2.5Vp-p at 10kHz
VIN = 2.5Vp-p at 10kHz
VIN = 2.5Vp-p at 50kHz
DCLK Static
fSAMPLE = 12.5kHz
DCLK Static
–77
–72
68
71
72
78
100
0.1
+VCC
5
13
40
2.5
0.001
3
| IIH | ≤ +5µA
| IIL | ≤ +5µA
IOH = –250µA
IOL = 250µA
CMOS
+VCC • 0.7
–0.3
+VCC • 0.8
Straight Binary
5.5
+0.8
0.4
Specified Performance
2.7
3.6
280
650
fSAMPLE = 12.5kHz
Power-Down Mode(3), CS = +VCC
220
3
1.8
–40
+85
ADS7841EB, PB
MIN
TYP
MAX
T
T
T
T
T
T
T
T
T
12
±1
±0.5
±1
T
T
T
±3
T
T
T
T
T
T
T
T
T
T
–79
–76
70
72
76
80
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
UNITS
V
V
V
pF
µA
Bits
Bits
LSB(1)
LSB
LSB
LSB
LSB
LSB
µVrms
dB
Clk Cycles
Clk Cycles
kHz
ns
ns
ps
dB
dB
dB
dB
V
GΩ
µA
µA
µA
V
V
V
V
V
µA
µA
µA
mW
°C
T Same specifications as ADS7841E, P.
NOTE: (1) LSB means Least Significant Bit. With VREF equal to +2.5V, one LSB is 610mV. (2) First five harmonics of the test frequency. (3) Auto power-down mode
(PD1 = PD0 = 0) active or SHDN = GND.
®
3
ADS7841
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