參數(shù)資料
型號: AD7323BRUZ
廠商: Analog Devices Inc
文件頁數(shù): 10/37頁
文件大?。?/td> 0K
描述: IC ADC 12BIT+ SAR 4CHAN 16TSSOP
標準包裝: 96
位數(shù): 12
采樣率(每秒): 500k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉換器數(shù)目: 1
功率耗散(最大): 17mW
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 16-TSSOP
包裝: 管件
輸入數(shù)目和類型: 4 個單端,單極;4 個單端,雙極;2 個差分,單極;2 個差分,雙極
產(chǎn)品目錄頁面: 777 (CN2011-ZH PDF)
配用: EVAL-AD7323CBZ-ND - BOARD EVALUATION FOR AD7323CBZ
Data Sheet
AD7323
Rev. B | Page 17 of 36
Figure 25 shows the differential configuration during the
acquisition phase. For the conversion phase, SW3 opens and
SW1 and SW2 move to Position B (see Figure 26). The output
impedances of the source driving the VIN+ and VIN inputs
must match; otherwise, the two inputs have different settling
times, resulting in errors.
05400-
019
CAPACITIVE
DAC
CONTROL
LOGIC
CAPACITIVE
DAC
COMPARATOR
SW3
SW1
A
B
CS
VIN+
SW2
A
B
VIN
VREF
NOTES
1. VIN+ CAN BE VIN0 OR VIN2, AND VIN– CAN BE VIN1 OR VIN3.
Figure 25. ADC Differential Configuration During Acquisition Phase
CAPACITIVE
DAC
CONTROL
LOGIC
CAPACITIVE
DAC
COMPARATOR
SW3
SW1
A
B
CS
VIN+
SW2
A
B
VIN
VREF
05400-
020
NOTES
1. VIN+ CAN BE VIN0 OR VIN2, AND VIN– CAN BE VIN1 OR VIN3.
Figure 26. ADC Differential Configuration During Conversion Phase
Output Coding
The AD7323 default output coding is set to twos complement.
The output coding is controlled by the coding bit in the control
register. To change the output coding to straight binary coding,
the coding bit in the control register must be set. When operat-
ing in sequence mode, the output coding for each channel in
the sequence is the value written to the coding bit during the
last write to the control register.
Transfer Functions
The designed code transitions occur at successive integer
LSB values (that is, 1 LSB, 2 LSB, and so on). The LSB size is
dependent on the analog input range selected.
Table 7. LSB Sizes for Each Analog Input Range
Input Range
Full-Scale Range/8192 Codes
LSB Size
±10 V
20 V
2.441 mV
±5 V
10 V
1.22 mV
±2.5 V
5 V
0.61 mV
0 V to +10 V
10 V
1.22 mV
The ideal transfer characteristic for the AD7323 when twos
complement coding is selected is shown in Figure 27. The ideal
transfer characteristic for the AD7323 when straight binary
coding is selected is shown in Figure 28.
011...111
011...110
000...001
000...000
111...111
–FSR/2 + 1LSB
AGND + 1LSB
+FSR/2 – 1LSB BIPOLAR RANGES
+FSR – 1LSB
UNIPOLAR RANGE
AGND – 1LSB
ANALOG INPUT
ADC
CO
DE
100...010
100...001
100...000
05400-
021
Figure 27. Twos Complement Transfer Characteristic
111...111
111...110
111...000
011...111
–FSR/2 + 1LSB
AGND + 1LSB
+FSR/2 – 1LSB BIPOLAR RANGES
+FSR – 1LSB
UNIPOLAR RANGE
ANALOG INPUT
ADC
CO
DE
000...010
000...001
000...000
05400-
022
Figure 28. Straight Binary Transfer Characteristic
ANALOG INPUT STRUCTURE
The analog inputs of the AD7323 can be configured as single-
ended, true differential, or pseudo differential via the control
register mode bits (see Table 9). The AD7323 can accept true
bipolar input signals. On power-up, the analog inputs operate as
four single-ended analog input channels. If true differential or
pseudo differential is required, a write to the control register is
necessary after power-up to change this configuration.
Figure 29 shows the equivalent analog input circuit of the
AD7323 in single-ended mode. Figure 30 shows the equivalent
analog input structure in differential mode. The two diodes
provide ESD protection for the analog inputs.
D
VDD
C2
R1
VINx
VSS
C1
05400-
023
Figure 29. Equivalent Analog Input Circuit (Single-Ended)
相關PDF資料
PDF描述
CMP402GSZ-REEL IC COMPARATOR LV 65NS 16SOIC
AD7812YRUZ IC ADC 10BIT 8-CHAN SRL 20-TSSOP
VI-24B-IX-B1 CONVERTER MOD DC/DC 95V 75W
VI-244-IX-B1 CONVERTER MOD DC/DC 48V 75W
AD7812YRZ IC ADC 10BIT 8-CHAN SRL 20-SOIC
相關代理商/技術參數(shù)
參數(shù)描述
AD7323BRUZ-REEL 功能描述:IC ADC 12BIT+SAR 4CHAN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極
AD7323BRUZ-REEL7 功能描述:IC ADC 12BIT+ SAR 4CHAN 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極
AD7324 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
AD7324BRUZ 功能描述:IC ADC 12BIT+ SAR 4CHAN 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉換器數(shù)目:2 功率耗散(最大):155mW 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 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端,單極;2 個差分,單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7324BRUZ-REEL 功能描述:IC ADC 12BIT+SAR 4CHAN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端,單極