AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF
參數(shù)資料
型號: AD7986BCPZ-RL7
廠商: Analog Devices Inc
文件頁數(shù): 22/28頁
文件大小: 0K
描述: IC ADC 18BIT 2MSPS SAR 20LFCSP
產(chǎn)品培訓(xùn)模塊: Motor Control
標準包裝: 1,500
位數(shù): 18
采樣率(每秒): 2M
數(shù)據(jù)接口: MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 34mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 20-LFCSP-VQ
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個差分,雙極
AD7986
Rev. B | Page 3 of 28
SPECIFICATIONS
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF = 4.096 V, TA = 40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
Conditions
Min
Typ
Max
Unit
RESOLUTION
18
Bits
ANALOG INPUT
Voltage Range
(IN+) (IN)
V
REF
+V
REF
V
Absolute Input Voltage
IN+, IN
0.1
V
REF + 0.1
V
Common-Mode Input Range
IN+, IN
V
REF × 0.475
V
REF × 0.5
V
REF × 0.525
V
Analog Input CMRR
f
IN = 500 kHz
100
Leakage Current at 25°C
Acquisition phase
250
nA
Input Impedance
See the Analog Inputs section
ACCURACY
No Missing Codes
18
Bits
Differential Linearity Error
0.95
±0.60
+1.50
LSB2
Integral Linearity Error
2.50
±1.00
+2.50
LSB2
Transition Noise
2.0
LSB2
Gain Error, T
MIN to TMAX
20
±2.4
+20
LSB2
Gain Error Temperature Drift
±0.5
ppm/°C
Zero Error, T
MIN to TMAX
0.8
+0.8
mV
Zero Temperature Drift
±0.3
ppm/°C
Power Supply Sensitivity
AVDD = 2.5 V ± 5%
±4
LSB2
THROUGHPUT
Conversion Rate
0
2.00
MSPS
Transient Response
Full-scale step
100
ns
AC ACCURACY
Dynamic Range
V
REF = 4.096 V, internal reference
95.5
96.5
V
REF = 5.0 V, external reference
97
98
Signal-to-Noise Ratio, SNR
f
IN = 20 kHz, VREF = 4.096 V, internal
reference
94.5
95.5
f
IN = 20 kHz, VREF = 5.0 V, external
reference
96.5
97.0
Spurious-Free Dynamic Range, SFDR
f
IN = 20 kHz
115
Total Harmonic Distortion4, THD
f
IN = 20 kHz, VREF = 4.096 V, internal
reference
113
f
IN = 20 kHz, VREF = 5.0 V, external
reference
114
Signal-to-(Noise + Distortion), SINAD
f
IN = 20 kHz, VREF = 4.096 V
94.5
95.5
SAMPLING DYNAMICS
3 dB Input Bandwidth
19
MHz
Aperture Delay
0.7
ns
1 All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
2 LSB means least significant bit. With the ±4.096 V input range, one LSB is 31.25 V.
3 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
4 Tested fully in production at f
IN = 1 kHz.
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