参数资料
型号: DC746A
厂商: Linear Technology
文件页数: 34/36页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2412
软件下载: QuikEval System
设计资源: DC746A Design File
DC746A Schematic
标准包装: 1
系列: QuikEval™
ADC 的数量: 1
位数: 24
采样率(每秒): 7.5
数据接口: MICROWIRE?,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2412
已供物品:
相关产品: DC590B-ND - BOARD DEMO USB SERIAL CONTROLLER
LTC2412IGN#PBF-ND - IC ADC 2CH DIFF-IN 24BIT 16SSOP
LTC2412IGN#TRPBF-ND - IC ADC 2CH DIFF-IN 24BIT 16SSOP
LTC2412CGN#TRPBF-ND - IC ADC 2CH DIFF-IN 24BIT 16SSOP
LTC2412CGN#PBF-ND - IC ADC 2CH DIFF-IN 24BIT 16SSOP
LTC2412IGN#TR-ND - IC CONV A/D 24B 2CH DIFF 16-SSOP
LTC2412CGN#TR-ND - IC CONV A/D 24B 2CH DIFF 16-SSOP
LTC2412IGN-ND - IC CONV A/D 24B 2CH DIFF 16-SSOP
LTC2412CGN-ND - IC ADC 2CH DIFF-IN 24BIT 16SSOP
LTC2412
7
2412f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
OUTPUT CODE (ppm OF VREF)
–1.6
–0.8
0
0.8
1.6
NUMBER
OF
READINGS
(%)
2412 G10
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = GND
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.033ppm
σ = 0.293ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
NUMBER
OF
READINGS
(%)
2410 G11
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = 460800Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.014ppm
σ = 0.292ppm
OUTPUT CODE (ppm OF VREF)
–5.5 –5.1 –4.7 –4.3 –3.9 –3.5 –3.1 –2.7 –2.3
NUMBER
OF
READINGS
(%)
2412 G12
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = 1075200Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 3.852ppm
σ = 0.326ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
NUMBER
OF
READINGS
(%)
2412 G13
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = GND
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.079ppm
σ = 0.298ppm
OUTPUT CODE (ppm OF VREF)
–1.6 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
NUMBER
OF
READINGS
(%)
2412 G14
12
10
8
6
4
2
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = 460800Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 0.177ppm
σ = 0.297ppm
OUTPUT CODE (ppm OF VREF)
–10 –8.5 –7 –5.5 –4 –2.5 –1
0.5
2
NUMBER
OF
READINGS
(%)
2412 G15
10
9
8
7
6
5
4
3
2
1
0
10,000 CONSECUTIVE
READINGS
VCC = 2.7V
VREF = 2.5V
VIN = 0V
REF + = 2.5V
REF = GND
IN+ = 1.25V
IN= 1.25V
FO = 1075200Hz
TA = 25°C
GAUSSIAN
DISTRIBUTION
m = 3.714ppm
σ = 1.295ppm
OUTPUT CODE (ppm OF VREF)
–0.8 –0.6 –0.4 –0.2
0
0.2
0.4
0.6
0.8
NUMBER
OF
READINGS
(%)
2412 G16
12
10
8
6
4
2
0
ADC CONSECUTIVE
READINGS
VCC = 5V
VREF = 5V
VIN = 0V
REF + = 5V
REF = GND
IN+ = 2.5V
IN= 2.5V
FO = GND
TA = 25°C
GAUSSIAN DISTRIBUTION
m = 0.101837ppm
σ = 0.154515ppm
TIME (HOURS)
0
5 10 15 20 25 30 35 40 45 50 55 60
ADC
READING
(ppm
OF
V
REF
)
2412 G17
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
VCC = 5V
VREF = 5V
VIN = 0V
FO = GND
TA = 25°C
REF + = 5V
REF = GND
IN+ = 2.5V
IN= 2.5V
INPUT DIFFERENTIAL VOLTAGE (V)
–2.5 –2 –1.5 –1 –0.5 0
0.5
1
1.5
2
2.5
RMS
NOISE
(ppm
OF
V
REF
)
2412 G18
0.5
0.4
0.3
0.2
0.1
0
VCC = 5V
VREF = 5V
REF + = 5V
REF = GND
VINCM = 2.5V
FO = GND
TA = 25°C
Noise Histogram (Output Rate =
52.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
22.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
7.5Hz, VCC = 5V, VREF = 2.5V)
Noise Histogram (Output Rate =
52.5Hz, VCC = 2.7V, VREF = 2.5V)
Noise Histogram (Output Rate =
22.5Hz, VCC = 2.7V, VREF = 2.5V)
Noise Histogram (Output Rate =
7.5Hz, VCC = 2.7V, VREF = 2.5V)
RMS Noise
vs Input Differential Voltage
Consecutive ADC Readings
vs Time
Long-Term Noise Histogram
(Time = 60 Hrs, VCC = 5V,
VREF = 5V)
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