MIN
參數(shù)資料
型號: ADS7864YB/2KG4
廠商: Texas Instruments
文件頁數(shù): 22/27頁
文件大?。?/td> 0K
描述: IC 12BIT 500KHZ 6CH ADC 48-TQFP
產(chǎn)品培訓(xùn)模塊: Data Converter Basics
標準包裝: 2,000
位數(shù): 12
采樣率(每秒): 500k
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 50mW
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: 48-TQFP
供應(yīng)商設(shè)備封裝: 48-TQFP(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 12 個單端,雙極;6 個差分,雙極
配用: 296-30697-ND - EVAL MODULE FOR ADS7864M
www.ti.com
ELECTRICAL CHARACTERISTICS
ADS7864
SBAS141A – SEPTEMBER 2000 – REVISED MARCH 2005
All specifications T
MIN to TMAX, +VA = +VD = +5V, VREF = internal +2.5V and fCLK = 8MHz, fSAMPLE = 500kHz (unless otherwise
noted).
ADS7864Y
ADS7864YB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Resolution
12
Bits
Analog Input
Input Voltage Range-Bipolar
VCENTER = +2.5V
–VREF
+VREF
–VREF
+VREF
V
Absolute Input Range
+IN
–0.3
+VA + 0.3
V
–IN
–0.3
+VA + 0.3
V
Input Capacitance
15
pF
Input Leakage Current
CLK = GND
±1
A
System Performance
No Missing Codes
12
Bits
Integral Linearity
±0.75
2
±0.5
±1
LSB
Integral Linearity Match
0.5
LSB
Differential Linearity
–0.9
±0.6
–0.9
±0.4
LSB
Bipolar Offset Error
Referenced to REFIN
±0.75
±4
±0.5
±3
LSB
Bipolar Offset Error Match
3
LSB
Positive Gain Error
Referenced to REFIN
±0.15
±0.75
±0.1
±0.5
% of FSR
Positive Gain Error Match
3
LSB
Negative Gain Error
Referenced to REFIN
±0.15
±0.75
±0.1
±0.5
% of FSR
Negative Gain Error Match
3
LSB
Common-Mode Rejection Ratio
At DC
84
dB
VIN = ±1.25VPP at 50kHz
80
dB
Noise
120
VRMS
Power Supply Rejection Ratio
0.3
2
0.3
2
LSB
Sampling Dynamics
Conversion Time per A/D
1.75
s
Acquisition Time
0.25
s
Throughput Rate
500
kHz
Aperture Delay
3.5
ns
Aperture Delay Matching
100
ps
Aperture Jitter
50
ps
Small-Signal Bandwidth
40
MHz
Dynamic Characteristics
Total Harmonic Distortion
VIN = ±2.5VPP at 100kHz
–75
dB
SINAD
VIN = ±2.5VPP at 100kHz
71
dB
Spurious Free Dynamic Range
VIN = ±2.5VPP at 100kHz
78
dB
Channel-to-Channel Isolation
VIN = ±2.5VPP at 50kHz
–76
dB
Voltage Reference
Internal Reference Voltage
2.475
2.5
2.525
2.475
2.5
2.525
V
Internal Drift
10
ppm/°C
Internal Noise
50
VPP
Internal Source Current
2
mA
Internal Load Rejection
0.005
mV/A
Internal PSRR
80
dB
External Reference Voltage Range
1.2
2.5
2.6
1.2
2.5
2.6
V
Input Current
100
A
Input Capacitance
5
pF
4
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