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參數(shù)資料
| 型號： | TDA8766G |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | ADC |
| 英文描述： | 10-bit high-speed 2.7 to 5.25 V analog-to-digital converter |
| 中文描述： | 1-CH 10-BIT RESISTANCE LADDER ADC, PARALLEL ACCESS, PQFP32 |
| 封裝： | 5 X 5 X 1.40 MM, PLASTIC, LQFP-32 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 175K |
| 代理商： | TDA8766G |
1996 Mar 20
8
Philips Semiconductors
Product specification
10-bit high-speed 2.7 to 5.25 V
analog-to-digital converter
TDA8766
Notes
1.
In addition to a good layout of the digital and analog ground, it is recommended that the rise and fall times of the clock
must not be less than 1 ns.
Analog input voltages producing code 0 up to and including 1023:
a) V
osB
(voltage offset BOTTOM) is the difference between the analog input which produces data equal to 00 and
the reference voltage BOTTOM (V
RB
) at T
amb
= 25
°
C.
b) V
osT
(voltage offset TOP) is the difference between V
RT
(reference voltage TOP) and the analog input which
produces data outputs equal to 1023 at T
amb
= 25
°
C.
In order to ensure the optimum linearity performance of such converter architecture the lower and upper extremities
of the converter reference resistor ladder (corresponding to output codes 0 and 1023 respectively) are connected to
pins V
RB
and V
RT
via offset resistors R
OB
and R
OT
as shown in Fig.3.
2.
3.
a) The current flowing into the resistor ladder is I
L
=
and the full-scale input range at the converter,
to cover code 0 to code 1023, is
b) Since R
L
, R
OB
and R
OT
have similar behaviour with respect to process and temperature variation, the ratio
R
R
OB
R
L
R
OT
+
+
will be kept reasonably constant from part to part. Consequently variation of the output codes
at a given input voltage depends mainly on the difference V
RT
V
RB
and its variation with temperature and supply
voltage. When several ADCs are connected in parallel and fed with the same reference source, the matching
between each of them is then optimized.
E
FFECTIVE BITS
; see Fig.9; note 5
EB
effective bits
f
clk
= 20 MHz
f
i
= 300 kHz
f
i
= 1 MHz
f
i
= 3.58 MHz
9.5
9.3
8.0
bits
bits
bits
Timing (f
clk
= 20 MHz; C
L
= 20 pF);
see Fig.4; note 6
t
ds
t
h
t
d
sampling delay time
output hold time
output delay time
5
8
8
8
12
17
21
5
15
20
24
ns
ns
ns
ns
ns
V
DDO
= 4.75 V
V
DDO
= 3.15 V
V
DDO
= 2.7 V
3-state output delay times;
see Fig.5
t
dZH
t
dZL
t
dHZ
t
dLZ
enable HIGH
enable LOW
disable HIGH
disable LOW
14
16
16
14
18
20
20
18
ns
ns
ns
ns
Standby mode output delay times
t
dSTBLH
t
dSTBHL
standby (LOW-to-HIGH transition)
start-up (HIGH-to-LOW transition)
200
500
ns
ns
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
V
+
R
OB
R
L
R
L
R
OT
+
-----------------------------------------
V
I
R
L
I
L
×
OB
R
OT
+
+
R
V
RT
V
RB
–
(
)
0.871
V
RT
V
RB
–
(
)
×
=
×
=
=
-----------------------------------------
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8766G/C1,118 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10BIT ADC 2.7V RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TDA8766G/C1,151 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 BIT 3V A/D CONVERTER RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TDA8766G/C1118 | 制造商:NXP Semiconductors 功能描述: |
| TDA8766G/C2,118 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC TDA8766G/LQFP32/REEL13//C2 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TDA8766G/C2/S1,118 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC TDA8766G/LQFP32/REEL13//C2/S1 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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