参数资料
型号: TLC320AC02IPM
厂商: TEXAS INSTRUMENTS INC
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP64
封装: GREEN, PLASTIC, QFP-64
文件页数: 38/86页
文件大小: 471K
代理商: TLC320AC02IPM
3–5
3.5.7
Noise, Low-Pass and Band-Pass Switched-Capacitor Filters Included,
VDD = 5 V (Unless Otherwise Noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC idle channel noise
Inputs tied to ADC VMID,
f
8 kHz
FCLK
144 kHz
180
300
ADC idle-channel noise
fs = 8 kHz, FCLK = 144 kHz,
(see Note 11)
180
300
DAC idle channel
Broad-band noise
DIN INPUT = 00000000000000,
180
300
Vrms
DAC idle-channel
noise
Noise (0 to 7.2 kHz)
DIN INPUT
00000000000000,
fs = 8 kHz, FCLK = 144 kHz,
(N
)
180
300
noise
Noise (0 to 3.6 kHz)
(see Note 12)
180
300
All typical values are at VDD = 5 V and TA = 25°C.
NOTES: 11. The ADC channel noise is calculated by taking the RMS value of the digital output codes of the ADC
channel and converting to microvolts.
12. The DAC channel noise is measured differentially from OUT + to OUT – across 600
.
3.5.8
Absolute Gain Error, VDD = 5 V, fs = 8 kHz (Unless Otherwise Noted)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
ADC channel absolute gain error (see Note 13)
– 1-dB input signal
TA = –40 – 85°C
±1
DAC channel absolute gain error (see Note 14)
0-dB input signal,
RL = 600
TA = –40 – 85°C
±1
dB
NOTES: 13. ADC absolute gain error is the variation in gain from the ideal gain over the specified input signal levels.
The gain is measured with a – 1-dB, 1020-Hz sine wave. The – 1-dB input signal allows for any positive gain
or offset error that may affect gain measurements at or close to 0-dB input signal levels.
14. The DAC input signal is the digital equivalent of a 1020-Hz sine wave (full-scale analog output at digital full-
scale input = 0 dB). The nominal differential DAC channel output voltage with this input condition is 6 V peak
to peak. The load impedance for the DAC output buffer is 600
from OUT+ to OUT–.
3.5.9
Relative Gain and Dynamic Range, VDD = 5 V, fs = 8 kHz (Unless Otherwise
Noted)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
ADC channel relative gain tracking error
(see Note 15)
– 48-dB to – 1-dB input signal range
±0.2
dB
DAC channel relative gain tracking error
(see Note 16)
– 48-dB to 0-dB input signal range
RL(diff) = 600
±0.2
dB
NOTES: 15. ADC gain tracking is the ratio of the measured gain at one ADC channel input level to the gain measured
at any other input level. The ADC channel input is a –1-dB 1020-Hz sine wave input signal. A –1-dB input
signal allows for any positive gain or offset error that may affect gain measurements at or close to 0-dB ADC
input signal levels.
16. DAC gain tracking is the ratio of the measured gain at one DAC channel digital input level to the gain
measured at any other input level. The DAC-channel input signal is the digital equivalent of a 1020-Hz sine
wave (digital full scale = 0 dB). The nominal differential DAC channel output voltage with this input condition
is 6 V peak to peak. The load impedance for the DAC output buffer is 600
from OUT+ to OUT–.
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