參數(shù)資料
型號(hào)： ADS7815U/1KE4
廠商： Texas Instruments
文件頁(yè)數(shù)： 10/16頁(yè)
文件大小： 0K
描述： IC 16BIT 250KHZ ADC CONV 28-SOIC
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 1,000
位數(shù)： 16
采樣率（每秒）： 250k
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 250mW
電壓電源： 雙 ±
工作溫度： -25°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 28-SOIC
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 1 個(gè)單端，雙極
ADS7815
3
SBAS065B
www.ti.com
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
±2.5V
V
Impedance
100
M
Capacitance
30
pF
THROUGHPUT SPEED
Conversion Cycle
Acquire and Convert
4.0
s
Throughput Rate
250
kHz
DC ACCURACY
Integral Linearity Error
±4
LSB(1)
No Missing Codes
15
Bits
Transition Noise(2)
0.8
LSB
Full Scale Error(3)
±0.1
%
Full Scale Error Drift
±7
ppm/
°C
Bipolar Zero Error
±2mV
Bipolar Zero Error Drift
±2
ppm/
°C
Power Supply Sensitivity
+VS ±5%, –VS ±5%
±6LSB
AC ACCURACY
Spurious-Free Dynamic Range
fIN = 100kHz
96
100
dB(4)
Total Harmonic Distortion
fIN = 100kHz
–98
–94
dB
Signal-to-(Noise+Distortion)
fIN = 100kHz
82
dB
–60dB Input
28
dB
Signal-to-Noise
fIN = 100kHz
82
dB
Usable Bandwidth(5)
1MHz
Aperture Delay
40
ns
REFERENCE
Internal Reference Voltage
2.45
2.5
2.55
V
Internal Reference Source Current
1
A
External Reference Voltage Range
2.3
2.5
2.7
V
External Reference Current Drain
VREF = +2.5V
100
A
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
V
VIH
+2.8
+VS +0.3V
V
IIL
±10
A
IIH
±10
A
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
ISINK = 1.6mA
+0.4
V
VOH
ISOURCE = 200A+4
V
Leakage Current
High-Z State,
±5
A
VOUT = 0V to VDIG
Output Capacitance
High-Z State
15
pF
DIGITAL TIMING
Bus Access Time
83
ns
Bus Relinquish Time
83
ns
POWER SUPPLIES
+VS
+4.75
+5
+5.25
V
–VS
–5.25
–5
–4.75
V
+IS
+30
mA
–IS
–10
mA
Power Dissipation
200
250
mW
TEMPERATURE RANGE
Specified Performance
–25
+85
°C
Storage
–55
+125
°C
NOTES: (1) LSB means Least Significant Bit. For the 16-bit,
±2.5V input ADS7815, one LSB is 76V.
(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) Full-Power Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise+Distortion) degrades to 60dB, or 10 bits of accuracy.
ELECTRICAL CHARACTERISTICS
At TA = –25°C to +85°C, fS = 250kHz, +VS = +5V, and –VS = –5V, using internal reference, unless otherwise specified.
ADS7815U
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Parallel 16 bits
Binary Two’s Complement
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