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參數(shù)資料
| 型號： | AD977CRS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converter |
| 中文描述： | 3-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大小： | 284K |
| 代理商： | AD977CRS |
–3–
REV. D
AD977/AD977A
A Grade
Min
B Grade
Typ
C Grade
Min
Parameter
Typ
Max
Min
Max
Typ
Max
Unit
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Sampling Capacitance
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise
2
Full-Scale Error
3, 4
Full-Scale Error Drift
Full-Scale Error
Ext. REF = 2.5 V
Full-Scale Error Drift
Ext. REF = 2.5 V
Bipolar Zero Error
3
Bipolar Ranges
Bipolar Zero Error Drift
Bipolar Ranges
Unipolar Zero Error
3
Unipolar Ranges
Unipolar Zero Error Drift
Unipolar Ranges
Recovery to Rated Accuracy
After Power-Down
5
2.2
μ
F to CAP
Power Supply Sensitivity
V
ANA
= V
DIG
= V
D
= 5 V
±
5%
AC ACCURACY
Spurious Free Dynamic Range
6
Total Harmonic Distortion
6
Signal-to-(Noise+Distortion)
6
–60 dB Input
Signal-to-Noise
6
Full Power Bandwidth
8
–3 dB Input Bandwidth
SAMPLING DYNAMICS
Aperture Delay
Transient Response, Full-Scale Step
Overvoltage Recovery
9
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
External Reference Voltage Range
for Specified Linearity
External Reference Current Drain
Ext. REF = 2.5 V
16
16
16
Bits
±
10 V, 0 V to 5 V, . . . (See Table II)
See Table II
40
40
40
pF
5
5
5
μ
s
kHz
200
200
200
±
3
+3
±
2.0
+1.75
±
3
±
2
15
1.0
LSB
1
LSB
Bits
LSB
%
ppm/
°
C
–2
15
–1
16
1.0
1.0
±
0.5
±
0.25
±
0.5
±
7
±
7
±
7
±
0.5
±
0.25
±
0.5
%
±
2
±
2
±
2
ppm/
°
C
±
10
±
10
±
15
mV
±
2
±
2
±
2
ppm/
°
C
±
10
±
10
±
10
mV
±
2
±
2
±
2
ppm/
°
C
1
1
1
ms
±
8
±
8
±
8
LSB
90
96
90
dB
7
dB
dB
dB
dB
MHz
MHz
–90
–96
–90
83
85
83
27
28
27
83
85
83
1
2.7
1
2.7
1
2.7
40
40
40
ns
μ
s
ns
1
1
1
150
150
150
2.48
2.5
1
2.52
2.48
2.5
1
2.52
2.48
2.5
1
2.52
V
μ
A
2.3
2.5
2.7
2.3
2.5
2.7
2.3
2.5
2.7
V
1.2
1.2
1.2
mA
NOTES
1
LSB means Least Significant Bit. With a
±
10 V input, one LSB is 305
μ
V.
2
Typical rms noise at worst case transitions and temperatures.
3
Measured with fixed resistors as shown in Figures 11, 12 and 13. Adjustable to zero. Tested at room temperature.
4
Full-Scale Error is expressed as the % difference between the actual full-scale code transition voltage and the ideal full scale transition voltage, and includes the effect of offset
error. For bipolar input ranges, the Full-Scale Error is the worst case of either the –Full Scale or +Full Scale code transition voltage errors. For unipolar input ranges, Full-Scale
Error is with respect to the +Full-Scale code transition voltage.
5
External 2.5 V reference connected to REF.
6
f
= 20 kHz, 0.5 dB down unless otherwise noted.
7
All specifications in dB are referred to a full scale
±
10 V input.
8
Full-Power Bandwidth is defined as full-scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60 dB, or 10 bits of accuracy.
9
Recovers to specified performance after a 2
×
F
S
input overvoltage.
Specifications subject to change without notice.
AD977A–SPECIFICATIONS
(–40 C to +85 C, F
S
= 200 kHz, V
DIG
= V
ANA
= 5 V, unless otherwise noted)
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