參數(shù)資料
型號： TLC3548IPWRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24
封裝： GREEN, PLASTIC, TSSOP-24
文件頁數(shù)： 11/44頁
文件大?。?/td> 1000K
代理商： TLC3548IPWRG4
TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C – OCTOBER 2000 – REVISED MAY 2003
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
Table 2. Configuration Register (CFR) Bit Definition
SDI BIT
DEFINITION
D11
Reference select:
0: Internal (4 V)
1: External
D10
Conversion output code format select:
0: USB (unipolar straight binary)
1: Binary 2s complement
D9
Sample period select for normal sampling
0: Long sampling (4X) 44 SCLKs
Don’t care in extended sampling.
1: Short sampling (1X) 12 SCLKs
D8
Conversion clock source select:
0: Conversion clock = Internal OSC
1: Conversion clock = SCLK/4
D7
Input mode select:
0: Single-ended
1: Pseudodifferential. Pin configuration shown below.
Pin Configuration of TLC3548
Pin Configuration of TLC3544
Pin No.
Single-ended
Pseudodifferential polarity
Pin No.
Single-ended
Pseudodifferential polarity
9
10
A0
A1
PLUS
MINUS
Pair A
9
10
A0
A1
PLUS
MINUS
Pair A
11
12
A2
A3
PLUS
MINUS
Pair B
11
12
A2
A3
PLUS
MINUS
Pair B
13
14
A4
A5
PLUS
MINUS
Pair C
15
16
A6
A7
PLUS
MINUS
Pair D
D[6:5]
Conversion mode select:
00: One shot mode
01: Repeat mode
10: Sweep mode
11: Repeat sweep mode
D[4:3]
Sweep auto sequence select (Note: These bits only take effect in conversion mode 10 and 11.)
[]
TLC3548
TLC3544
Single ended(by ch)
Pseudodifferential (by pair)
Single ended (by ch)
Pseudodifferential (by pair)
00: 0–1–2–3–4–5–6–7
01: 0–2–4–6–0–2–4–6
10: 0–0–2–2–4–4–6–6
11: 0–2–0–2–0–2–0–2
00:
N/A
01: A–B–C–D–A–B–C–D
10: A–A–B–B–C–C–D–D
11: A–B–A–B–A–B–A–B
00: 0–1–2–3–0–1–2–3
01: 0–2–0–2–0–2–0–2
10: 0–0–1–1–2–2–3–3
11: 0–0–0–0–2–2–2–2
00:
N/A
01: A–B–A–B–A–B–A–B
10:
N/A
11: A–A–A–A–B–B–B–B
D2
EOC/INT pin function select:
0: Pin used as INT
1: Pin used as EOC ( for mode 00 only)
D[1:0]
FIFO trigger level (sweep sequence length). Don’t care in one shot mode.
00: Full (INT generated after FIFO level 7 filled)
01: 3/4 (INT generated after FIFO level 5 filled)
10: 1/2 (INT generated after FIFO level 3 filled)
11: 1/4 (INT generated after FIFO level 1 filled)
sampling period
The sampling period follows the command period. The selected signal is sampled during this time. The device
has three different sampling modes: normal short mode, normal long mode, and extended mode.
Normal Short Sampling Mode: Sampling time is controlled by SCLK. It takes 12 SCLK periods. At the end of
sampling, the converter automatically starts the conversion period. After configuration, normal sampling, except
FIFO READ and WRITE CFR commands, starts automatically after the fourth falling edge of SCLK that follows
the falling edge of CS if CS triggers the operation, or follows the rising edge of FS if FS initiates the operation.
相關(guān)PDF資料
PDF描述
TLC3544CPWG4 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLC3544IDWG4 4-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
TLC3548IPWG4 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24
TLC3548IDWR 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24
TLC3548IDWG4 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24
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